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Father's Day ❤️

Diamond deal Costco

There are 4 new Diamond deals available in the Costco weekly ad from 06/18/2026.

Stores 1
Costco
ShopRite
Kroger
Kohl's
Albertsons
Meijer
JC Penney
Jewel-Osco
Vons
Stop&Shop
Bravo Supermarkets
Giant Eagle
Ralphs
ACME
Boscov's
Big Saver Foods
Ocean State Job Lot
Kings Food Markets
Menards
Runnings
C Town
SuperFresh
Cermak Fresh Market
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4 of 99 deals
Costco
Costco Oval 1.65 ctw VS2 Clarity, H Color Diamond Platinum Band offer

Oval 1.65 ctw VS2 Clarity, H Color Diamond Platinum Band

3 days
$2,899.99
Costco
Costco Round Brilliant 1.00 ct VS2 Clarity, I Color Diamond 14kt Gold Solitaire Pendant offer

Round Brilliant 1.00 ct VS2 Clarity, I Color Diamond 14kt Gold Solitaire Pendant

3 days
$4,299.99
Costco
Costco Round Brilliant 1.00 ctw VS2 Clarity, I Color Diamond 14kt Gold Stud Earrings offer

Round Brilliant 1.00 ctw VS2 Clarity, I Color Diamond 14kt Gold Stud Earrings

3 days
$1,899.99
Costco
Costco Princess Cut & Round Brilliant 2.00 ctw VS2 Clarity, G Color Diamond Platinum Halo Ring offer

Princess Cut & Round Brilliant 2.00 ctw VS2 Clarity, G Color Diamond Platinum Halo Ring

3 days
$6,999.97

Related brands

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Diamond logo
Diamond
Dove logo
Dove
Kellogg's logo
Kellogg's
Candy logo
Candy
Big logo
Big
Sun logo
Sun

Stores with Diamond in their assortment

JC Penney

JC Penney

Runnings

Runnings

Costco

Costco

Albertsons

Albertsons

Boscov's

Boscov's

Stop&Shop

Stop&Shop

Ocean State Job Lot

Ocean State Job Lot

ShopRite

ShopRite

Menards

Menards

C Town

C Town

Meijer

Meijer

Jewel-Osco

Jewel-Osco

Kings Food Markets

Kings Food Markets

Kohl's

Kohl's

Vons

Vons

Bravo Supermarkets

Bravo Supermarkets

ACME

ACME

Kroger

Kroger

Safeway

Safeway

Walmart

Walmart

Five Below

Five Below

Claire's

Claire's

Littman Jewelers

Littman Jewelers

Ace Hardware

Ace Hardware

Nearest Costco branch

This Diamond deal Costco is available in the following branches based on your set location:

New York
Automatically locate
Costco logo
Costco976 3rd ave 11232-2400 New York
6.60 km
Costco logo
Costco3250 vernon blvd 11106-4927 Long Island City NY
7.85 km
Costco logo
Costco517 e 117th st 10035-4409 Harlem NY
10.95 km
All locations

