4 hrs LeftGeode, Black Onyx and Vintage Glass Beads Necklace 34 inches length x 3/4 in.Est. $100-$10,000$10(1 bid)Auctions at Deer Ridge FarmSaugerties, NY
May 20, 2026Vintage Necklace 14K Gold with Pear Shaped OnyxEst. $200-$300$50Affiliated AuctionsTallahassee, FL
May 28, 2026Two Vintage Sterling Silver Onyx Necklace PendantsEst. $100-$150$40Gemini Auction CompanyKatonah, NY
May 28, 2026Vintage Onyx & Sterling Heart Pendant NecklaceEst. $100-$150$20Gemini Auction CompanyKatonah, NY
May 28, 2026Vintage Alpaca Inlaid Abalone & Onyx NecklaceEst. $50-$100$20888 AuctionsRichmond Hill, ON
4 days LeftVintage Beaded Necklace in 14k Gold with Diamonds and 13.5mm Onyx BeadsEst. $2,366-$3,075$100BidhausNew York, NY
4 days LeftVintage 1960's 18K Yellow Gold Black Onyx Necklace 31 InchesEst. $2,015-$2,619$100BidhausNew York, NY
3 hrs LeftVINTAGE TIFFANY & CO. 18K GOLD ONYX NECKLACEEst. $61,200-$68,400$50,000Modern JewelryValley Village, CA
6 days LeftVan Cleef & Arpels 18k Gold 20 Motif Vintage Alhambra Diamond Onyx Necklace CertEst. $80,000-$96,000$52,000Chairish AuctionsNew York, NY
3 hrs LeftVINTAGE 18K GOLD CARVED CORAL DEVIL MASK ONYX TASSEL NECKLACEEst. $19,550-$21,850$16,000Modern JewelryValley Village, CA
3 days LeftVan Cleef & Arpels Vintage Alhambra 20-Motif Necklace in 18K Yellow Gold with Onyx, Available andEst. $22,875-$27,450$11,250SEUYCORaleigh, NC
22 hrs LeftVintage 14k Yellow Gold Onyx Carnelian Bar Link Necklace 38"Est. $11,898-$13,385$3,750Diamond DepotNew York, NY
Ends in 2d 11hVintage Black Onyx Diamond Geometric Pendant Necklace 14K Yellow Gold 28.50 GrEst. $7,000-$8,000$2,800Chairish AuctionsNew York, NY
May 17, 202625.70-11.3 MM ONYX VINTAGE 115.60 GRAMS 18 KARAT YELLOW GOLD CHAIN NECKLACEEst. $44,880-$50,160$36,750Modern JewelryValley Village, CA
2 days LeftVan Cleef & Arpels Vintage Alhambra Yellow Gold (18K) Onyx Men,Women Fashion Pendant Necklace (Gold)Est. $4,075-$4,900$2,000SEUYCORaleigh, NC
May 17, 2026VINTAGE ONYX CARNELIAN 14K YELLOW GOLD FANCY BAR LINK NECKLACE 38" LONGEst. $10,671-$11,927$8,700Modern JewelryValley Village, CA
May 24, 2026Van Cleef & Arpels Vintage Alhambra Necklace 10 Motifs Onyx 18K Yellow Gold (750) Women'S NecklaceEst. $14,875-$17,850$7,400SEUYCORaleigh, NC
4 days LeftTIFFANY&Co. Tiffany Vintage Onyx 925 Necklace, Black with Silver Hardware, Comes Box and Case,Est. $1,225-$1,475$610SEUYCORaleigh, NC
Buy NowVintage Black Onyx Diamond Geometric Pendant Necklace 14K Yellow Gold 28.50 Gr$5,676Chairish AuctionsNew York, NY
Buy NowVintage 14K Gold Carnelian & Black Onyx Beaded Necklace$200(5 bids)Coral Gables AuctionCoral Gables, FL
Buy NowVan Cleef & Arpels Vintage Green Onyx Wreath Pendant Necklace in 18k Yellow Gold$5,400Diamond DepotNew York, NY
Buy NowVintage Black Onyx Diamond Geometric Pendant Necklace 14K Yellow Gold 28.50 Gr$5,676Chairish AuctionsNew York, NY