Natural Ruby specimen

Ruby specimen 318.80Ctsweight,
51mm x 21mm x 30mm dimension stone

A ruby is a pink to blood-red colored gemstone, a variety of the mineral corundum. Other varieties of gem-quality corundum are called sapphires.

Category: Oxide mineral variety

Formula: aluminium oxide withchromium, Al2O3:Cr

Crystal system: Trigonal

Crystal class: Hexagonal

Mohs scale: hardness9.0

Luster: Subadamantine, vitreous, pearly

Specific gravity: 3.97 – 4.05

Optical properties: Uniaxial –

Refractive index: nω=1.768–1.772
nε=1.760–1.763

Ruby is a powerful stone to shield against negative energy, psychic attack, and energy vampirism, especially of the heart energy.Ruby is a stone of Divine creativity. It boosts your energy levels and promotes high self-esteem, intuition, and spiritual wisdom.
According to astrology generally ruby should be worn in ring finger of right hand. Ruby is one of the most popular gemstones, and is used extensively in Jewelry. Ruby is used in all forms of jewelry, including bracelets, necklaces, rings, and earrings.