Semi Precious Gems
This Gem of Lord Ganesha is the favoured Gem of the people seeking intellectual powers as well as for those seeking wealth. This calms down the nervous systems and improves the capacity to take decisions. It improves the liquidity and money flow in business and blesses the wearer with liquid assets
Category :: Beryl variety
Molar mass :: 537.50
Color :: Green shades
Mohs scale hardness :: 7.5-8
Luster :: Vitreous
Streak :: White
specific gravity :: Average 2.76
Refractive index :: 1.564–  1.595,1.568–1.602
Birefringence :: 0.0040–0.0070
Chemical    formula :: Be3Al2(SiO3)6
About Emerald Cabochon
Emerald Cabochon : At Gem Selections we have a range of Emerald Cabochon i.e., Panna Cabuchon from Rs. 2100/ Rt to Rs. 31000/ Rt.
You can have a look at these collections and decide what you want as per your requirement and budget.
What ever you buy comes with a Lab Certificate, bill and Guarantee of purity and originality from our company and its promoter Mr. Pankaj Khanna.
Emerald Cabochon is like all coloured gemstone. We can say that there is four type of gems find Color, Cut, Clarity and Crystal. Emerald (Be3Al2Si6O18) is the grass-green type of Beryl. The formation of emerald involves a natural process known as exometamorphism.
traditional gemstone for the astrological signs of Taurus, Cancer and sometimes Gemini. One of the quainter anecdotes on emeralds was by the 16th-century historian Brantôme, who referred to the many impressive emeralds the Spanish under Cortez had brought back to Europe from Latin America.
Normally, in the grading of colored gemstones, color is by far the most important criterion. However, in the grading of emerald, crystal is considered a close second. Both are necessary conditions. A fine emerald must possess not only a pure verdant green hue as described below, but also a high degree of transparency to be considered a top gem.
The Swat emeralds show light red to red through the Chelsea color filter and completely absorb short-wave ultra-violet radiation.
This gives the rock its gemlike green color. Varying amount of iron also alters the color of the rock. It has a hardness of 7.5-8 and a refractive index of 1.57-1.59. However it is not a gem recommended for 'everyday' use since it falls in the category of soft stone.
A chemical analysis shows that chromium (which is the cause of the green of emerald) and iron are prominent constituents in Swat emeralds. The presence of relatively high iron content means that the emeralds from Swat do not show so red a fluresence as some other emeralds as iron acts as a fluresence quencher.
The cut of the stone is also significant. Emerald can have round, pear, oval shapes the emerald cut, that is, octagonal shape is most preferred. Inclusions are almost an accepted fact in emeralds.
Deposits of the stone are also found in other parts of the world such as in Zambia, Zimbabwe, Madagascar and Nigeria. However Columbia and Brazil are the leading producers of emerald today. The mines of Egypt, which supplied emeralds to Cleopatra, are not much into production today. Among the foremost consumers of emerald are USA and Japan who buy 75% of the world's cut emerald.
Color is divided into three components: hue, saturation and tone. the hue must be bright. Gray is the normal saturation modifier or mask found in emerald. A grayish green hue is a dull green.
Brazil has been supplying emerald to the world market since the 1980s. Typical Brazilian emeralds are lighter and yellowish. Emeralds from Zimbabwe are smaller is size and lighter in shade. However the term 'African emerald' is a misnomer. It simply denotes green fluorite.
This Gem of Lord Ganesha is the favoured Gem of the people seeking intellectual powers as well as for those seeking wealth .This calms down the nervous system and improves the capacity to take decisions. It improves the liquidity and money flow in business and blesses the wearer with liquid assets.
The natural beryl used for the faceted seed on which the hydrothermal synthetic overgrowth is grown. The refractive index of the coating varies a little from sample.
In Colombian stones, which constitute a high proportion of fine Emeralds used in Jewellery, the most constant features are flat cavities with upper and lower margins jagged like a coarse saw, containing liquid, a bubble of gas, and a little cube of rock salt.
Emeralds from the Sandawana emerald mine in Zimbabwe have played quite an important role in the trade since their discovery in 1956. These are rich in chromium and thus a very deep and vivid green, which seen at its best in small stones.
Dark Green Emeralds have recently emanated from Pakistan, and these contain rather indeterminate inclusions, along which flakes of mika and small crystals of phenakite and dolomite could be recognized.
Siberian Emeralds or more commonly known as Russian Emerald is a development of thin, cavities parallel to the basal plane. Silvery luster by reflected light, but in some directions may appear black, due to total reflections. In Transvaal emeralds mica is usually a major inclusion, while in Indian emeralds are found hexagonal cavities.
Emeralds from the Ural mountains Siberian or Russian emeralds have quite a different occurrence, and this is reflected in their inclusion. Flakes of mica may be seen often broken, but the most distinctive features are blades of green actinolite cracks across. Siberian Emeralds is a development of thin, disc like cavities parallel to the basal plane. These show a silvery luster by reflected light, but in some directions may appear black, due total reflection.
The inclusions are mainly mica and liquid-filled cavities. At their best, the colour of these Emeralds is said to resemble that of stones from Sandawana and Colombia.