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Have a question? Check out our most frequently asked questions. 


What payment methods do you accept?

We accept payment from all major credit cards including Visa, MasterCard, Discover, bank transfer and American Express as well as Paypal and Affirm, our partner for a monthly financing alternative (with no hidden costs or fees). Payments are debited at the time of dispatch. You will receive a confirmation email once your order has successfully been placed.

Will my order be taxed?

Sales tax will be collected on all orders shipping to NY and may be collected on other states, depending upon their tax requirements. Taxes are charged based on the tax laws applicable to the location to which the order is shipped or delivered. Taxes are added to the order total at checkout.
How do I sell my diamond jewelry, designer jewelry or luxury watch?

If you are interested in selling diamonds, jewelry or luxury watches simply fill out our online form to receive a price quote.


Can rings be resized?

In some cases, yes. If a ring can be resized, that fact will be indicated in the product specifications section. Resizing of rings is free of charge. However, please note that once a ring has been resized, it cannot be returned.



What if I have a problem with a product?

If you experience any issues or have a concern about a product you purchased on, please contact us at 646 569 3655 or email us at

Do you offer warranties with your watches?
For any watch valued at $1,000 or more that does not carry a manufacturer’s warranty, myGemma may, at our discretion, offer a one-year warranty to the buyer of the watch. Our warranty shall only extend to the initial buyer of the watch. The warranty will provide that the item is free from defects in materials and workmanship under normal use for 12 months from the date of sale. The warranty covers the repair of the watch and, if repair is not feasible, replacement of the watch or a refund, as determined by myGemma in its sole and absolute discretion.
The  myGemma warranty “covers the mechanics and movement of watches” and excludes monetary loss. The warranty does not cover accidents, theft, loss, mistreatment, improper use, physical abuse, wear and tear from normal use, or damage resulting from tampering with the product, water or moisture exposure, or other physical damage. Damage resulting from or that occurs due to having the item serviced or modified by a third party renders the warranty null and void. The warranty does not cover fraudulent or counterfeit items. This warranty and the remedies set forth herein are exclusive and in lieu of all other warranties (including any original manufacturer’s warranties, which are hereby expressly disclaimed), remedies, and conditions, whether oral or written, expressed or implied. 

How do I know these products are authentic?

We have a zero tolerance policy for inauthentic products. We stand behind all the products we sell and guarantee that each product is 100 percent authentic.

How does the “Product Concierge” service work?

If you are not finding a specific item you are looking for or one that meets criteria you have in mind, simply email with the details on the item you are looking for. We will then be in touch to let you know if that is something that we are able to source for you.
Do items come with original packaging?

If an item has original packaging, that fact will be indicated in the product specifications. Products that do not come in the original package will be placed in a  myGemma box.

What are your condition standards?

We have very high standards when it comes to quality. Our sellers inspect each item carefully and guarantee the quality of the item and its condition. Each accepted item is categorized as Unworn, Mint, Excellent, and Good Condition:

We do not accept items that are in Poor condition.


How can I retrieve or reset my password?

To reset your password, click the “Forgot Your Password” link on the My Account login page and an email will be sent to the address we have on file for you with instructions for completing the reset process.

Do I need to create an account to make an online purchase?

No, you do not need an account to make a purchase from  myGemma. You may check out as a guest. You will still receive an email confirmation and shipment confirmation email.

How do I receive information on promotions or special offers?

We encourage you to join our mailing list by scrolling to the bottom of the  myGemma homepage and entering your email. We’ll then begin sending you details on special offers, exclusive promotions, and sales announcements.