Diamond price Costco🕒

OfferNameStoreRegular priceDeal pricePromotionStart dateEnd date
Costco Oval 1.65 ctw VS2 Clarity, H Color Diamond Platinum Band offerOval 1.65 ctw VS2 Clarity, H Color Diamond Platinum BandCostco$2,899.9915 June 202621 June 2026
Costco Round Brilliant 1.00 ctw VS2 Clarity, I Color Diamond 14kt Gold Stud Earrings offerRound Brilliant 1.00 ctw VS2 Clarity, I Color Diamond 14kt Gold Stud EarringsCostco$1,899.9915 June 202621 June 2026
Costco Round Brilliant 1.00 ct VS2 Clarity, I Color Diamond 14kt Gold Solitaire Pendant offerRound Brilliant 1.00 ct VS2 Clarity, I Color Diamond 14kt Gold Solitaire PendantCostco$4,299.9915 June 202621 June 2026
Costco Princess Cut & Round Brilliant 2.00 ctw VS2 Clarity, G Color Diamond Platinum Halo Ring offerPrincess Cut & Round Brilliant 2.00 ctw VS2 Clarity, G Color Diamond Platinum Halo RingCostco$6,999.9715 June 202621 June 2026
Costco Princess Cut & Round Brilliant 2.00 ctw VS2 Clarity, G Color Diamond Platinum Halo Ring offerPrincess Cut & Round Brilliant 2.00 ctw VS2 Clarity, G Color Diamond Platinum Halo RingCostco$6,999.9708 June 202614 June 2026
Costco Round Brilliant 1.00 ctw VS2 Clarity, I Color Diamond 14kt Gold Hoop Earrings offerRound Brilliant 1.00 ctw VS2 Clarity, I Color Diamond 14kt Gold Hoop EarringsCostco$1,099.9901 June 202607 June 2026
Costco Emerald Cut & Round Brilliant 1.17 ctw VS2 Clarity, G Color Diamond Platinum Three Stone Ring offerEmerald Cut & Round Brilliant 1.17 ctw VS2 Clarity, G Color Diamond Platinum Three Stone RingCostco$2,799.9901 June 202607 June 2026
Costco Princess Cut & Round Brilliant 2.00 ctw VS2 Clarity, G Color Diamond Platinum Halo Ring offerPrincess Cut & Round Brilliant 2.00 ctw VS2 Clarity, G Color Diamond Platinum Halo RingCostco$6,999.9701 June 202607 June 2026
Costco Citizen Eco Drive Disney Mickey Mouse Diamond Gold Tone Stainless Steel Quartz Women's Watch, 29.5mm offerCitizen Eco Drive Disney Mickey Mouse Diamond Gold Tone Stainless Steel Quartz Women's Watch, 29.5mmCostco$299.9925 May 202631 May 2026
Costco Princess Cut & Round Brilliant 1.07 ctw VS2 Clarity, I Color Diamond 14kt White Gold Halo Ring offerPrincess Cut & Round Brilliant 1.07 ctw VS2 Clarity, I Color Diamond 14kt White Gold Halo RingCostco$2,299.9925 May 202631 May 2026
Costco Emerald Cut & Round Brilliant 1.17 ctw VS2 Clarity, G Color Diamond Platinum Three Stone Ring offerEmerald Cut & Round Brilliant 1.17 ctw VS2 Clarity, G Color Diamond Platinum Three Stone RingCostco$2,799.9925 May 202631 May 2026
Costco Round Brilliant 0.68 ctw VS2 Clarity, I Color Diamond 14kt Gold Multi Row Hoop Earrings offerRound Brilliant 0.68 ctw VS2 Clarity, I Color Diamond 14kt Gold Multi Row Hoop EarringsCostco$999.9925 May 202631 May 2026
Costco Round Brilliant 1.40 ctw VS2 Clarity, I Color Diamond Platinum Ring offerRound Brilliant 1.40 ctw VS2 Clarity, I Color Diamond Platinum RingCostco$2,999.9925 May 202631 May 2026
Costco Round Brilliant 10.00 ctw VS2 Clarity, I Color Diamond 18kt Yellow Gold Hoop Earrings offerRound Brilliant 10.00 ctw VS2 Clarity, I Color Diamond 18kt Yellow Gold Hoop EarringsCostco$17,999.9725 May 202631 May 2026
Costco Bulova Classic Stainless Steel Diamond Rectangle Blue Dial Women's Quartz Watch, 21mm offerBulova Classic Stainless Steel Diamond Rectangle Blue Dial Women's Quartz Watch, 21mmCostco$259.9925 May 202631 May 2026
