search
  • 登录
    注册
  • 只提供英语客户支持

    免费通话 - 仅限美国和加拿大:
    1-800-464-1640

    国际:
    +66-39303404

  • Change Language
  • USD

Tremendous Topaz Stones - Largest Faceted Gemstone in the World

A Large Swiss Blue Topaz Gemstone
A Large Swiss Blue Topaz Gemstone

Topaz is a beautiful gem type that is one of the most popular jewelry gemstones, especially blue topaz. It also occurs in various other colors and one of the amazing things about topaz is that its crystals can grow to enormous sizes. Deposits of topaz can be found all over the world, but some regions seem to produce larger crystals than others. Notably, the Minas Gerais area of Brazil has brought forth some of the largest and most incredible topaz specimens ever known.

Minas Gerais is the fourth-largest state in Brazil and the second-most populous. Its Portuguese name means "general mines", and this is extremely fitting, since mining has taken place here since the 1700s. However, Minas Gerais was not first known for topaz; it was gold which was mined back in the days of Portuguese colonialism. The local architecture, Barroco Mineiro reflects this period with its Baroque-style golden grandeur. Later, some diamonds were mined in Minas Gerais, and then colored gemstones, which continue to be mined there today, including emerald, aquamarine, tourmaline, chrysoberyl, amethyst, kunzite and topaz.

One of the superlative specimens from Minas Gerais is a giant gemstone that weighs over 20,000 carats and took a year for prizewinning lapidarist, Richard Homer to cut in 1987. The blue topaz gem is named the Adiël Topaz and is displayed in the Field Museum of Natural History in Chicago. Another stone that is among the largest faceted blue topaz gems weighs 9,381 carats and is exhibited in the Natural History Museum of London, England. The oval, deep blue topaz is called the Ostro Topaz after the family that owns it, the Ostros. Its British discoverer, Max Ostro, found the stone during his travels around 30 years ago and his son Maurice kindly loaned the Ostro Stone to the London museum on a permanent basis so that members of the public can marvel at it. A gemstone listed on eBay in 2007 was advertised as the world's largest blue topaz weighing 26,100 carats, but this has not yet been officially verified.

The Marbella Topaz
The Marbella Topaz

The Marbella Topaz is another one of the world's largest faceted blue topaz gems at 8,225 carats. It is also a blue, oval gemstone from Minas Gerais and belongs to the Spanish Programa Royal Collection. This is an extensive collection of various gemstones, including some of the largest topaz stones in the world. In the same collection is the "Lua de Maraba" Topaz; the second-largest faceted topaz in the world at 25,250 carats. It is a grayish stone with an octagonal cut.

An additional big blue topaz weighs 7,033 carats. It is the shape of an American football and is displayed in the Smithsonian National Museum of Natural History in Washington D.C., USA. Another astounding offering from Minas Gerais is a pale blue topaz gemstone known as the Brazilian Princess Topaz. The flawless gem weighs 21,327 carats and was loaned to the Smithsonian Institution. Such blue topaz gemstones are gigantic, but even larger faceted topaz stones can be found in other colors, especially yellowish-brown. The Smithsonian proudly displays a golden topaz sphere of 12,555 carats. Yet, this pales in comparison with a stone in the same collection. One of the largest faceted gems in the world is called the American Golden Topaz; a yellowish-brown topaz which weighs in at 22,892.5 carats. Another marvel from Minas Gerais, the cushion-shaped American Golden Topaz took two years to finish its 172 facets.

The El Dorado Topaz; The World's Largest Faceted Gemstone
The El Dorado Topaz; The World's Largest Faceted Gemstone

Last, but certainly not least, is The "El-Dorado Topaz". When discovered in 1984, this yellowish-brown monster weighed around 36 kg. After being faceted into a perfect emerald cut and polished, the El-Dorado Topaz was reduced to 31,000 carats, which is equal to 6.2 kg. Although its weight was significantly reduced, the El-Dorado Topaz remains the largest faceted gemstone in the world. It is in the Spanish Programa Royal Collection in Madrid, Spain where it can be admired by visitors.

As can be imagined, all giant gemstones, including the ones mentioned above begin as even larger crystals, such as one huge topaz crystal found which weighed 271 kg. When gemstones are faceted, often times a great deal of the rough material is lost. However, this is a necessary sacrifice in order to produce symmetrical, super-sized gemstones that will be admired by all who see them. Unlike their smaller counterparts, enormous gemstones are not fashioned into jewelry, but these giants of Minas Gerais stand as artistic wonders of nature.

