Ark Angel Alchemy 110ct. Larimar, Druzy and Blue Topaz 18" Necklace with Extender- Free Silver Gift Box 140ct.t.w. Druzy, Larimar and Blue Topaz 18" Necklace with 2" extender. Total necklace length, 20". Weight is 27 grams. The central, larimar stone is 30 mm in diameter. The smaller, oval, drusy stones are 9 x 11 mm and the emerald cut, blue topaz stones are 7 x 10 mm.* The gemstone width of the necklace is 166 mm or 6,5".* Handmade, Polished Finish, Excellent Quality, Meticulous Detail Free Silver Gift Box