Guptas Gems N Jewels manufactures Ruby Gems. Guptas Gems N Jewels also manufactures Indian Hand Crafted Gem - Studded Jewellery. Ruby Gems are made of aluminium oxide. It is available in vitreous lustre with 9 hardness. The shade of red varies from pinkish to purplish or brownish red, depending upon the chromium and iron content of the stone.
