Thus they ll weigh more than the sizes on the chart. Tanzanite s exquisite color poised intriguingly between blue and violet sets it apart from any other gemstone.
Please be aware that images on any web site including this one can not always reflect the true color brilliance of tanzanite or most any other gemstone.
Gemstone tanzanite color chart. The carat weights given for standard gem sizes in the following chart apply to diamonds cut to ideal proportions. Tanzanite is a gemstone that is blue or purple in color. Agate comes in a wide range of colors and when discussing gemstones generally.
Typically gem cutters cut colored gemstones with greater volume than diamonds. The colors of tanzanite. The first color listed is the modifier and the second color listed is the primary color.
Estimating weights for gemstones. Sapphire is really the only example though tanzanite sometimes comes close. Tiffany could have sold the material under the mineralogical name of blue zoisite but they thought the name tanzanite would stimulate customer interest and be easier to market.
The adage color is king applies to tanzanite just as it does to all colored gemstones it is the single most important value factor. Here you will find a comprehensive list of gemstones that we sell here on gem rock auctions. Tanzanite has a unique position among all gemstones because it is a pleochroic gem meaning it displays multidimensional color making it an exceptionally brilliant possession when viewed from 3 different crystallographic directions three different colors can be seen making tanzanite a trichroic material.
In today s market there are literally hundreds of gemstones to choose from. From light sky blues and lilacs through to deep indigos and royal blue. Here is an average gemstone vs top aaa color.
When talking about ruby you hear descriptions like pigeon s blood red to describe the deepest most valuable colors and with sapphire you hear cornflower blue to describe the finest sapphire colors generally from the ancient kashmir deposit. Gia color guidance chart. Other blue gems tend to be a grayish blue spinel benitoite greenish blue blue zircon apatite tourmaline gem silica or a pastel blue aquamarine topaz.
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. Though blue is a more common gem color than red very few gems occur in a pure saturated blue. Clarity clarity refers to any natural flaws and inclusions in a tanzanite.
Made unique by reflecting both blue and violet this mix of colors is called pleochroism tanzanite is formed in a wide range of colors. If you found our chart of semi precious stones useful please leave a comment or let us know. Tanzanite is a trade name that was first used by tiffany and company for gem quality specimens of the mineral zoisite with a blue color.
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