Faceted clear quartz, doublets of mother-of-pearl, lapis and London blue topaz in various shapes create these unique drop earrings in 18K yellow gold. From Ippolita. Imported. 18K yellow gold/clear quartz/lapis/London blue topaz/mother-of-pearl. 2.5" Drop. French wire. Almost all gemstones and black diamonds have been treated to enhance their beauty and require special care. Photo may have been enlarged and/or enhanced.