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