Natural Gemstones: Reference Facts
Indicolite Tourmaline
Tourmaline is possibly the most colorful group of gemstones. Tourmaline occurs in almost every color from yellow, green, blue, pink, purple, red, colorless, black, and even bi-color or multi-color. The blue tourmaline is rarer than the other colors, and high quality stones are regarded as highly collectable. Blue tourmaline is called 'Indicolite', or occasionally 'Indigolite'. Indicolite comes in various shades of blue, from bluish green through dark blue, but frequently, it's a dark greenish-blue or grayish blue with inclusions. Indicolite Tourmaline with good color and quality is very scarce indeed. Indicolite tourmaline or blue tourmaline's price is rather under valued since these tourmalines are not well-knowned to jewelry buyers.
Because of its rarity and beauty, indicolite tourmaline is highly coveted and always in strong demand. This is a stone for gemstone lovers and collectors. If you are come across a fine indicolite tourmaline, go for it. You will certainly enjoy this beautiful and rare gemstone.
Indicolite tourmaline is perfect gemstone for beautiful jewelry and rare gemstone collection. It is much valuable, very desirable and durable gemstone. It is believed that indicolite brings happiness to life and help in relieving stress. Indicolite tourmaline is the modern birthstone for October and is the suggested gift for the 8th anniversary.
| Indicolite Tourmaline Known Facts
|
| Color |
Blue, Greenish Blue, Grayish Blue, Green-Blue
|
| Clarity
|
Type II - usually eye clean with some inclusions under magnification
|
| Crystal Structure
|
Trigonal
|
| Chemical Composition
|
Na(Li,Al)3Al6(BO3)3Si6O18(OH)4 - Complex borosilicate
|
| Luster
|
Vitreous
|
| Optic Character
|
Doubly Refractive
|
| Durability
|
Very Good
|
| Specific Gravity(SG)
|
3.06
|
| Refractive Index(RI)
|
1.62-1.64
|
| Birefringence
|
0.018
|
| Hardness
|
7.5
|
| Occurrence
|
Brazil, Russia, South Africa, East Africa, Madagascar, the United States |
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