Agate Gemstone 19.72ct India
This Agate is natural gemstone which is Multicolour , it’s Originates from India and it’s exact weight is 19.72ct the measurements are 21.98×15.09×7.18mm, the shape and cut of this stone is Oval Cabochon. It’s graded Translucent and clarity is good. This 19.72ct Multicolour Honey Brown Natural Agate Gem is available for ready to ship anywhere in the world. You can also select Certification and shipment method as optional.
|Species||Natural Agate Stone|
Agate Gemstone 19.72ct
Properties Of Agate Stone
Chemical Composition: SiO2 (Quartz) + impurities
Hardness: 6.5 – 7
Specific Gravity (Density): 2.58 – 2.64
Refractive Index: 1.530 – 1.540
About Agate Stone
Agate was called for the Achates River, Acate, Ragusa Province, Sicily, Italy by Theophrastus, a Greek philosopher and naturalist, who discovered the rock along the coast associated with river Achates sometime between the 4th and centuries which are 3rd. This river is now called the Dirillo river and agates that are colourful other Chalcedonies can nevertheless be discovered there.
Agate is a distinctly banded variety of Chalcedony which is really a number of Quartz. Chalcedony is a translucent variety of cryptocrystalline, or fine-grained, Quartz with a microstructure that is fibrous. Agate is characterised by its concentric (having the centre that is exact same axis) banding which may be fairly easy or wildly patterned and often vibrant coloured by many different types of impurities. Agate has a variety that is many according to colours, locations and patterns. Several of the most varieties that are common Blue Lace Agate, Botswana Agate, Brecciated Agate, Crazy Lace Agate, Fairburn Agate, Fortification Agate, Laguna Agate, Lake Superior Agate, Mexican Lace Agate, Nipomo Agate, Pigeon Blood Agate and Plume Agate.
Chalcedony includes subvarieties that are many as the numerous varieties of Agate, Binghamite, Bloodstone, Carnelian, Chrysoprase, Onyx, Pietersite, Petrified Wood, Sard and Sardonyx. When Chalcedony has concentrically banded the subvariety calls it name Agate. It really is called by the subvariety name Onyx when it’s in flat layers or bands of black coloured and white. It is known as by the subvariety name Sardonyx whenever it is in flat layers or bands of light and dark shades of reds, browns and white.
Many non-banded forms of Chalcedony – such as Moss Agate, are usually mistakenly called ‘Agates’. Real Agate is concentrically banded. Included and mottled chalcedonies are more properly simply called ‘Chalcedony.’ Petrified Wood (agatized timber) could be the name directed at fossil lumber where the replacement of the timber is by Chalcedony, but the banding in this situation is due to the wood framework or growth rings – maybe not concentric deposition of the Chalcedony – together with the material is Chalcedony, not real Agate.