Lapis lazuli is characteristically recognized by its color. It yields H2S gas (smells of rotten eggs) when subjected to HCl. Lapis lazuli today is still a very popular lapidary material. It is made into a variety of hand-crafted objects such as carvings, spheres, beads, cabochons and other jewelry items.10.7mm round lapis-lazuli.The lapis-lazui is AAA quality.It could be made necklace,bracelet and earrings.Approx．15.75inches