1 Topaz – Gems stone
Pink Color Tourmaline Specimen

Pink Color Tourmaline Specimen

Aquamarine Specimen,Crystal Tourmaline,Green Color Tormaline More »

Blue sapphire gemstone Specimen

Blue sapphire gemstone Specimen

Blue sapphire gemstone Specimen,sapphire crystal Specimen,Tourmaline Specimen,Crystal Tourmaline, More »

Tourmaline Cuts Shapes

Tourmaline Cuts Shapes

Tourmaline Cuts Shapes,Blue sapphire gemstone Specimen,sapphire crystal Specimen,Tourmaline Specimen, More »

watermelon Tourmaline

watermelon Tourmaline

watermelon Tourmaline,Blue sapphire gemstone Specimen,sapphire crystal Specimen,Tourmaline Specimen, More »

Blue sapphire gemstone Specimen

Blue sapphire gemstone Specimen

watermelon Tourmaline,Blue sapphire gemstone Specimen,sapphire crystal Specimen,Tourmaline Specimen, More »

 

Category Archives: Topaz

Topaz Specimen

TOPAZ
COLOUR : Clear,red ,yellow,orange,gray,blue
COMPOSITION :AI2[F2/SiO4] +OH +[Cr,Fe,Mn]
CRYSTAL STRUCTURE :Orthorhombic
HARDNESS :8specific gravity :3.4-3.6
LUSTER: Vitreous
TRANSPARENCY : Transparent
METAPHYSICA:Power,wisdom,healing ,relaxation,initiative ,artistic inspiration,joy,self-realization
OTHER:Aligned with Virgo,Leo,and Aquarius star sign
Topaz occurs in a range of different colours : deep golden yellow topaz (sometimes sherry topaz )and pink topaz are the most valuable ; blue and green stones are also popular .Natural pink stones are rare-most pink topaz is heat –treated yellow material .Much colourless topaz is irradiated and heat-treated to a range of blues, some almost indistinguishable from aquamarine when seen with the naked eye. Some topaz has tear-shaped cavities ,containing a gads bubble or several immiscible (non mixing ) liquids . Other inclusions such as cracks ,streaks ,and veils also occur .Prismatic topaz crystals have a characteristic lozenge-shaped cross-section and striations parallel to their length .Topaz has one perfect cleavage .
OCCURRENCE : Topaz occurs in igeneous rocks such as pegmatites ,granites,and volcanic lavas .It may also be found in alluvial deposits as waterworn pebbles .Localities include Brazil , the USA ,Srilanka, Burma the former USSR,Australia ,Tasmania ,Pakistan,Mexico ,Japan, and Africa,Brazi,Pakistan and Russia are sources of pink topaz .
REMARK : In the 17th century the Braganaza diamond (1,640 carats) in the Portuguese crown was thought to be the largest diamond ever found .This was never confirmed and it is now believed to have been a colourless “topaz “ is thought to be derived from the Sanskrit word tapas ,meaning fire .