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Natural Tanzanite ( Weight 4.52 Cts. ) Violetish Blue Colour Treasure Bkk

存貨單位
202405088424
尺寸(毫米)
13.760 x 8.220 x 5.700mm
重量 (cts)
4.520
Treatment
Heat Treatment
Shape
Pear
類型
Faceted
Clarity
N/A
Certified Gemstones
是的
顏色

Certificate : IGS ( International Gem Switlab )

Report Date:08 May 2024

Report No:GS202405088424

Object :Loose Gemstone

Identification :NATURAL TANZANITE

Colour(Hue) :Violetish Blue

Hardness :6.5

Shape :Pear Faceted Cut

No. of Stone :1 pcs.

Measurement :13.76 mm x 8.22 mm x 5.70 mm

Weight :4.52 cts.

Origin :Tanzania

Origin Note :Gemological testing revealed characteristics of those consistent with the below origin

Comments:Heated

Additional Comment:*Antique Style*

============================================================

Tanzanite's appearance is influenced greatly by its pleochroism, which is the ability of a gemstone to show different colors when viewed in different crystal directions. Tanzanite's pleochroism was documented in scientific papers not long after its discovery. In 1969, American Mineralogist described the gem's pleochroic colors as `red-violet, deep blue, and yellow green.' Today, most gems are heat treated, which removes or reduces the yellow green or brownish pleochroic color, maximizing the blue and violet.

Top-quality tanzanite can be violetish blue --similar to a fine sapphire color --or a unique, predominately violet hue all its own. Some stones might also appear more purplish depending on how the cutter chooses to orient the fashioned gem. Both the violet and blue pleochroic colors are readily visible in a fashioned stone when it is gently rocked and tilted. This means that every tanzanite is a blend of these pleochroic colors. The exact face-up color depends on the inherent color of the original rough, its size, the pleochroic colors the cutter favors when they orient the fashioned stone, and the light the finished gem is viewed under. Cool lighting --like daylight equivalent fluorescent --will emphasize tanzanite's blue, while warm lighting --like incandescent --will make it appear more violet-to-purple.

Just like other colored gemstones, vivid strongly-colored tanzanites are highly sought after. Lighter toned pastel hues are more plentiful and affordable than vivid colors and have a subtle appeal of their own.

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treasurebkk
treasurebkk
Treasure of Shahrazad is a luxury jewellery brand renowned for crafting art deco-style trends in gleaming diamonds and gemstones. Our jewellers and designers reinvent classic natural stones in contemporary styles that elevate natural gemstones to wearable works of art, putting our customers in the limelight. Our jewellers combine the finest materials with stunning design to create something truly remarkable because we are committed to quality, care, and making one-of-a-kind jewels that everyone can enjoy.
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  • dannybiceps
    dannybiceps
    積極的

    Really speedy service, highly recommend

  • olsonetworks
    olsonetworks
    積極的

    Just arrived, good shipping time and quality exactly as described. Beautiful pair of emeralds

  • deengee
    deengee
    積極的

    Emm beautiful item.. I m satisfied

  • deengee
    deengee
    積極的

    Emm beautiful item.. I m satisfied

審計

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送貨細節

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概述

列表類型 : Standard
產品編號 : 2520279
開始 : 14th November 2024 12:34 am PST
* 所有價格均以:貨幣為單位