A look at what is currently available on eBay
 8 size RING ( silver )*** WHITE TOPAZ & BLACK ONYX *** wow ! US $10.00 
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 WHOLESALE LOT: 2 rings ( blueberry onyx , iolite quartz) US $.99
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 1 Mens Stainless Steel Ear ring Stud Blk Onyx Fake Plug US $.26
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 8.5 size RING ( silver )*** FACETED DEEP RED ONYX *** wow ! US $.99
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 BLACK ONYX .925 SILVER RING SIZE 9 3/4 US $7.99
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 SILVER AND ONYX RING IN A SIZE 6.5 US $25.50
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 BLACK ONYX .925 SILVER RING SIZE 9 1/4 US $7.99
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 Size 8 Lady's Jewelry 1.76ct Black Onyx & 0.62ct Quartz Yellow Gold Filled Ring US $1.79
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 New Oval Black Onyx Sterling Silver Ring - Size 9 US $26.99
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 GREEN ONYX .925 SILVER RING SIZE 9 US $8.49
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 BRECCIATED BLACK ONYX .925 SILVER RING SIZE 8 3/4 US $7.99
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 SQUARE FACE MASONIC MASON MEN'S RING in ONYX sz 8,9,10,11,12,13-rm18115we US $15.33
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CARTIER PANTHERE Pave Diamond Emerald Onyx Gold Ring, CARTIER Rare 18k Gold Diamond Onyx Panthere Dome Ring sz.5, ESTATE ART DECO 1.63 ct OVAL OLD MINE CUT DIAMOND 2ct RUBY ONYX PLATINUM RING, ART DECO 2ctw YELLOW DIAMOND EMERALD ONYX PLATINUM RING, DECO 1.36ctw EURO DIAMOND EMERALD ONYX CUSHION RING, ANTIQUE STYLE 1.70ctw DIAMOND EMERALD ONYX CUSHION RING, ESTATE ART DECO 1.57ct EUROPEAN CUT CENTER DIAMOND EMERALD ONYX PLATINUM RING, ART DECO PLATINUM, EMERALD DIAMONDS & ONYX BYPASS RING, Estate Platinum Art Deco Emerald, Onyx & Diamond Ring , *WOW * ESTATE 1.51 TOTAL DIAMOND WEIGHT DIAMOND & BLACK ONYX PLANTINUM RING**, DRAMATIC ESTATE CUSTOM HEAVY 14K DIAMOND AND ONYX RING, 18K Dome Style Ring With White Onyx And Diamonds 5.50CT, Estate Platinum Yellow Gold Emerald Onyx Art Deco Ring, MUST SEE UNIQUE ANTIQUE ART DECO 1.05CT DIAMOND PLATINUM & ONYX ENGAGEMENT RING!, 3 Ladies Designer TRISKO 14K Yellow Gold Diamond Onyx Rings, FANCY DOME RING! 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BUNZ 18K YELLOW GOLD and ONYX .65 CARAT DIAMOND BAND RING, LARGE ESTATE 14K PINK ROSE GOLD DIAMOND BLACK BLACK ONYX ROUND FLOWER RING R1161, 1940's RETRO DECO NATURAL CABOCHON PERSIAN TURQUOISE ONYX DIAMOND PLATINUM RING, Ring 14ky gold 4 diamonds .5 ct black onyx size 9 3/4 Free shipping, BULGARI PYRAMID RING 18KT WHITE GOLD, DIAMOND, BLACK ONYX STONE BVLGARI Size 6, Vintage Platinum Diamond Black Onyx Filigree Ladys Ring, Retail $5,100.00-"B&H" Vintage Diamond,Multi Gems w/Onyx 14K Gold Ring-Size9.5, RARE! AUTHENTIC CARTIER 18K YELLOW GOLD MOTHER OF PEARL BLACK ONYX RING SIZE 7, David Yurman Large Black Onyx 18K Gold cable chain pave diamond RING 6, CHIC Nardi 18k Gold Amethyst, Onyx, & Coral Ring Set, ANTIQUE ONYX Y GOLD VICTORIAN SUITE NECK,BROO,ER,RING, ESTATE LARGE SOLID DIAMOND BLACK ONYX 14KT 2 TONE GOLD FILIGREE MENS RING #20247, VINTAGE TIFFANY & CO 18K GOLD ONYX DIAMOND RING, NEW BVLGARI 18 CT WHITE GOLD AND ONYX BULGARI ROTATING RING AN851998 54mm US-6, BVLGARI 18 CT WHITE GOLD AND ONYX BULGARI ROTATING RING AN851998 53mm / 6 / M½, NEW BVLGARI 18 CT WHITE GOLD AND ONYX BULGARI ROTATING RING AN851998 55mm US-7, Roberto Coin Panda Onyx Diamond Cocktail Ring 18K Gold, Kabana #WRIF264OXMW 14kt White Gold Inlaid White MOP with Onyx and Diamond Ring, Neda Behnam 18K Onyx Garnet and Diamond Tiger Ring, EYE-CATCHING 18K GOLD, DIAMONDS & ONYX LADIES RING, Rare Antique Vintage Onyx Emerald Diamond Ring PLT, Estate Vintage 18K Gold 1.75 CT Diamond Pave Onyx Halo Oval Cocktail Ring Heavy, RARE! AUTHENTIC VINTAGE TIFFANY & CO 18K YELLOW GOLD CORAL ONYX REVERSIBLE RING, NEW 2.15ctw Micro Pave Diamond Show Off Ring 18K White Gold Black Onyx, DON'T MISS THIS GORGEOUS ESTATE RING OF BLACK ONYX & PAVE DIAMONDS 14K, 14K Yellow Gold Mens Diamond & Onyx Ring Size 10, Asprey 18K White Gold Micro Pave Diamond Onyx Ring, Opal Cameo Onyx Diamond 14K Yellow Gold Ring, Judith Ripka 18K Yellow Gold Large Black Onyx Glacier Diamond Ring NEW Size 6, 1900 PLATINUM BEZEL RAISED OVAL ONYX 1.00CT BEADED DIAMOND 14K YELLOW GOLD RING, 14KT Y/G Round Flat Onyx Ring 11.6gr, Estate 18kt YG Black Onyx & Diamonds Ring with Blue Topaz 10.00ct. Circa 1960’s, David Yurman Unique Carved Onyx and Diamond 18kt Yellow Gold Ring, Holzel German Bronze Onyx Figurine of girl ring Holder, B.T Micro Craft 18K750 Yellow Gold Onyx Diamonds Ring, 14K Solid Gold Heavy Ring w/Diamond Surrounded Black Onyx sz 9+ Beautiful New,