Costco Round Brilliant 1.60 ctw VS2 Clarity, I Color Diamond 14kt Gold Stud Earrings offerRound Brilliant 1.60 ctw VS2 Clarity, I Color Diamond 14kt Gold Stud EarringsCostco$3,899.9925 May 202631 May 2026
Costco Princess Cut & Round Brilliant 2.00 ctw VS2 Clarity, G Color Diamond Platinum Halo Ring offerPrincess Cut & Round Brilliant 2.00 ctw VS2 Clarity, G Color Diamond Platinum Halo RingCostco$6,999.9718 May 202624 May 2026
Costco Mirador Diamond Series 205 Gallon Storage Box offerMirador Diamond Series 205 Gallon Storage BoxCostco$399.9918 May 202624 May 2026
Costco Round Brilliant 1.04 ctw VS2 Clarity, I Color Diamond 14kt White Gold Halo Ring offerRound Brilliant 1.04 ctw VS2 Clarity, I Color Diamond 14kt White Gold Halo RingCostco$1,898.72$1,499.99$398.73 Discount18 May 202624 May 2026
Costco Princess Cut & Round Brilliant 2.00 ctw VS2 Clarity, G Color Diamond Platinum Halo Ring offerPrincess Cut & Round Brilliant 2.00 ctw VS2 Clarity, G Color Diamond Platinum Halo RingCostco$6,999.9711 May 202617 May 2026
Costco Round Brilliant 1.80 ctw VS2 Clarity, I Color Diamond 14kt White Gold Cross Pendant offerRound Brilliant 1.80 ctw VS2 Clarity, I Color Diamond 14kt White Gold Cross PendantCostco$2,999.9711 May 202617 May 2026
Costco Round Brilliant 1.50 ctw VS2 Clarity, I Color Diamond 14kt Yellow Gold Three Stone Pendant offerRound Brilliant 1.50 ctw VS2 Clarity, I Color Diamond 14kt Yellow Gold Three Stone PendantCostco$3,999.9711 May 202617 May 2026
Costco Round Brilliant 1.00 ctw VS2 Clarity, G Color Diamond 14kt White Gold Cross Pendant offerRound Brilliant 1.00 ctw VS2 Clarity, G Color Diamond 14kt White Gold Cross PendantCostco$1,499.9904 May 202610 May 2026
Costco Cushion Cut 1.60 ctw VS2 Clarity, I Color Diamond Platinum Wedding Set offerCushion Cut 1.60 ctw VS2 Clarity, I Color Diamond Platinum Wedding SetCostco$4,499.9704 May 202610 May 2026
Costco 14kt Gold Diamond Cut Round Box Chain offer14kt Gold Diamond Cut Round Box ChainCostco$699.9904 May 202610 May 2026
Costco Round Brilliant 5.00 ctw VS2 Clarity, G Color Diamond 14kt Gold Strand Necklace offerRound Brilliant 5.00 ctw VS2 Clarity, G Color Diamond 14kt Gold Strand NecklaceCostco$5,999.9904 May 202610 May 2026
Costco Round Brilliant 0.23 ctw VS2 Clarity, I Color Diamond 14kt Gold Screwback Stud Earrings offerRound Brilliant 0.23 ctw VS2 Clarity, I Color Diamond 14kt Gold Screwback Stud EarringsCostco$289.9904 May 202610 May 2026
Costco Round Brilliant 2.00 ctw VS2 Clarity, G Color Diamond 14kt Gold Bangle Bracelet offerRound Brilliant 2.00 ctw VS2 Clarity, G Color Diamond 14kt Gold Bangle BraceletCostco$2,207.78$1,699.99$507.79 Discount04 May 202610 May 2026
Costco Princess Cut & Round Brilliant 2.00 ctw VS2 Clarity, G Color Diamond Platinum Halo Ring offerPrincess Cut & Round Brilliant 2.00 ctw VS2 Clarity, G Color Diamond Platinum Halo RingCostco$6,999.9704 May 202610 May 2026
Costco 14kt Two-Tone Gold Diamond Cut Crucifix on an 18-20 Chain offer14kt Two-Tone Gold Diamond Cut Crucifix on an 18-20 ChainCostco$419.9904 May 202610 May 2026
Costco Round Brilliant 0.50 ctw VS2 Clarity, I Color Diamond 14kt Gold Cross Pendant offerRound Brilliant 0.50 ctw VS2 Clarity, I Color Diamond 14kt Gold Cross PendantCostco$899.9904 May 202610 May 2026
