as does this pretty gem

Originally carved with a Family Crest

came about in the 1600's and has been produced continually since that time

and also allows some light into the bottom to shine up through the stone

Art Deco Sapphire Solitaire Engagment Ring inv 886 as does this pretty gemWhile this 18K white gold mounting dates to the early 1920's Art Deco era, the stunning Ceylon Sapphire is new. We travel the world buying the finest gems we can find. This lovely, Cornflower Blue Sapphire came from Sri Lanka, or Old Ceylon, and the rich shade truly compliments this antique mounting. Metal: 18K White Gold Gem: Ceylon Sapphire 1. 34 Carats Gem Measurements: 6 mm, Square Cushion Cut Ring Size: 6 Marks: "18K" Stamped on the inside band