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History & Introduction


From the Italian word ‘a ventura’ the name Aventurine came, which means ‘by chance’. Actually, Aventurine gemstone was discovered accidentally by Venetian glass workers in the 18th century. Initially, it was called as Goldstone, which is a general synthetic stone for aventurine as well as sunstone. Due to the coarse flecks of copper the Goldstone is discerned from the other two minerals visually. The properties of the aventurine gemstone is to get rid of one’s anxiety and fear and similarly green gemstone makes the muscles and blood stronger.

The look of the Aventurine stones are shiny Alumina silicate mineral rock that comes from the family of changing compositions. The look of Aventurine gems are soft green semi translucent color, which carries a dull luster to it and consist of mica flecks. Such stones are available in different colors for example orange, reddish brown, yellow and silver. One more character of this stone is that if it is put in the direct sunlight this will cause it to fade and lose its color, therefore the stone is kept more in a dark area.

Aventurine control emotions and many other things. These small crystal stones are able to reflect the light and show a huge range of colors, which is according to the aspect of the inclusion. Aventurine is a higher graded material used in tool-making as it possess perfect hardness and also its isotropic brittleness that allows to get into relatively easy shape.

Recognize - Naturally the Aventurine is distinguished as well as recognized by color and the presence of 'aventurescence'. The properties of Aventurine stone includes luster, different existence, hardness, refractive index, conchoidal fracture and specific gravity. Though Aventurine gemstone is confused easily with stones like malachite and jade, still with the appearance, as they are softer as compared to aventurine quartz. The term 'Indian jade' many times is applied incorrectly when referring to Aventurine.

Usages - This stone is used as a minor stone for jewelry, as cabochons or beads for the purpose of necklaces and bracelets and figurines to make fashion jewelry. It is used as stone for ornamental purposes for carvings and bookends and also famous as aquarium stone. The gemstone is created to figurines and making the finest jewelry.

Availability - Aventurine quartz is available in many countries across the globe. The main deposits are found to places like Austria, Brazil, India, Chile, Russia and Tanzania. The green and blue-green aventurine comes from India. Whereas the creamy white, grey and orange are sourced from Russia, Chile and Spain.

Buying Guide

Color - Aventurine is most often considered as the green kind of quartz, however is available naturally variety of other colors, in addition to yellow, red, brown, peach and blue. Other colors are tend to be rare as gemstones because they do not often occur in gem-quality. The kind with hematite inclusions are typically red-brown or gold-brown and those included with goethite will mainly come in greenish brown shade. Muscovite mica presence are most common that results in silvery green or blue colored sheen. Naturally aventurine stone seems to be little banded with light and dark color zones.

Clarity and Lustre - The clarity levels of aventurine quartz arrays from a little translucent to opaque. Specimens that are opaque are mainly the result of over-abundant fuchsite inclusions. Aventurine quartz consist of vitreous luster when cut and polished, however because of its rough state it shows a very grainy in texture.

Cut and Shape - Aventurine always gets en cabochon cut. It is even commonly cut or carved into ornamental objects giving the shape of animals or various natural figures. It is even cut into drilled gemstone beads. Shapes and cuts are mainly the traditional ovals, rounds, cushions and different types of fancy shapes like pears, trillions and hearts.

Treatment - In any methods the aventurine stone is either not typically treated or enhanced. There are imitation and artificial materials available to replicate aventurine like the Italian glass known as goldstone is one of commonly used imitation.

Gemological Characteristics:

Chemical Formula Si02, Silicon dioxide
Crystal Structure Trigonal, massive
Colour Green, red-brown, gold-brown, aventurescent
Hardness 7
Refractive Index 1.544 - 1.553
Density 2.64 - 2.69
Cleavage None
Transparency Translucent to opaque
Double Refraction / Birefringence 0.009
Lustre Dull, vitreous
Fluorescence Green aventurine: reddish
Mineral Class Quartz / Chalcedony

Classification:

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