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PEAR RUBELLITE                 NATURAL COLOR                 Hardness 7.5  
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Tourmaline chemical composition is (Na, Li,Ca) (Fe2, Mg, Mn, Al)3 Al6 I(OH)4 I (BO3)3ISi6O18I .
Crystaline system: Trigonal.
Occurences: In the acid magmatic rocks and associated pegmatites, limestones and schists, placers.
Coloured tourmalines are related to sodolithic pegmatites.
One distinguishes two principal types of tourmalines: the hexagonal type and the triangular one.
14.25 cts. Pear rubellite tourmaline single
Pear rubellite tourmaline gemstone, exclusive loose faceted tourmalines, Madagascar gemstones shopping x Pieces: 1 Rubellite x x Type: 100% Natural
Color: Nice-Red Shape: Pear faceted
Weight: 14.25 Carats Size: 15 x 16 mm.
Clarity: MI2 Luster: Good
Treatment: None (N) Origin: Madagascar
Refr. Index: 1.62-1.64 Hardness 7.5
 
Stone Price: USD 7125.00

ref:Trd 1425

Pear rubellite tourmaline gemstone, exclusive loose faceted tourmalines, Madagascar gemstones shopping

Pear rubellite tourmaline gemstone, exclusive loose faceted tourmalines, Madagascar gemstones shopping

    

   Depth:10.5 mm.

Tourmaline Discovery
   
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- Scale determining the purity of a stone.  -
FL NFL SI1 SI2 MI1
Flaw less Near flaw less Slightly included 1 Slightly included 2 Medium included 1
-------------------------------------------------------------------------------------------------------------------------------------------------------------------
MI2 MI3 VI1 VI2 HI
Medium included 2 Medium included 3 Very included 1 Very included 2 Highly included
 
Hardness: 7 - 7.5
Specific Gravity: 3.0+                          Visual Catalog
Refractive Index: 1.62 - 1.68 Tourmaline data
Chemical Composition: Na(Li,Al)3Al6Si6O18(BO3)3 (OH)4, Sodium Lithium Aluminum Boro-Silicate Hydroxide     Cutting Styles
Crystal Structure: Trigonal   Ask a question 
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