You can trust Costco to only offer the highest quality one-of-a-kind gemstones at the lowest possible price. Our long-standing relationship with our suppliers guarantees we get the best selection at the best value. Costco's experienced buying team works with our suppliers evaluating and hand selecting each gemstone to ensure it meets the strictest quality standards in the industry in cut, colour, clarity and craftsmanship. You can be confident your purchase is as special to us as it is to you.
- Trillion Cut Amethyst
- Stone Size: 11mm
- Stone Weight: 4.25ct
- Total Diamond Weight: 0.25ctw
- Total Diamonds: 24
- Diamond Colour: I
- Diamond Clarity: VS2
- 18ct White Gold
- Chain Length: 18"
- Clasp: Lobster
We guarantee that all diamonds supplied by costco.co.uk are as follows: Clarity to be VS2 or better and colour to be "I" or better as outlined on the industry grading guide.
To view additional jewellery information click here.
Diamond Carat | 4.25ct |
Diamond Cut | Trillion |
Diamond Clarity | VS2 |
Colour | I |
Material | 18ct White Gold |
Delivery Additional day(s) transit may be required for remote areas. These deliveries will require an adult signature. Please note that we are currently unable to ship to the Channel Islands, Post Office boxes and BFPO. Public and Regional holidays may affect delivery lead times. Delivery times may vary in the event of adverse weather conditions. Gift messaging is available during the checkout process. Returns Please pack your parcel up securely, preferably using its original packaging, but removing the delivery label. If the item arrived to you in a box, it will need to be in a box at the time of pick up. In the case of jewellery items, refunds under the Costco Customer Satisfaction Guarantee and Refunds Policy will be subject to our positive verification of the item. Such refunds are also conditional on the item not having been damaged or changed in any way (i.e. resized or reset). This process may require seven to ten business days. We regret that we cannot accept and process online purchase returns at any Costco Warehouses. Find out more about our Delivery, Cancellations and Assistance Policy |