The document discusses the sale of the largest natural Fancy Vivid Green diamond ever sold at auction. Weighing 2.52 carats, it sold for USD 3.08 million at a Sotheby's auction in Geneva, Switzerland. It is an exceptionally rare gemstone, being a pure green color without other hues, and it owes its color to natural irradiation over millions of years. On average, only one new natural green diamond is introduced to the market each year, making pure green diamonds extremely rare and highly valued.

1. Newsletter Nr. 3 05/2010
All About Natural Coloured Diamonds
Largest Vivid Green Diamond at Auction Weighs 2.52ct
An extremely rare natural Fancy Vivid Green diamond sold for USD 3.08
million (CHF 3.1
million/EUR 2.07 million) last November at the Hotel Beau Rivage in
Geneva, Switzerland during
Sotheby’s “Magnificent Jewels” auction.
Compared to some of the other fancy coloured diamonds up for
auction – including a 5.96 ct Vivid
Blue named the "Star of Josephine," a 6.63 ct Vivid Pink, and a 74.80 ct
Fancy Vivid Yellow
diamond – this exquisite green collector’s diamond weighed a mere
2.52 ct. Nonetheless, it is the
largest natural Fancy Vivid Green diamond ever sold at auction.
Graded by GIA as a Fancy Vivid Green, Natural Colour, cushion shape,
modified brilliant-cut, and
VS1 Clarity, these qualifications make this diamond an exceptional
treasure even among other
natural green fancy coloured diamonds. It is a true gemmological rarity
Green diamonds owe their colour to millions of
years of exposure to a source of natural irradiation

2. in the earth. The majority of naturally irradiated
diamonds show isolated green stains or spots that
barely penetrate the surface of the crystal and are
almost always removed during the cutting process.
Only a very small minority have been consistently
exposed to a natural irradiation source over time
and therefore exhibit an even green hue throughout
the entire stone.
With an average of about one new green being introduced to the
market each year, pure green
diamonds without any bluish, greyish or yellowish secondary colour are
extremely rare and highly
valued.
3 05/2010
所有關於天然彩色鑽石
最大的鮮豔綠色鑽石在拍賣的重量 2.52ct
一種極其罕見的自然花色鮮豔綠色鑽石銷售為$3.08 百萬美元（3.1
百萬瑞士法郎
/207 百萬歐元）去年 11 月在瑞士日內瓦 Beau Rivage 酒店在蘇富
比瑰麗珠寶“拍賣會。
相比一些其他彩色鑽石拿出來拍賣 - 包括 5.96 克拉鮮豔
名為“約瑟芬之星”，6.63 克拉的鮮粉紅, 一個 74.80 克拉絢麗鮮

3. 黃
鑽石。
這個精緻的綠色珍藏的鑽石僅重 2.52 克拉。儘管如此，它是
有史以來最大的天然絢麗鮮豔綠色鑽石在拍賣會上售出。
作為一個絢麗鮮豔綠色，天然顏色，墊形明亮式切割，由 GIA 分級
VS1 淨度，這些資歷鑽石，使這一個特殊的寶物，即使在其他
綠色天然彩鑽。它是一個真正的稀有寶石
綠鑽石他們的色澤經過百萬年在地上
暴露到源極的自然照射。
大多數自然照射的綠色鑽石顯示斑斑，
幾乎沒有穿透的表面晶體和
幾乎總是在切割過程中除去。
只有極少數一直
隨著時間的推移接觸到一個自然的照射源
有表現甚至綠色的色調的石材。
平均約每年向市場推出一個新的綠色，純綠色
沒有任何藍色的，灰黃色或黃輔色的鑽石是極其罕見和高度價值。

4. Largest Vivid