A gemstone or gem is a piece of mineral crystal, which, in cut and polished form,
is used to .... Each laboratory has its own methodology to evaluate gemstones. ...
Even the same gemstone can occur ...
When buying sapphire, you should know how to evaluate the quality of the stone
to ... The most prized color is royal blue, which is in the middle of the scale.
The sapphire should be reasonably clean when viewed with the naked eye. Too
many inclusions will make the stone less clear and also detract from its color.
How to evaluate colored gemstones: ... the padparadscha, the rhodolite or
cornflower blue sapphire which are characterized by the combination of hue and
Diamond, ruby, sapphire, emerald, and topaz are all central to a jeweler's ...
Unfortunately, there is a paradox with evaluating colored stones in that often
Colors. Sapphires come in all ranges of colors from blue to black to colorless and
all .... The second consideration in evaluating a blue sapphire is sheer beauty.
The most important thing when selecting a colored gemstones is to choose a ....
Our guides shows you step-by-step how to evaluate sapphire and settings in ...
Too Dark; Bad Dichroism, or a Closed C-axis; Bad Color Modifiers ... In stones
that have directional color (Sunstone, Iolite, Sapphire, ...
www.gemcollector.com/en-us/learning-library/gemstone/blue sapphire gemstone/
The most attractive Sapphires are those that are a pure blue. ... The key
evaluation criteria for Sapphire, as with all coloured gems, remain the vividness
of its ...
Mention sapphire and most people will probably imagine blue colored gems. ...
on a sapphire buying adventure, learn how to evaluate a sapphire's quality and ...