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SEDAGEMS

TOURMALINE BIRTHSTONE FOR OCTOBER.

Stunning green pink stone - THIS IS THE MOST POPULAR COLOUR COMBINATION.

NATURAL UN HEATED

MINED IN BRAZIL

GRADING SI2

Cut Emerald

MOHS SCALE 7-7.5

WEIGHT 1.1 CTS

SIZE 7X 5 X3.7 MM

NOTE THE STONES PHOTO IS BLOWN UP SO YOU SEE THE NATURAL INCLUSIONS BUT WHEN YOU WEAR IT IT WILL LOOK CLEAN AND STUNNING.

Tourmaline is a crystal silicate mineral compounded with elements such as aluminium, iron, magnesium, sodium, lithium, or potassium. Tourmaline gem stones come in a wide variety of colors.Tourmaline has a variety of colors. Usually, iron-rich tourmalines are black to bluish-black to deep brown, while magnesium-rich varieties are brown to yellow, and lithium-rich tourmalines are almost any color: blue, green, red, yellow, pink etc. Rarely, it is colorless. Bi-colored and multicolored crystals are common, reflecting variations of fluid chemistry during crystallisation. Crystals may be green at one end and pink at the other, or green on the outside and pink inside: this type is called watermelon tourmaline. Some forms of tourmaline are dichroic, in that they change color when viewed from different directions.

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