Its softness makes it ideal for engraving

Citrine is the November birthstone and has been worn as ornament since ancient times across Greece

Blue apatite has been collected as a mineral specimen for far longer—found notably in Madagascar

The Tree of Life engraving layers the stone’s traditional associations with a symbol of deep cross-cultural continuity

Explorer Teardrop Cathedral Sterling Silver Earrings Red Its softness makes it idealTeardrop turquoise earrings in solid . 925 sterling silver. Turquoise is a hydrated copper aluminum phosphate, its blue to green color set by copper and iron. Most turquoise on the market is stabilizedsealed with resin to harden the naturally porous stoneand ours is no exception. Each stone is cut to a smooth teardrop cabochon and set in a simple silver frame. One pair per order. Natural stonecolor and matrix vary from piece to piece.