The Collection
Ruby
Gemstone Guide
About Ruby Gemstone
Ruby is the red variety of corundum, one of the hardest natural gemstones after diamond, rated 9 on the Mohs scale — a rare combination of fire and durability that has made it prized for centuries. Its signature red comes from trace amounts of chromium, with the most sought-after stones showing the deep, vivid "pigeon blood" hue historically associated with Burmese ruby, though fine natural rubies are also mined in Mozambique, Thailand and Sri Lanka. Many rubies on the market undergo heat treatment to improve color and clarity, a widely accepted trade practice that Jamsora always discloses on each stone's independent lab certificate. Whether you're buying a natural ruby for an engagement ring or adding to a gemstone collection, every certified ruby in our collection is graded by a recognized laboratory for authenticity, origin and treatment before it ships.