Glittering Stones

Semi precious stones » Quartz

Semi Precious Stone Quartz

Quartz is amongst one of the most common and precious minerals in the Earth's continental crust. It has a hexagonal crystal structure made of the trigonal crystallized silica (silicon dioxide, SiO2), with a hardness of 8 on the Mohs scale. Density is 2.66. The typical shape is a six-sided prism, which ends in six-sided pyramids, although these are often twinned, distorted, and so massive that only part of the shape is apparent from a mined specimen. Additionally it has bed is a common form, particularly for gems varieties such as amethyst, where the crystals actually grow up from a matrix and thus only one termination pyramid is present. A quartz geode consists of a hollow rock (usually with an approximately spherical shape) with a core lined with a bed of the crystals.

Quartz

Historical Facts of Quartz

Refractive Index

1.544 - 1.553

Chemical Composition

SiO2

Hardness

7

Density

2.65

Crystal Group

Trigonal

Ocurrence

Every continent



Gemstone Quartz Jewlery

Quartz Bracelet
Quartz Earrings
Quartz Necklace
Quartz Rings

NOVEMBER BIRTHSTONE - CITRINE


Citrine Gemstone

COMMEMORATIVE EVENT - 13th Anniversary
KEYWORDS - Success, Abundance, Personal Power
ALSO KNOWN AS - Merchant's stone, Success stone
COLORS - Pale yellow to brown
OCCURRENCE - Brazil
COLOR ZONING - Tiger stripes or Zebra stripes

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