The 2 hues the GIA recognize in Tanzanite are blue and violet. Hence, if a Tanzanite is predominately blue, with the table oriented on the blue axis (Tanzanite is trichroic so the optic axis can be blue or violet - more on this in our article on Trichroism in Tanzanite, then it is described as having a dominant blue Hue with a violet modifier. Faceted blue tanzanite: This violetish blue tanzanite is an exceptional faceted oval weighing 8.14 carats and measuring 14.4 x 10.5 x 7.6 millimeters in size. On the basis of its color and clarity, it would be rated in the top 1% of all tanzanite ever produced.
Tanzanite Grading vlr.eng.br
This color grading system and chart was developed by the Tanzanite Foundation, www.tanzanitefoundation.org The color quality is based on the degree of saturation with greater value placed on gems with greater saturation. The first color listed is the modifier and the second color listed is the primary color. The adage "color is king" applies to Tanzanite, just as it does to all colored gemstones. It is the single most important value factor. Due to its unique crystal structure, tanzanite is one of only two known gemstones to clearly show two colors at once. As a result, a tanzanite can never be purely blue or purely violet. vB " violetish- Blue" means that the tanzanite's dominant color is Blue, and the secondary color is Violet. Overview About Tanzanite View Gallery Found in just one place on earth, tanzanite is a relatively recent discovery. Tiffany & Co named this blue-violet variety of zoisite in honor of Tanzania, where it was first unearthed in 1967.
Color Charts Singhania & Sohn
What Color is Tanzanite: Pink, Yellow, Green, Blue & Purple Watch on Video Transcription Hi, I'm Steve Moriarty from tanzanitejewelrydesigns.com. And we're also a jeweler on the Square in Crown Point, Indiana, known as Moriarty's Gem Art. Today, I'd like to discuss with you some of the colors of Tanzanite. Tanzanite Clarity Grading - How to Judge Clarity in Tanzanite Unlike Diamonds, colored stones do not have a universally accepted clarity grading system. We take a look at some of the most widely used systems. Antony Zagoritis GIA Graduate Gemologist ICA Ambassador to Kenya With Tanzanite clarity grading, common sense prevails. If you are a connoisseur of fine gems, you'll probably be most interested in obtaining and owning the rarest grade of tanzanite - often called "investment tanzanite", which makes up less than 1% of all production and is graded 6/6. So how does the GIA Colored Stone Grading System work? It breaks down gem color into three components: Tanzanite usually has to be larger than five carats to reach a deep saturated violetish blue or bluish violet color. Small accent stones less than two carats in size are commonly a lighter color. 2. Consider a protective setting. With a hardness of 6 to 7, tanzanite is softer than many gems.
Understanding the GIA Color Grading Process For Tanzanite Tanzanite Direct
Conclusion: The Kaleidoscope of Tanzanite Colors. In conclusion, tanzanite's colors encompass a captivating spectrum that ranges from the deepest blues to enchanting violets and even rare greens and pinks. The beauty of tanzanite is a result of various factors, including the presence of vanadium, trichroism, and the gem's geological formation. So, What Causes the Tanzanite's Color? The tanzanite is one of the only gemstones in the world that is trichroic in nature. This essentially means that it features three colors at the same time - blue, purple and red (Note: Only hints of red are visible in the gem).
Tanzanite is a stunning pinkish blue gemstone discovered in Tanzania 50 years ago. Tanzanite is famed for its pleochroism - the ability to show more than one colour in different directions through the stone - in this case, blue is the primary colour, with beautiful flashes of pink. But how can you tell if you're buying a great piece? The most valuable color is a rich violetish blue with hints of a pleochroic red. Regardless of its pleochroism, vivid Tanzanite is more sought after than paler gems. Additionally, blue or bluish-violet tends to be popular. To get this color, most Tanzanite is heat treated as it is naturally brownish.
Tanzanite Color Grading So Many Systems, Which to Trust?
Color Tanzanite is a pleochroic gem, which means it can show different colors when viewed in different crystal directions. This makes cutting a crucial element in determining the color the consumer sees when the stone is cut and set in jewelry. Tanzanite's color can be a very bright, intense blue. Medium dark colors are the ideal. Custom cuts add value. As always, size and clarity have a strong effect on prices. Large clean rough is extremely scare. Ultra-rare cat's eye tanzanites are highly prized. Violetish blue cat's eye tanzanite with a very sharp eye, 0.79 cts, 5 mm, Tanzania. © The Gem Trader. Used with permission.