  • 首次发布于: October-03-2016
  • 最后更新于:: June-07-2018
  • © 2005-2021 GemSelect.com版权所有。
    未经GemSelect.com(SETT Company Ltd.)的书面同意,严格禁止复制(文字或图形)。.
More Shapes
人气宝石
  • 蓝宝石
  • 祖母绿
  • 红宝石
  • 海蓝宝
  • 锆石
  • 蛋白石
  • 黄玉
  • 碧玺
  • 石榴石
  • 紫水晶
  • 黄水晶
  • 坦桑黝帘石
全部宝石 (142)
C D G H N P Q S
  • Cat's Eye Opal
  • Druzy Amethyst
  • Grandidierite
  • Hyalite Opal
  • Nuummite
  • Pyrite
  • Quartz With Marcasite
  • Scolecite
  • Spectrolite
  • 中长石拉长
  • 卢比莱碧玺
  • 变色宝石
  • 变色水铝石
  • 变色石榴石
  • 变色萤石
  • 变色蓝宝石
  • 坦桑黝帘石
  • 堇青石
  • 天河石
  • 孔雀石
  • 尖晶石
  • 巧克力蛋白石
  • 帝王黄玉
  • 异极矿晶簇
  • 彩虹月长石
  • 彩虹黄铁矿
  • 彼得石
  • 拉利玛
  • 拉长石
  • 摩西西
  • 斑彩石
  • 斑晶蛋白石
  • 斜硅镁石
  • 方柱石
  • 方解石
  • 方钠石
  • 日光石
  • 星光宝石
  • 星光日长石
  • 星光月长石
  • 星光柠檬石英
  • 星光石榴石
  • 星光粉晶
  • 星光红宝石
  • 星光蓝宝石
  • 星光透辉石
  • 月光石猫眼
  • 月长石
  • 枝状玛瑙
  • 查罗石
  • 榍石
  • 橄榄石
  • 沙弗莱石榴石
  • 海蓝宝
  • 火玛瑙
  • 火蛋白石
  • 烟晶
  • 猫眼宝石
  • 猫眼方柱石
  • 猫眼海蓝宝石
  • 猫眼磷灰石
  • 玉宝石
  • 玉髓
  • 玛瑙
  • 玛瑙晶洞
  • 珊瑚
  • 珊瑚化石
  • 珍珠
  • 珍珠母
  • 电镀黄玉
  • 石榴石
  • 石英
  • 石英猫眼
  • 砂金石
  • 砾背蛋白石
  • 硅孔雀石
  • 硅硼钙石
  • 硅线石
  • 硅线石猫眼
  • 碧玉
  • 碧玺
  • 磷灰石
  • 磷鋁石
  • 祖母绿
  • 符山石
  • 紅寶黝簾石
  • 紫水晶
  • 紫锂辉石
  • 紫黄晶
  • 红宝石
  • 红柱石
  • 红榴石
  • 红玉髓
  • 红纹石
  • 绿松石
  • 绿玉髓
  • 绿龙晶
  • 缟玛瑙
  • 翠绿锂辉石
  • 翡翠
  • 芙蓉石
  • 草莓石英
  • 菱锌矿
  • 萤石
  • 葡萄石
  • 蓝宝石
  • 蓝晶石
  • 蓝铜矿晶
  • 虎眼石
  • 虎眼石斑晶
  • 蛇纹石
  • 蛋白石
  • 蛋白石二层石
  • 血石
  • 赤铁矿
  • 金发晶
  • 金绿柱石
  • 金绿玉
  • 钙铁榴石
  • 钙铝榴石
  • 钙铝榴石
  • 钠柱晶石
  • 钻石
  • 铁铝榴石
  • 铬云母红宝石
  • 铬透辉石
  • 铯绿柱石
  • 锆石
  • 锰铝榴石
  • 镁铝榴石
  • 闪锌矿
  • 阳起石猫眼
  • 雪花黑曜石
  • 青金石
  • 顽辉石
  • 马拉亚石榴石
  • 马里石榴石
  • 鹰眼石
  • 黄水晶
  • 黄玉
  • 黑曜石
  • 黑蛋白石
Main Categories
  • 新品
  • 批量宝石
  • 标准化宝石
  • Gemstones By Piece
  • 高档宝石
  • 匹配的成对宝石
  • 凸面宝石
  • Drilled Gems, Briolettes and Beads
  • 诞生石
  • 宝石雕刻
  • 别致的宝石
  • 星光宝石
  • 未经加热处理的蓝宝石
只提供英语客户支持

免费通话 - 仅限美国和加拿大:
1-800-464-1640

国际:
+66-39303404

省钱
其他商品不收取额外的运费!
8.90美元全球发货

Update Translation
 
Current Value
New Value
GemSelect Gemstones
X 关闭窗口
Colored Gemstones
X 关闭窗口
Colored Gemstones
X 关闭窗口
Colored Gemstones
大小和重量

Gems are always measured in Millimeter (mm)

Dimensions are given as;
length x width x depth,
except for round stones which are;
diameter x depth

Select gems by size, not by weight!
Gem varieties vary in density, so carat weight is not a good indication of size

Note: 1ct = 0.2g

Size Comparison Chart