Union Square Diamond Buyers


Frequently asked questions

Yes, we buy gold. After testing the karat and weight, we pay you for what the current gold prices are at the time.

We pay premium on major brand jewelry and signed jewelry pieces.

We have purchased millions of dollars in diamonds, diamond jewelry and watches in the US and internationally.

We pay the highest prices in the industry. We have been in business for over 35 years and are accredited with BBB and GIA.

Union Square Diamond Buyers is also licensed and regulated by the state of California. Our excellent reputation has led us to maintain worldwide clientele. Serving returning and satisfied customers throughout several generations is a testimony of our integrity and honesty. Our expertise allows us to find the best home for every piece we buy.

We offer immediate payment by bank wire, check, cash, or cashier’s check.

Our experts are GIA Graduate Gemologists and have over 35 years of experience. We will give you an accurate appraisal of your pieces and make an offer. Besides the metal and stone value, we consider other aspects of your pieces such as age, era, and rarity.

Yes, we suggest making an appointment. Having an appointment guarantees one-on-one time with an expert. If any appraisals or certifications are available, we recommend you email or fax it prior to your appointment.

We will arrange for your valuables to be picked up:

  1. By overnight reputable shipping companies insured up to $50,000.
  2. By armored truck for valuables over $50,000.
  3. In some cases, our experts will travel to your location.

All items are insured at our location by Lloyd’s of London.

A certified diamond will not increase the diamond’s worth. Having a certification helps ensure that the diamond is not manufactured or altered in any way. Certification is a representation of the diamond primarily for determining its value. In some cases, having a certificate will help us make an offer before evaluating the actual piece.