Testing Hardness , Toughness and Stability of Gemstones

How Gemstones durability is analysed?  Durability of gemstones helps in gems identification of particular gemstones through its particular characteristics or resistance power in particular environment in its internal structure or externally.  There are many experiments done on mineral stones and their results tell us about how much stone is hard or tough. There are normally following […]

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Testing of Gemstones for Identification through Polariscope

A polariscope is an instrument in gemology for testing of gems with single refraction, double refraction, Poly-crystalline material or ADR. Example HTML page Let us first tell you what is Polariscope? and how test is done?. The name of Polar – Scope itself shows or describes that a method to see the stones from poles or axis […]

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Identification of Gems – Calcite dichroscope

Observing Gemstone colours through Calcite Dichroscope. A dichroscope is a handheld tool for identifying or looking into the different colors or shades of a pleochroic piece of gemstones. It helps any gemologist or gem cutter in judging gemstone before cutting or identifying any gem.   Calcite Dichroscope Calcite Dichroscope is used to observe dichroic gems and […]

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What is Luster Called in Gemstones?

Luster is referred to the light reflected from the surface of gems. In some gemstones, there is internal light reflections also such as facet stones with transparency. However internal reflection of light is not called luster. It is called brilliance. Luster is the way a mineral either shines or does not shine. Gems and minerals can […]

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How to Photograph Gemstones and Minerals?

Photography of gemstones is an art . They have highly reflective surfaces that can reflect light back into the camera lens overexposing the facet and frequently burn into adjacent facets as well. Gemstones also have internal brilliance that act in much the same way as the surface reflections.  They always need specific light and background […]

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How Gemstones Get Their Specific Colours?

Gemstones give very beautiful colour variety which attracts to the eyes of buyers. If people like the particular gemstones, it is because of their colour. Specific colour is known as gem colour. So, how the gemstones get their specific colour and how they turn into that particular colour? Here are some points discussed under below:- […]

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Lapidary / Types of Gemstone Cutting

Lapidary is a kind of shaping, working, and cutting of stones. The word is related and referred to small gemstones. Lapidary or gem cutting have been used 1000s years old. It is the way to transform rough gems / crystals into splendid gemstones. It unlocks the luster and shining of the stone. There are following […]

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How to test most valuable gem ?

10 Simple Tests For Identifying Minerals

Minerals have a variety of physical and chemicals properties that can be evaluated using simple tests. The under mentioned checking method can tell us about mineral with simple laboratory tools and equipment. However, in some cases some tests can be dangerous for minerals and gemstones. Hardness Mohs Hardness Scale Magnetism Color Luster Streak Fluorescence Crystal Shape […]

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