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Type 1 Gemstones |
The following gemstones are typically inclusion free, even minor inclusions detract from their value. |
Diamond, Amethyst, Beryls(Aquamarine,Morganite), Citrine, Smoky Quartz, topaz, Chrysoberyl, Kunzite, Tanzanite, green Tourmaline, and Blue Zircon |
IF |
Internally flawless under extreme magnification (Very rare) |
F |
Flawless |
VVS |
Minute inclusions under 10x; invisible to the unaided eye |
VS |
Minor inclusions under 10x; usually invisible to the unaided eye |
SI1 |
Noticeable inclusions under 10x; usually visible to the unaided eye |
SI2 |
Noticeable inclusions under 10x; usually quite visible to the unaided eye |
I1 |
prominent- moderate affect on appearance or durability |
I2 |
prominent - severe affect on appearance or durability |
I3 |
prominent- severe affect on beauty, transparency or durability |
Type 2 Gemstones |
Gemstones that normally have small inclusions that do not detract from value. |
Alexandrite, Andalusite, Iolite, Peridot, Rhodolite, Ruby, Sapphire, Spinel, Tourmaline, Garnet, Amethyst, Red Zircon, Tsavorite; Blue, Orange, Purple, Yellow and Parti-colored Tourmaline |
F |
Flawless |
VVS |
Minor inclusions under 10x; usually invisible to the unaided eye |
VS |
Noticeable inclusions under 10x; often invisible to the unaided eye |
SI1 |
Obvious inclusions under 10x; visible to the unaided eye |
SI2 |
Obvious inclusions under 10x; very apparent to the unaided eye |
I1 |
prominent - moderate affect on appearance or durability |
I2 |
prominent - severe affect on appearance or durability |
I3 |
prominent - severe affect on beauty, transparency or durability |