Chemical Formula Al2O3
Crystal System Hexagonal
Refractive Index 1.76 – 1.77
Specific Gravity 3.9 – 4.1
Transparency Transparent to opaque
Double Refraction 0.0008
Luster Vitreous to adamantine
Cleavage None, but may exhibit parting
Mineral Class Corundum
Ruby The Most Desirable Gemstone
Ruby known as Manik in Hindi and Manikya in Sanskrit. It is distinguished for its bright red colour, being the most famed and fabled red gemstone. Beside for its bright colour, it is a most desirable gem due to its hardness, durability, lustre, and rarity. Transparent rubies of large sizes are even rarer than Diamonds. Ruby is the red variety of the mineral Corundum. Sapphire, the other gem variety of Corundum, encompasses all colours of Corundum aside from red. In essence, Ruby is a red Sapphire, since Ruby and Sapphire are identical in all properties except for colour. However, because of the special allure and historical significance.
Who can wear?
Consultation with astrologer before wearing as per their birth details is necessary. On General Leo zodiac born people can wear ruby.
Brahma Sthana & East
Blue Sapphire, Diamond, Hessonite Garnet, Cat’s Eye and all their respective alternative gemstones.
Alternate (Semi-precious) to Ruby:
Use of alternate gemstone should be, when one cannot afford precious gemstone like ruby. The effects of semi-precious gemstones will last less compared to precious gemstones.
Red garnet (umbalite, rhodolite), Red tourmaline, Red spinel