Glittering Stones » Semi Precious Stones » Demantoid

Semi Precious Stone Demantoid

Demantoid is the green gemstone variety of the mineral andradite. It is a member of garnet group and the andradite is the calcium, iron rich garnet. Demantoid is an expensive and rare of garnet gemstones with fine specimens pricing thousands of dollars per carat.

The appearance of demantoid is green, but exact shade ranged from light yellowish peridot green to nearby colors of fine emerald. Demantoid also has a high refractive index of 1.80 to 1.89 and the chemical formula is Ca3Fe2(SiO4)3 with chromium. The gemstones with more intense green coloration are more highly valued, but lighter stones display substantially more fire.

Spectacular qualities of the gemstone:
The striking gemstone is extremely hard and lacks the traditional horse tail inclusions. It is the most sought after gemstone in jewelry industry, owing to its hardness. The diaphaneity of the stone varies from translucent to transparent and its refractive index varies from 1.80 to 1.89. The stone has trace amount of nitrogenous impurities, so it has improper cleavage. Though it possesses poor cleavage, the stone is valued for its high luster and ultimate quality.

Healing benefits of the stone:
The demantoid stone is closely associated with heart and plexus chakra. It plays a vital role in enhancing metabolic activities and increasing the blood circulation. The gemstone also acts as stress reliever and brain stimulator. The crystal healing properties of the gem varies depending on its shades of color.

Uses:
It is widely used in jewelry making industry and crystal therapy. To some extent, the sparkling stone is also used in crystal meditation. The crushed gemstones are greatly used in various industrial and automobile parts manufacturing process.

Historical Facts of Demantoid

Refractive Index: 1.880 - 1.889

Chemical Composition: Ca3Fe2(SiO4)3

Hardness: 6.5

Density: 3.84

Crystal Group: Cubic

Color: Green, Yellow green

Ocurrence: Russia, Namibia, Iran, South Africa

Gemstone Demantoid Jewelry