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Hue means its basic coloration. Tone is the term used to denote the lightness or darkness of the hue. There are 11 tones, 0 to 10, with 0 being colorless and 10 being the darkest. Saturation is the strength of a hue and is considered to be the most important factor in grading tanzanite by most gemological professionals. The lower levels, 1, 2 and 3 are of warm colors like red, orange or yellow, while level 5 is strong and level 6 is vivid or rather over-colored.

Hue means its basic coloration. Tone is the term used to denote the lightness or darkness of the hue. There are 11 tones, 0 to 10, with 0 being colorless and 10 being the darkest. Saturation is the strength of a hue and is considered to be the most important factor in grading tanzanite by most gemological professionals. The lower levels, 1, 2 and 3 are of warm colors like red, orange or yellow, while level 5 is strong and level 6 is vivid or rather over-colored.

Gemstone Match Up

Gemstone Match Up

purple spinel

purple spinel

Just one please - Tanzanites @TheDiamondWorks

Just one please - Tanzanites @TheDiamondWorks

Bright pink tourmaline - 78.41 ct.

Bright pink tourmaline - 78.41 ct.

Gems!

Gems!

Amethyst from Brazil

Amethyst from Brazil

Killer Kunzite, 18 carats, flawless and amazingly intense color.

Killer Kunzite, 18 carats, flawless and amazingly intense color.

Le Blue Diamond en vente chez Christie's Genève http://www.vogue.fr/joaillerie/le-bijou-du-jour/diaporama/le-blue-diamond-christie-s-geneve-2014/18668

Le Blue Diamond

Le Blue Diamond en vente chez Christie's Genève http://www.vogue.fr/joaillerie/le-bijou-du-jour/diaporama/le-blue-diamond-christie-s-geneve-2014/18668

Gem Class: #Gemstone #Cuts

Gem Class: #Gemstone #Cuts

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