14K White Gold Purple Garnet and Diamond Necklace. This unique necklace features a 1.45ct purple garnet prong set and accented by curved bale featuring .05cttw of G/SI quality round diamonds. Comes with a 14K white gold 18 inch cable chain with lobster claw clasp. Purple garnet is a rare garnet variety, discovered in Mozambique in Eastern Africa. This untreated gemstone features a wonderful color shift with wine like hues of grape and cranberry. This is a one-of-a-kind piece and part of the Sharing the Rough program.