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To our loyal Customers:

Starting June 9th in the Covid-19 phases, in order to protect our customers, we will adhere to new safety standards for the foreseeable future. All customers with appointments will receive our full attention as no one else will be permitted in the store until they depart. In between appointments we will deep clean the store, including steaming all jewelry.

Please call or email us to set up an appointment. Appointments will last for 45 minutes but may be extended if there is no appointment directly after.

ADCO Diamond
333 Washington Street / Suite 707
Boston, MA 02108
Phone: 617-720-0752
Fax: 617-720-0549
Email: info@adcodiamond.com


Monday – Friday: 10:00am – 5pm*
Saturday: 10:00 – 2:30pm*
Sunday: Closed

*By appointment only until further notice.


All prices shown are estimates.  The final price will be based on the metal prices of the day.


Return Policy:

No Returns/Refunds after 14 days from date of purchase. Custom orders are final sale and not refundable and non-exchangeable. Merchandise that has been altered in any way is not returnable

If an item is a custom made order or final sale, we will contact you for approval before we proceed with the order.

Please contact us before you return the merchandise for approval.

Items must be in their original purchase condition, including all product documentations. You will be responsible for return shipping and insurance fees.

Call 617.720.0752 or email us at info@adcodiamond.com.


Privacy Policy:

Adco Diamond shares your concern regarding your personal information. Please be assured we do not share your information with any unaffiliated party, unless it is necessary to verify a purchase or required by law. Any information collected is for customer service.

If you are under the age of 16, you should not use the website and should not submit any personal information.

ADCO Diamond validates parking at 33 Arch Street, which is a short walk away. Entrance to the garage is on Hawley Street With validation parking costs $24 than three hours during the week. On weekends, the cost is $11 with no time limit.