Garnet Gems are available in usually Red or Orangish Red colour. Guptas Gems N Jewels manufactures Garnet Gems. Guptas Gems N Jewels also manufactures Indian Hand Crafted Gem - Studded Jewellery. Garnet Gems are made with the composition of Aluminium Silicate with Magnesium / Iron / Calcium. The Gem is available in Vitreous lustre with 6 1/2 - 7 ½. Hardness. The Gem comes in Cabochon and Beads cut.