Pearl Gems are mostly adorned as beads and as cabochons in jewellery. Guptas Gems N Jewels manufactures Pearl Gems. Guptas Gems N Jewels also manufactures Indian Hand Crafted Gem - Studded Jewellery. Pearl Gems are made with the composition of calcium carbonate, conchioln and water. It is available in unique pearly lustre. Its hardness range is 3, so it is very soft. Pearls vary in colour from white, pinkish white to brown or black depending upon the type of mollusk and water. Some artificial colours can also be obtained by colour dying.