Another issue is the user needs to know what colors to look for. The basic gemological tools are not difficult to learn to use. You don t need fancy tools to analyse the stone. But color alone should not be a property to study because many times color can lead to wrong identification. Here you will find a comprehensive list of gemstones that we sell here on gem rock auctions.
Quality factors know in detail about the four essential characteristics that help us judge the quality of a gemstone. When you find a stone feel the surface to make sure it s smooth which is a sign that it s a gemstone. Have a look at the different aspects of the gem such as the colour clarity size hue tone and cut to narrow down your options. Just a loup and light will help you to examine the gem thoroughly. Although rubies and spinels are now identified gemologically as two distinct gem species some stones historically classed as rubies have actually proven to be spinels.
They include the simple 10x loupe a powerful tool in the hands of an expert the refractometer for measuring refractive index the polariscope for identifying singly and doubly refractive gems and a scale accurate to the 1 100th of a carat for measuring specific gravity. Stones characterized as colorless should not have any tinge of color in them while colored stones should be dark and deep colored. Darker the color better will be the quality. Then consult a streak test chart to identify the gemstone based on the color of its streak. However at first glance a red spinel can still be confused with a ruby.
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So basically those four tools can help to identify gemstones out in the field. A very small tool dichroscope will show two small blocks at the end of the tube as looking into a stone and show two different colors. To identify gemstones get an identification chart you can reference. Perform the test again using a different part of the stone to confirm the streak test. Gemstones are precious or semi precious stones with aesthetical and monetary values skillfully cut and polished to create stunning jewelry.Gemselect s list of precious semi precious gemstones. With over 130 gem varieties our gemstone index will help you find the perfect colored stone for your jewelry crystal healing needs. Examine the streak to determine its color and identify the gemstone. The list of gemstones below will discuss the difference between a precious stone and a semi precious stone as well as guide you to where the gemstone treatments are discussed. Look closely at the streak on the plate and try to identify what color it is.
Guide to precious semi precious color gemstones. The stone should not be malleable if it is a true gemstone. In today s market there are literally hundreds of gemstones to choose from. Guide to precious semi precious color gemstones. Gemselect s list of precious semi precious gemstones.
In today s market there are literally hundreds of gemstones to choose from. So basically those four tools can help to identify gemstones out in the field. They include the simple 10x loupe a powerful tool in the hands of an expert the refractometer for measuring refractive index the polariscope for identifying singly and doubly refractive gems and a scale accurate to the 1 100th of a carat for measuring specific gravity. Quality factors know in detail about the four essential characteristics that help us judge the quality of a gemstone. Another issue is the user needs to know what colors to look for.
