Mexican 1940s sterling silver green onyx bracelet. For Sale at 1stDibs Mexican 1940s sterling silver green onyx bracelet. For Sale at 1stDibs Jewelry Vintage 4s50s Mexican Silver Bracelet Green Onyx Stones Vintage Mexican Sterling Silver Green Calcite stone Bracelet 3 Etsy Vintage Mexico Taxco Silver Green Onyx Bracelet Etsy Vintage Mexican Sterling Silver Green Onyx Bracelet Etsy. Beautiful vintage Mexican Sterling Silver bracelet set with oval green onyx stones. This is a very pretty piece with a silver stripe running through the center of the stone. This piece is a delicate, link style with a box closure. HALLMARK: Heco en Mexico, Plata., CMR, it is hard to read the entire hallmark. MEASUREMENTS: 7" L interior, 7 1 2" with clasp, 1 2" W CONDITION: Excellent. Signs of wear appropriate to the age of the piece. MATERIAL: Sterling Silver, green onyx. GRAMS: 18. 0 Domestic Shipping: Priority Mail including free tracking and insurance. RETURNS POLICIES: All vintage items are FINAL SALE. We try to give accurate descriptions for each item. We are a smoke free environment. Our items are vintage, only one for sale. Thank you for visiting Papillon Vintage Shop.