SWISS BLUE TOPAZ STONE

This is a natural Topaz stone ready for setting.They are very well cut. Treated [irradiated] stone with popular pastel blue colour.

Grading VVS

Colour Swiss blue

Cut: Pear

High luster

Weight 9.04 cts

Size 16 x 12 mm app

The stone was irradated in the usa according to current guide lines-It is a permant treatment.

Note: We have good quality blue topaz TREATED rough at our sister site

QUALITY ROUGH

Topaz is commonly associated with silicic igneous rocks of the granite and rhyolite type. It typically crystallizes in granitic pegmatites or in vapor cavities in rhyolite lava flows.

Pure topaz is colorless and transparent but is usually tinted by impurities; typical topaz is wine, straw yellow, pale gray or reddish-orange. It can also be made white, pale green, blue, gold, pink (rare), reddish-yellow or opaque to transparent/translucent.

Orange topaz, also known as precious topaz, is the traditional November birthstone.

Imperial topaz is yellow, pink (rare, if natural) or pink-orange. Brazilian Imperial Topaz can often have a beautiful bright yellow to deep golden brown hue, sometimes even violet. Many brown or pale topazes are treated to make them bright yellow, gold, pink or violet colored. This variety is the most sought-after and highly valued among the topaz gems

T

Treatments-When treated, yellow topaz often becomes reddish-pink. Only stones of a brown-yellow color yield the pink; the pale yellow ones usually turn white. The pink color is stable. Topaz can also be irradiated, turning the stone blue, ranging from a light pure color to very dark almost electric blue AS WITH ALL OUR STOCK YOU MAY RETURN IT FOR A FULL REFUND IF NOT PLEASED . 

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, Fluorite.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