Peridot is generally eye clean to very slightly included. Peridot usually
undergoes no form of enhancement to increase its clarity.
Clarity is a subjective term,
however the following is how we describe clarity:
Opaque: the gemstone will not transmit light through it.
Translucent, or cloudy:
the gemstone transmits light, but you cannot see clearly through it.
Heavily Included: the gemstone is transparent, but the gemstone is littered with inclusions, which are very visible without
magnification.
Moderately Included: the gemstone is transparent, but there are several inclusions, which are
visible without magnification.
Slightly Included: the gemstone has some very minor inclusions, which may be visible without
magnification.
Very Slightly Included (Eye-Clean):
the gemstone has some very minor inclusions that are not readily visible
without magnification. Some Inclusions may be visible without
magnification once you see them under magnification and know
exactly where to look.
Very Very Slightly Included:
the gemstone has some very very minor inclusions which are difficult to see
under magnification.
Loupe Clean (Clean): no
inclusions were seen using 10x magnification. However the gemstone was not examined microscopically. The gemstone may be internally flawless or flawless.
Internally Flawless: the gemstone was examined under a microscope of at least 40x magnification,
and no inclusions were seen. The gemstone has some external blemishes.
Flawless: the gemstone was examined under a microscope of at least 40x magnification
and no inclusions were seen and the gemstone has no external blemishes.
The measure of visibility through
a Peridot is known as its transparency. It is an often-overlooked characteristic
when discussing Peridots. Peridots can sometimes be very lightly
included, most commercial quality ranges from transparent to
transclucent.
Transparency is designated
as follows:
• Transparent - objects look clear through the gemstone.
These gems boast superb brilliancy in spite of any inclusions
they may contain.
• Semitransparent - objects appear somewhat hazy or
unclear through the gemstone.
• Translucent - objects are hard to see through the gemstone.
Light can pass all the way through, but it is fairly
diffused.
• Semi-translucent or semi-opaque - a small fraction
of light passes through the gemstone
• Opaque - almost no light passes through the gemstone.
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