Costco Round Brilliant 12.00 ctw VS2 Clarity, G Color Diamond 14kt White Gold Strand Necklace offerRound Brilliant 12.00 ctw VS2 Clarity, G Color Diamond 14kt White Gold Strand NecklaceCostco$13,999.9904 May 202610 May 2026
Costco Round Brilliant 1.00 ctw VS2 Clarity, I Color Diamond Eternity Band offerRound Brilliant 1.00 ctw VS2 Clarity, I Color Diamond Eternity BandCostco$1,099.9927 April 202603 May 2026
Costco Princess Cut & Round Brilliant 2.00 ctw VS2 Clarity, G Color Diamond Platinum Halo Ring offerPrincess Cut & Round Brilliant 2.00 ctw VS2 Clarity, G Color Diamond Platinum Halo RingCostco$6,999.9727 April 202603 May 2026
Costco Citizen Eco Drive Disney Mickey Mouse Diamond Gold Tone Stainless Steel Quartz Women's Watch, 29.5mm offerCitizen Eco Drive Disney Mickey Mouse Diamond Gold Tone Stainless Steel Quartz Women's Watch, 29.5mmCostco$299.9927 April 202603 May 2026
Costco Anji Mountain Woven Diamond Pouf offerAnji Mountain Woven Diamond PoufCostco$69.9920 April 202626 April 2026
Costco Princess Cut & Round Brilliant 2.00 ctw VS2 Clarity, G Color Diamond Platinum Halo Ring offerPrincess Cut & Round Brilliant 2.00 ctw VS2 Clarity, G Color Diamond Platinum Halo RingCostco$6,999.9720 April 202626 April 2026
Costco Multi Cut 3.82 ctw VS2 Clarity, I Color Diamond 18kt White Gold Cluster Earrings offerMulti Cut 3.82 ctw VS2 Clarity, I Color Diamond 18kt White Gold Cluster EarringsCostco$5,999.9920 April 202626 April 2026
Costco Round Brilliant 2.00 ctw VS2 Clarity, G Color Diamond 14kt Gold Bangle Bracelet offerRound Brilliant 2.00 ctw VS2 Clarity, G Color Diamond 14kt Gold Bangle BraceletCostco$2,199.9920 April 202626 April 2026
Costco Round Brilliant 1.00 ctw VS2 Clarity, I Color Diamond Eternity Band offerRound Brilliant 1.00 ctw VS2 Clarity, I Color Diamond Eternity BandCostco$1,099.9920 April 202626 April 2026
Costco Round Brilliant 2.00 ctw VS2 Clarity, I Color Diamond 14kt White Gold Halo Earrings offerRound Brilliant 2.00 ctw VS2 Clarity, I Color Diamond 14kt White Gold Halo EarringsCostco$3,797.46$2,999.99$797.47 Discount13 April 202619 April 2026
Costco Round Brilliant 2.00 ctw VS2 Clarity, G Color Diamond 14kt Gold Bangle Bracelet offerRound Brilliant 2.00 ctw VS2 Clarity, G Color Diamond 14kt Gold Bangle BraceletCostco$2,199.9913 April 202619 April 2026
Costco Princess Cut & Round Brilliant 2.00 ctw VS2 Clarity, G Color Diamond Platinum Halo Ring offerPrincess Cut & Round Brilliant 2.00 ctw VS2 Clarity, G Color Diamond Platinum Halo RingCostco$6,999.9707 April 202612 April 2026
Costco Round Brilliant 0.50 ctw VS2 Clarity, I Color Diamond 14kt Gold Stud Earrings offerRound Brilliant 0.50 ctw VS2 Clarity, I Color Diamond 14kt Gold Stud EarringsCostco$729.9907 April 202612 April 2026
Costco Round Brilliant 1.28 ctw VS2 Clarity, I Color Diamond 14kt White Gold Wedding Ring offerRound Brilliant 1.28 ctw VS2 Clarity, I Color Diamond 14kt White Gold Wedding RingCostco$4,399.9907 April 202612 April 2026
Costco Round Brilliant 2.00 ctw VS2 Clarity, I Color Diamond Push Lock Stud Earrings offerRound Brilliant 2.00 ctw VS2 Clarity, I Color Diamond Push Lock Stud EarringsCostco$7,999.9907 April 202612 April 2026
Costco Round Brilliant 0.50 ctw VS2 Clarity, G Color Diamond 14kt White Gold Solitaire Pendant offerRound Brilliant 0.50 ctw VS2 Clarity, G Color Diamond 14kt White Gold Solitaire PendantCostco$1,455.68$1,149.99$305.69 Discount07 April 202612 April 2026
