1 Rose Quartz – 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: Rose Quartz

CHATOYANT

CHATOYANT
The three varieties of quartz described here all have a fibrous structure ,with inclusion of crocidolite that cause a “cat’seye”effect known as chatoyancy . This effect is best seen when the stones are displays different colours according to the exact nature of the inclusion .The greyish yellow,semi translucent appearance of quartz cat’s eye is due to inclusions of crocidolite “asbestos”and less commonly ,hornblende .It has a silky lustre .Tiger’s –eye is black with iron oxide staining that give yellow and golden brown stripes ,Hawk’s-eye form when crocidolite changes to quartz ,but the blue-gray or blue green colour of the original remains .
OCCURRENCE:Quarts cat’s-eye coms from Srilanka ,India and Brazil.The most important source of tiger’s-eye is in South Africa ,where it is found in thack slabs ,togather with the less common hawk’s-eye . Chatoyant quartz is also found in Australia and the USA.

REMARK : Chatoyant quartz is always called quartz cat’s-eye to avoid confusion with other chatoyant gems ,particularly chrysoberyl .

INCLUSIONS
Quartz specimens with mineral in clusion are very common and make gemstones .”Rutilated quartz “or “sagenite “,popularly known as venus –hair stone ,is quartz with needle –like rutile crystals . These may be red,black or brassy yellow ,and have a metallic lustre .”Tourmaline quartz “has inclusions of black tourmaline ,which form prismatic or needle –like crystals .Opaque ,metallic yellow inclusions of gold are found in specimens of “gold quartz “.Inclusions of silver may be found within quartz ,often in branch –like dendrites ,and are silvery grey or black.Opaque and metallic .The iron minerals .geothite and pyrite are also found as inclusions .If cut encabochon ,quartz containing goethite may show the cat’s-eye effect .

OCCURRENCE :Quatrz with inclusions is found in Madagascar ,Brazil ,South Africa ,India ,Srilanka Germany and Switzerland .

Rose Quartz

ROSE Quartz
Pink or peach –coloured quartz is called rose quartz is called rose quartz ,amd is mainly used in decorative carvings .its colour is thought to be due to the presence of small amout of titanium .crystals of rose quartz are very rare ;more usually ,massive lumps are found ,which can be carved ,or cut an cabochon or as beads. Transparent material is uncommon ;it is usually cloudy or cracked ,partly because it is so brittle ,Rutile inclusion in rose quartz may produce a star effect when the stone is cut encabochon .
OCCURRENCE: Rose quartz is found in pegamatites .The best material is from Madagascar ,but Brazil produces a greater quantity .Other sites are Scotland ,the former USSR.Colorado (USA),and Spain.
BROWN Quartz
Brown quartz includes quartzof a light brown or dark brown colour ,greyish brown “smoky”quartz ,and the black variety called morion .Brown or smoky quartz from the cairngorm Mountains of scoland is called cairngorm .when irradiated ,colourless quartz may change colour to greyish brown ,suggesting that brown quartz may have been formed by natural radiation within the groun

d . Brown quartz crystals are hexagonal prisms with pyramidal ends ,in which inclusion of the mineral rutile may be present .
OCCURRENCE:Crystals weighing

 

as much as 300kg (650Ib) have been found in Brazil .Other localities include Madagascar ,this swiss Alps ,Colorado (USR),Australia ,and spain .
REMARK: Much of the smoky quartz on the market is in fact irradiated rock crystal .Brown quartz has been confused with andalusite ,axinite and brown tourmaline .