Costco makes purchasing gemstones simple and easy, by offering only the industry's highest quality gemstones at the lowest possible price. Whether you are looking for garnets, sapphires, emeralds, or aquamarines, Costco.ca has what you need. All of our gemstones are inspected by our team of Graduate Gemologists to ensure they meet Costco's strict standards. Whatever the occasion, let Costco.ca help you celebrate!
 

• Metal:  950 platinum  
• Tanzanite Shape:  Trillion  
• Trillion Size:  7.5 mm  
• Total Diamond Weight:  0.43 ctw  
• Total Number of Diamonds:  49  
• Ring Size:  7 - Sizeable within one size (Costco does not provide this service)

We guarantee that all diamonds supplied by Costco Wholesale are as follows: Clarity to be "VS2" or better and colour to be "I" or better as outlined on the industry grading guide.


Model: R30404

• Number of Stones: 50
  
• Ring Size: 7
  
• Stone: Diamond & Tanzanite
  
• Stone Shape: Trilliant
  
• Stone Size: 7.5 mm (0.3 in.)
  
• Total Carat Weight: 0.43
  
• Type of Metal: 950 Platinum
  

Gift Messaging is available. You will have an opportunity to enter a gift message during the checkout process.

Standard shipping is via UPS insured and is included in the quoted price. Signature is required. The estimated delivery time will be approximately 7 to 10 business days from the time of order.

Costco.ca products can be returned to any of our more than 600 Costco warehouses worldwide.

Costco's Risk Free 100% Satisfaction Guarantee

Membership: We will refund your membership fee in full at any time if you are dissatisfied.

Merchandise: We guarantee your satisfaction on every product we sell and will refund your purchase price, with the following exceptions:

1. Electronics: Costco will accept returns within 90 days from the date of purchase for televisions, projectors, computers, cameras, camcorders, touch-screen tablets, MP3 players and cellular phones and other products identified by Costco from time to time.

2. Diamonds: When returning items containing a 1.00 ct diamond or larger, Costco will require additional time to verify the diamond, in which case a refund will be approved upon positive verification. This process may require two to five business days.

Costco may in the future restrict its return policy regarding other products. Restriction will be shown at the point of purchase.