Sterling Silver Indicolite in Quartz Pendant #2 measures approximately 3/4" x 9/16" x 5/16" (19mm x 15mm x 9mm) without the silver loop and bale and weighs 5.7 grams. Indicolite is blue Tourmaline, and it is most often an inclusion of fine Tourmaline needles in these crystals. This crystal is a on the grayish blue side, rather than the blue side which the photo shows. Set in Sterling Silver.