1 Tourmaline – Gems stone
Pink Color Tourmaline Specimen

Pink Color Tourmaline Specimen

Beautiful Natural Golden Colour Topaz Specimen From Pakistan 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: Tourmaline

WATERMELON

Tourmaline crystal with a pink centre and a green rim ,or vice-versa ,are called watermelon tourmaline ,because their colouring is similar to the pink flesh and green rind of a watermelon.Many other tourmalines are made up of two or more colours ,individual crystals containing up to 15 different colours or shades .
OCCURRENCE : Watermelon tourmaline is found in southafrica ,East Africa , Brazil ,and in many other localities
REMARK :Parti-and multicoloured tourmaline is carved or cut and polished different colours to best effect .
SCHORL
Schorl is the black ,iron –rich form of tourmaline ,and is very common ,The opaque ,prismatic crystal may be several metres in length .OCCURRENCE:Found  in pigmatites .
REMARK:During the Victorian era ,black tourmaline was widly use for mourning jewerllery , but today it has little ,if any ,valu as a gemstone
GREEN AND YELLOW
Yellow- green is the most common of all tourmaline colour varieties ,but emerale –green is much rare and more valueable.indeed ,until the 8th century it was often confuced with emeraled .
OCCURRENCE:Emerald- green stones are found in Brazil ,Tanzania,and Namibia ,fibrous yellow material occur in Srilanka

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”.