Costco Round Brilliant & Baguette 1.68 ctw VS2 Clarity, I Color Diamond Platinum Ring offerRound Brilliant & Baguette 1.68 ctw VS2 Clarity, I Color Diamond Platinum RingCostco$4,499.9907 April 202612 April 2026
Costco Round Brilliant 10.00 ctw VS2 Clarity, G Color Diamond 14kt Gold Eternity Strand Necklace offerRound Brilliant 10.00 ctw VS2 Clarity, G Color Diamond 14kt Gold Eternity Strand NecklaceCostco$11,999.9907 April 202612 April 2026
Costco Round Brilliant 1.28 ctw VS2 Clarity, I Color Diamond 14kt White Gold Wedding Ring offerRound Brilliant 1.28 ctw VS2 Clarity, I Color Diamond 14kt White Gold Wedding RingCostco$4,399.9930 March 202605 April 2026
Costco Round Brilliant 2.00 ctw VS2 Clarity, I Color Diamond Push Lock Stud Earrings offerRound Brilliant 2.00 ctw VS2 Clarity, I Color Diamond Push Lock Stud EarringsCostco$7,999.9930 March 202605 April 2026
Costco Morganite and Diamond 14kt Rose Gold Earrings offerMorganite and Diamond 14kt Rose Gold EarringsCostco$949.9930 March 202605 April 2026
Costco Princess Cut & Round Brilliant 2.00 ctw VS2 Clarity, G Color Diamond Platinum Halo Ring offerPrincess Cut & Round Brilliant 2.00 ctw VS2 Clarity, G Color Diamond Platinum Halo RingCostco$6,999.9730 March 202605 April 2026
Costco Round Brilliant 0.50 ctw VS2 Clarity, I Color Diamond 14kt Gold Stud Earrings offerRound Brilliant 0.50 ctw VS2 Clarity, I Color Diamond 14kt Gold Stud EarringsCostco$729.9930 March 202605 April 2026
Costco Round Brilliant 10.00 ctw VS2 Clarity, G Color Diamond 14kt Gold Eternity Strand Necklace offerRound Brilliant 10.00 ctw VS2 Clarity, G Color Diamond 14kt Gold Eternity Strand NecklaceCostco$11,999.9930 March 202605 April 2026
Costco Morganite and Diamond 14kt Rose Gold Earrings offerMorganite and Diamond 14kt Rose Gold EarringsCostco$949.9923 March 202629 March 2026
Costco Round Brilliant 0.40 ctw VS2 Clarity, I Color Diamond 14kt White Gold Men's Band offerRound Brilliant 0.40 ctw VS2 Clarity, I Color Diamond 14kt White Gold Men's BandCostco$1,799.9923 March 202629 March 2026
Costco Round Brilliant 5.0 ctw VS2 Clarity, I Color Diamond Platinum Eternity Band offerRound Brilliant 5.0 ctw VS2 Clarity, I Color Diamond Platinum Eternity BandCostco$8,499.9923 March 202629 March 2026
Costco Emerald Cut & Round Brilliant 6.74 ctw VS2 Clarity, H Color Diamond 18kt White Gold Bracelet offerEmerald Cut & Round Brilliant 6.74 ctw VS2 Clarity, H Color Diamond 18kt White Gold BraceletCostco$16,999.9723 March 202629 March 2026
Costco Oval Cut 1.52 ctw VS2 Clarity, I Color Diamond 14kt White Gold Ring offerOval Cut 1.52 ctw VS2 Clarity, I Color Diamond 14kt White Gold RingCostco$3,299.9923 March 202629 March 2026
Costco Round Brilliant 0.60 ctw VS2 Clarity, I Color Diamond 14kt Yellow Gold Pendant offerRound Brilliant 0.60 ctw VS2 Clarity, I Color Diamond 14kt Yellow Gold PendantCostco$1,699.9923 March 202629 March 2026
Costco Gemstone and Diamond 14kt Yellow Gold Earrings offerGemstone and Diamond 14kt Yellow Gold EarringsCostco$299.9923 March 202629 March 2026
Costco GreenPan Spectra Diamond 11-piece Cookware Set offerGreenPan Spectra Diamond 11-piece Cookware SetCostco$391.88$289.99$101.89 Discount16 March 202622 March 2026
Costco Round Brilliant 2.00 ctw VS2 Clarity, I Color Diamond Platinum Band offerRound Brilliant 2.00 ctw VS2 Clarity, I Color Diamond Platinum BandCostco$3,999.99$3,199.99$800.00 Discount16 March 202622 March 2026
