coi Jewelry

**COI Tungsten Carbide Blue Silver Queen Crown Dome Court Ring-7810DD

Custom Made
TG7810DD bay fai
Special Price $119.99 Regular Price $299.99
Free Shipping No Minimum

to your door with any purchase

This item is listed with the price on piece basis. If you want two rings,you have to select and add it into your cart two times.

If your size is not available on this product, please send email to to enquire about placing a back order or custom design order.

COI Tungsten Carbide Blue Silver Queen Crown Dome Court Ring.  Comfort fit with inside round shank.  A 100% tailor-made ring for you.  Classic with delicated details, unsurpassed quality plus incredible value!   Perfect as a wedding band, engagement ring or just for everyday wear due to its extreme comfort!   

Category: Ring
Width: 6.0mm(0.24 inches), 7.0mm(0.28 inches) or 8.0mm(0.32 inches)

2.0mm(0.07 inches), 2.25mm(0.08 inches) or 2.5mm(0.09 inches)

Material: Tungsten Carbide, Cobalt Free  
Finish: Satin Finished


Tailor Made. Usually ships in 7-10 business days.

14-Day Returns.  FREE Worldwide Shipping.  100% Quality Guarantee.

While not wearing your ring, store it separately in a small pouch or bag so it will not scratch other, softer metal jewelry items. To clean your ring, mix a few drops of mild detergent (household soap works well) with warm water, dampen a soft cloth with the mixture and rub the surface of the ring to remove dirt and oil. You can then use a cotton swab to clean any hard to reach grooves or around diamonds. Rinse with warm water and dry with a soft cloth. As with all jewelry, avoid contact with any harsh chemicals including household products such as ammonia, bleach and chlorine. If your ring does come in contact with any of the above chemicals, clean the ring right away using the above cleaning instructions.

Service Location(s) Business days Fee
Free Worldwide Registered Airmail Worldwide 7 - 15 FREE
FedEx Overnight Express or similar service USA & Canada, UK (London) 1 US$ 60.00
FedEx or similar service USA & Canada  3 - 5 US$ 25.00
FedEx or similar service Australia, New Zealand & Asia  3 - 5 US$ 27.75
FedEx or similar service UK, Western Europe  3 - 5 US$ 29.75
FedEx or similar service Other countries  3 - 5 US$ 39.75

14 Days Returns Policy for Refund, Exchanges and Resizing

All our products are all finely crafted and produced with extreme care. All finished products have undergone very straight and detailed quality check. We are proud to offer the quality that surpasses customers’ expectations. We want you to be absolutely satisfied with your purchased jewelry; however, if you are not completely satisfied with your purchase, you may return the item for either a refund, resizing or exchange within 14 days from the date of receipt of the goods.


Our 14 Days Return Policy gives you abundant time to consider your purchase. If for any reason you are not satisfied with the quality of the jewelry, you can return any non-engraved, unworn item(s) in its original condition and packaging within 14 days from the date of receipt for a refund or an exchange. The restocking fee for refund or exchange is 25% of the purchased price of the item(s) and shipping, order administration and handling fees are non-refundable, if applicable.


If there are any free gifts with the purchase, they must be returned with the products which are to be refunded too. When we receive your returned item, it will be reviewed by our Quality Assurance department. Once and it is accepted, your refund will be processed in just a few business days.



Resizing of all the rings purchased from are possible and a charge will be applied. The exact cost may vary, depending on the scope of re-sizing and the complexity of the different models. Additional Shipping and handling are to be incurred too.


How to return?

It is necessary to follow’s return procedure outlined below if a customer decides to return a product or the return will not be accepted and the returned item will be rejected and shipped back to the customer:

  • 1. Your Return Authorization Number (RA#). Email us at for a Return Authorization Number.
  • 2. Package Your Return. Include all original packaging and gift box if it is for a refund.
  • 3. Ship Your Package. Customers are highly recommended to insure the returned package. No written reference to jewelry merchandise or diamonds or related words should appear on parcel because it will increase the risk of theft and loss. You are recommended to mark it as a gift.

    If you have any questions about our return procedure, please don’t hesitate to contact us at



    If you’d like to cancel or change a order for any reasons, please contact us at as soon as possible and make sure to include your order number and other order details. However, we cannot change or cancel an order once it has already entered the Production/Shipping phase or has already sent out. If your order cannot be cancelled, you can simply return it to us, a 25% restocking fee will be charged while shipping, order administration and handling fees are non-refundable, if applicable. reserves the right to cancel any order that appears suspicious or fraudulent. All fraudulent transactions will be reported to proper authorities.



    Once we received your returned item(s), your money will be refunded to you for any payments less any applicable fees against your purchase. The first credit will be made within 7 business days of receipt and verification of the merchandise. Refunds on purchases made with a credit card will only be credited to the same card. The restocking fee for refund is 25% of the purchased price of the item(s) and shipping, order administration and handling fees are non-refundable, if applicable.