Appointments are required. Please contact us.

For over 35 years, ADCO Diamond has had the privilege to serve many satisfied customers with whom we have developed lasting relationships. As we do not advertise, the majority of our customers come to us based on recommendations.

ADCO Diamond is very serious about conflict-free diamonds. Not only do we have written guarantees from our suppliers that our diamonds are conflict-free, but we also have written guarantees that all our stones are non-synthetic.

ADCO Diamond specializes in loose diamonds for engagement rings and other jewelry, including custom made. Our Graduate Gemologists’ expertise and service separate us from others.

For inquiries and informations, you can contact ADCO Diamond by phone at +1 617-720-0752