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4678
20

CHAMPAGNE TOPAZ-VIBRANT - 12.80 CTS [S5348]

SKU
寸法(mm)
14.000 x 9.000 x 6.000mm
重さ (CT)
12.800
タイプ
Faceted

SEDA GEMS

SPARKLING CHAMPAGNE TOPAZ

This is a well facatednaturalclean topaz stone which has been irradiated treated to enhance the colour.

Mined in Brazil

Round

Transulant

Grading SI 1

Total weight 12.80 cts app

Size 14 x 9 mm

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.

Topaz has a hardness of 8 on the Mohs scale and is the hardest silicate along with beryl (Aquamarine). The Toughness of Topaz is Fair. Topaz crystallizes in the orthorhombic crystal system, with an “Elongate Prismatic” crystal habit. Pinacoid, multiple domes and orthorhombic pyramid faces produce complex and multifaceted terminations that are well formed. Topaz has a chain-like lattice structure of irregular octahedrons. Topaz has perfect (easy) basal cleavage in one direction (in the plane perpendicular to the c-axis), with a conchoidal fracture, therefor it is a difficult stone to set without fracturing. Topaz has a refractive index of 1.610 to 1.630.

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

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:数量以上のアイテムを含む注文では、:プロバイダーは $12.00 に割引されます
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:数量以上のアイテムを含む注文では、:プロバイダーは $39.00 に割引されます
Registered Shipping $9.00 / :日日 $16.00 / :日日
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:数量以上のアイテムを含む注文では、:プロバイダーは $9.00 に割引されます
世界のその他の地域
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sedagems
sedagems
Hi Welcome to the Sedagems store, Run by Paul Sedawie and specializing in Australian sapphires and gems stones he has collected on his many buying trips world wide. All stock has a money back guarantee as your continued business is our business.
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  • gemarab
    gemarab
    ポジティブ

    Great and clear sapphire, beautiful cut ! Great packaging

  • marcopaulo
    marcopaulo
    ネガティブ

    Not as pictured and underweight by 1.52ct.

  • marcopaulo
    marcopaulo
    ポジティブ

    As pictured but unweight by .14 ct, will accept.

  • js20031
    js20031
    ポジティブ

    AAAA+++ Very Happy! Just like the pic.

監査

この製品は Gemstone Sheriff によって監査され、次のことが判明しました。
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Comments

The Verified Seller has provided accurate and complete information for this gemstone including weight, dimensions and treatments where applicable.

この監査は要求されました:日付
最終更新日:日付

発送詳細

配送:
$16.00 Registered Shipping 経由の日数をカウント
発送元:
Australia

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この出品者は、Australia での取引に 10.00% 税金を追加します。

概要

リストタイプ : Standard
製品番号 : 208020
始まります : 8th November 2024 06:00 pm PST
* すべての価格は:通貨で表示されます