Costco Round Brilliant 1.28 ctw VS2 Clarity, I Color Diamond 14kt White Gold Wedding Ring offerRound Brilliant 1.28 ctw VS2 Clarity, I Color Diamond 14kt White Gold Wedding RingCostco$4,399.9916 March 202622 March 2026
Costco Round Brilliant 1.50 ctw VS2 Clarity, G Color Diamond 14kt White Gold Hoop Earrings offerRound Brilliant 1.50 ctw VS2 Clarity, G Color Diamond 14kt White Gold Hoop EarringsCostco$1,399.9916 March 202622 March 2026
Costco Round Brilliant 0.60 ctw VS2 Clarity, I Color Diamond 14kt Yellow Gold Pendant offerRound Brilliant 0.60 ctw VS2 Clarity, I Color Diamond 14kt Yellow Gold PendantCostco$1,699.9916 March 202622 March 2026
Costco Oval Cut 1.52 ctw VS2 Clarity, I Color Diamond 14kt White Gold Ring offerOval Cut 1.52 ctw VS2 Clarity, I Color Diamond 14kt White Gold RingCostco$3,299.9909 March 202615 March 2026
Costco Round Brilliant 5.0 ctw VS2 Clarity, I Color Diamond Platinum Eternity Band offerRound Brilliant 5.0 ctw VS2 Clarity, I Color Diamond Platinum Eternity BandCostco$8,499.9909 March 202615 March 2026
Costco Round Brilliant 7.00 ctw VS2 Clarity, I Color Diamond 18kt White Gold Hoop Earrings offerRound Brilliant 7.00 ctw VS2 Clarity, I Color Diamond 18kt White Gold Hoop EarringsCostco$12,999.9909 March 202615 March 2026
Costco Round Brilliant 0.60 ctw VS2 Clarity, I Color Diamond 14kt Yellow Gold Pendant offerRound Brilliant 0.60 ctw VS2 Clarity, I Color Diamond 14kt Yellow Gold PendantCostco$1,699.9909 March 202615 March 2026
Costco Garnet and Diamond 14kt Yellow Gold Pendant offerGarnet and Diamond 14kt Yellow Gold PendantCostco$799.9909 March 202615 March 2026
Costco Round Brilliant 0.91 ctw VS2 Clarity, I Color Diamond 14kt White Gold Dangle Earrings offerRound Brilliant 0.91 ctw VS2 Clarity, I Color Diamond 14kt White Gold Dangle EarringsCostco$1,298.69$999.99$298.70 Discount02 March 202608 March 2026
Costco Oval Cut 1.52 ctw VS2 Clarity, I Color Diamond 14kt White Gold Ring offerOval Cut 1.52 ctw VS2 Clarity, I Color Diamond 14kt White Gold RingCostco$3,299.9902 March 202608 March 2026
Costco Round Brilliant 2.40 ctw VS1 Clarity, I Color Diamond Platinum Stud Earrings offerRound Brilliant 2.40 ctw VS1 Clarity, I Color Diamond Platinum Stud EarringsCostco$11,499.9902 March 202608 March 2026
Costco Round Brilliant 2.40 ctw VS1 Clarity, I Color Diamond Platinum Stud Earrings offerRound Brilliant 2.40 ctw VS1 Clarity, I Color Diamond Platinum Stud EarringsCostco$11,499.9923 February 202601 March 2026
Costco Round Brilliant 1.00 ctw VS2 Clarity, G Color Diamond 14kt White Gold Cross Pendant offerRound Brilliant 1.00 ctw VS2 Clarity, G Color Diamond 14kt White Gold Cross PendantCostco$1,499.9923 February 202601 March 2026
Costco 14kt Gold Diamond Cut Round Box Chain offer14kt Gold Diamond Cut Round Box ChainCostco$549.9923 February 202601 March 2026
Costco Round Brilliant 1.22 ctw VS2 Clarity, I Color Diamond Platinum Wedding Set offerRound Brilliant 1.22 ctw VS2 Clarity, I Color Diamond Platinum Wedding SetCostco$3,299.9923 February 202601 March 2026
Costco Round Brilliant 0.70 ctw VS2 Clarity, I Color Diamond 14kt Gold Clover Necklace offerRound Brilliant 0.70 ctw VS2 Clarity, I Color Diamond 14kt Gold Clover NecklaceCostco$1,199.9923 February 202601 March 2026
Costco Tanzanite and Diamond 18kt White Gold Ring offerTanzanite and Diamond 18kt White Gold RingCostco$2,799.9917 February 202622 February 2026
