Diamonds
Loose and mounted diamonds are among the most valuable items we handle - Austin Auction Gallery has sold individual diamonds for well over $100,000. If you have a diamond to value or sell, our specialists can help.
What it's worth
Value rises sharply with size and quality: small accent diamonds are modest, while certified one-carat-plus stones bring thousands, and large, fine, GIA-graded diamonds reach five and six figures. The four Cs and certification drive value.
Our sold results
Auction results for Diamonds
Showing 4 results
Auction Results
| Lot | Sold | Price realized |
|---|---|---|
| (3) ESTATE 14KT YELLOW GOLD BANGLE BRACELETS, ONE WITH DIAMONDS | Dec 2025 | $800 |
| (2) ESTATE 14KT YELLOW GOLD & BLUE OPAL RINGS, 1 WITH DIAMONDS | Dec 2025 | $500 |
| L. KLEIN 'FIORE' 18KT GOLD CLASSIC CHAIN NECKLACE WITH DIAMONDS | Jun 2025 | $2,750 |
| ANTIQUE SILVER FESTOON PENDANT, 1.42CTTW DIAMONDS & 19KT GOLD CHAIN | Mar 2025 | $1,300 |
Overview & history
Diamonds are valued on the 'four Cs' - carat weight, cut, color, and clarity - with certified stones (especially those graded by the GIA) and larger, finer diamonds commanding the strongest prices. Both loose, unmounted diamonds and diamonds set in rings and jewelry come to auction, where they reach a broad market of buyers and dealers. Austin Auction Gallery regularly sells fine diamonds, including individual stones realizing well into six figures.
Frequently asked
What is my Diamond worth?
Value rises sharply with size and quality: small accent diamonds are modest, while certified one-carat-plus stones bring thousands, and large, fine, GIA-graded diamonds reach five and six figures. The four Cs and certification drive value. Send photos for a free appraisal.
How is my Diamond valued?
A diamond's value rests on carat weight, cut, color, and clarity; a GIA (or comparable) certificate documents these and significantly aids sale. Our specialists evaluate stones and recommend certification where it adds value.
How do I sell my Diamonds?
Austin Auction Gallery sells fine and estate jewelry and offers free, no-obligation appraisals, reaching collectors, dealers, and retail buyers. Contact us to consign.
What could your Diamonds bring at auction?
Our specialists provide free, no-obligation auction estimates. Send a few photos and we'll tell you what it could bring.