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Old  stone by Steptoe1
Onyx and Marcasite Ringby nutsabo…
Vintage 1960's early 1970's ( broken ) ONYX STONE by antique…
Southwestern and  onyx cuff bracelet sliver by Tangoes
Onyx-pearl earrings by Ajfind
Large Vintage Sterling Ring with Marcasite and Onyxby freiheit
Vintage Art Deco Sterling Silver and Onyx link braceletby Musicfan
Onyx? Ring and Pendantby nosretep
Sterling Silver Broochby melaniej
Green Onyx Strung Necklace w/ Sterling Clasp Antique Market Find $3.00by Efesgirl
Black Onyx Gold and Pearl Bead Necklaceby Junkman60
Could you tell me something about this pendantby Hilara
Info. Needed on Sterling Black Onyx Pendant-LAR.IN-925by LOUMANAL
10K Black Onyx Diamond Ring Hallmarked BOAby JoyB
Square Onyx and Silver Pendant / .925 Marked Italy / Circa 20th Centuryby mikelv85
Mexican Silver and Onyx Clamp Bracelet / Marked Mexico .950 / Circa 20th Centuryby mikelv85
antique, art deco?  gold, black onyx Toni1969
2.5 inches Vintage  Sterling Silver Scorpion + Black Onyx pendant by southcop
Vintage Deco Onyx Filigree Binder Brothers Earring Necklace Sterling Set Demi Parure by Moonsto…
Brooch for WOMEN- Sterling & Onyx - Marked GERMANYby BHock45
Genuine Green Onyx with Mexico Sterlingby LaCours…
My grandmothers (possibly great-grandmothers) Onyx-Diamond Ring & Pendantby ginnymac3
braclettby huey
Onyx and Marcasite Broochby vintage…
Necklace,Bracelet,Earring michelle34
Large Onyx Crossby SantaRosaOnyx
Vintage "Black Onyx" Rings from the 1950'sby bahamaboy
Vintage Tiffany Earringsby Siouxdahlem
A  bracelet present to my mother in ?????by suziq11
Green Onyx Art Deco/Nouveau Necklaceby TamaraB