Costco Emerald Cut 1.58 ct VS2 Clarity, H Color Diamond Platinum Solitaire Ring offerEmerald Cut 1.58 ct VS2 Clarity, H Color Diamond Platinum Solitaire RingCostco$11,499.9917 February 202622 February 2026
Costco Round Brilliant 0.32 ctw VS2 Clarity, I Color Diamond 14kt Yellow Gold Necklace offerRound Brilliant 0.32 ctw VS2 Clarity, I Color Diamond 14kt Yellow Gold NecklaceCostco$1,199.9917 February 202622 February 2026
Costco Garnet and Diamond 14kt Yellow Gold Pendant offerGarnet and Diamond 14kt Yellow Gold PendantCostco$799.9917 February 202622 February 2026
Costco Blue Sapphire and Diamond 14kt White Gold Ring offerBlue Sapphire and Diamond 14kt White Gold RingCostco$2,199.9702 February 202608 February 2026
Costco Round Brilliant 0.90 ct VS2 Clarity, I Color Diamond 14kt White Gold Solitaire Pendant offerRound Brilliant 0.90 ct VS2 Clarity, I Color Diamond 14kt White Gold Solitaire PendantCostco$3,299.9902 February 202608 February 2026
Costco Round Brilliant 0.32 ctw VS2 Clarity, I Color Diamond 14kt Yellow Gold Necklace offerRound Brilliant 0.32 ctw VS2 Clarity, I Color Diamond 14kt Yellow Gold NecklaceCostco$1,199.9902 February 202608 February 2026
Costco Garnet and Diamond 14kt Yellow Gold Pendant offerGarnet and Diamond 14kt Yellow Gold PendantCostco$799.9902 February 202608 February 2026
Costco Round Brilliant 7.00 ctw VS2 Clarity, I Color Diamond 18kt White Gold Hoop Earrings offerRound Brilliant 7.00 ctw VS2 Clarity, I Color Diamond 18kt White Gold Hoop EarringsCostco$12,999.9902 February 202608 February 2026
Costco Round Brilliant 2.30 ctw VS2 Clarity, I Color Diamond Platinum Band offerRound Brilliant 2.30 ctw VS2 Clarity, I Color Diamond Platinum BandCostco$2,499.9902 February 202608 February 2026
Costco Round Brilliant 1.22 ctw VS2 Clarity, I Color Diamond Platinum Wedding Set offerRound Brilliant 1.22 ctw VS2 Clarity, I Color Diamond Platinum Wedding SetCostco$3,292.67$2,699.99$592.68 Discount26 January 202601 February 2026
Costco Round Brilliant 4.00 ctw VS2 Clarity, I Color Diamond 14kt Gold Tennis Bracelet offerRound Brilliant 4.00 ctw VS2 Clarity, I Color Diamond 14kt Gold Tennis BraceletCostco$3,499.9926 January 202601 February 2026
Costco Round Brilliant 1.75 ctw VS2 Clarity, I Color Diamond Platinum Ring offerRound Brilliant 1.75 ctw VS2 Clarity, I Color Diamond Platinum RingCostco$5,999.9926 January 202601 February 2026
Costco Round Brilliant 2.00 ctw VS2 Clarity, I Color Diamond Eternity Band offerRound Brilliant 2.00 ctw VS2 Clarity, I Color Diamond Eternity BandCostco$2,499.9926 January 202601 February 2026
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Costco Diamond deal

At Costco, you’ll find a wide selection and range of ⭐️Diamond deals⭐️. This week, Costco has 4 Diamond deals in the weekly ad. Remove your filters to view all Diamond deals, find the best prices, and save on your next purchase. Use the filters to find the deals of your favourite shop or product to make your purchases as cheap as possible, for the lowest price. You can save your search to stay updated when Diamond is on deal again in this or next week’s weekly ad. Is the product not on promotion now but still needed? Check out similar deals to find an alternative.

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Last update: Tuesday, June 16, 2026
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