1 Dravite (Tourmaline) – 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: Dravite (Tourmaline)

Dravite (Tourmaline)

DRAVITE
Dravite is a very dark colored  (usually brown )from of tourmaline ,rich in magnesium .It is possible to lighten the colour by heat treatment dravite shows strong dichroism ,and should therefor be cut with the table facet parallel to the length to the crystal in order to show a light
more attractive color
OCCURRENCE:Dravite can occure as single crystal ,or as parallel or radiating groups . Brown tourmaline and yellow tourmaline occur togather in the gems gravels of srilanka . It is also found in the usa ,Canada ,mexico,braszil ,and Australia .
REMARK:The “dravite “is drived from the district of drave ,in Australia
ACHROITE
The particularly rare,colourless  stones is a varity of elbaite ,A member of the tourmaline group.It doesnot show the strong dichfore roism characteristic of tourmaline varieties and there can be cut with the table facet either parallel or perpendicular to the length of the  crys
tal. Colourless tourmaline may also be produce by applying heat to light pink tourmalines.
OCCURRENCE :Archroite occured with coloured tourmalines in the pegmatites of madagacar and pala(in California in the usa ).
REMARK: Achroite is named after the Greek word achroos ,meaning “without colour”.