鑽石鑽石亮晶晶鑑定_(9)

這章是鑑定最後的一章 , 也許要分二到三篇才能講完 .

以下是兩顆真實的鑽石資料的零售價格的比較 , 為何它們看來是相同級別 , 但價格又會不一樣呢 ! 其中就是有其奧妙 , 要了解下列不同比較的鑽石列表才會明白 , 我以 A ,B 作代號來區別這兩顆真實的鑽石 . 以下的 A 鑽石的 (G.I.A) 詳細報表 (Diamond Grading Report) 如下 . 原來報表是沒有中文的 , 銅牛加上中文 , 方便網友閱讀而己

* A Diamond Grading Report documents the specific characteristics of diamond. These reports are issued by the Gemological Institute of America (G.I.A), which is among the most respected organization in the diamond industry.

Certified by GIA (GIA 鑑定證明書 )

(A) Diamond Details (A 鑽石的明細表 )

1. Stock Number: (貨號) _LD01603167           9. Depth %: (深度比例) _60.8% (6.75mm)

2. Price: (價格) __ US$ 771,544                      10. Table %: (桌麵比例) _ 56%

3. Bank wire price: (電漚價格) US$ 759,971   11. Polish: (拋光級別) _ Excellent

4. Price per carat:  每卡拉價格)US4154,001     12. Symmetry: (對稱性)  Very Good

5. Carat weight: (重量) ___ 5.01                       13. Girdle: (腰部) __Medium

6. Cut: (切割方法)_ Excellent                           14. Culet: (鑽尖麵) __ None

7. Color: (顏色) ___D                                        15. Fluorescence: (瑩光反應) _ None

8. Clarity: (淨度) _____ IF          16. Measurements: (麵積) _11.07 x 11.13 x 6.75 mm

17. Cut: Excellent (Fair / Good / Very Good / Excellent / Signature Ideal)

This diamond is cut to the finest proportions as determined by its face-up appearance, design, and craftsmanship. It reflects nearly all light as fire and brilliance as determined by the GIA. The GIA certificate lists the cut as Excellent.

18. Color: D (J / I / H / G / F / E / D )

A diamond of this color grade is highly prized, as a diamond with less color has never been found. This grade of diamond is absolutely colorless.

19. Clarity: IF (SI1 / SI2 / VS1 / VS2 / VVS2 / VVS1 / IF / FL)

This diamond has no internal identifying characteristics, even when viewed under a microscope at extreme magnification. These diamonds are not grade flawless usually because of very slight surface marking or minor details in their polish. Diamonds of this grade of clarity are extremely rare.

* 以上是 A 鑽石的明細表 , 再比對以下 B 鑽石的明細表 , 看看有什麽不同 , 而影響兩顆真實的鑽石之間 , 每卡拉竟然相差 US$ 31,816. 為什麽 5.01 Carat 比 5.05 Carat 小 0.04carat, 但價格反而要高出 US$154,508.

* A Diamond Grading Report documents the specific characteristics of diamond. These reports are issued by the Gemological Institute of America (G.I.A), which is among the most respected organization in the diamond industry.

Certified by GIA (GIA 鑑定證明書 )

(B)Diamond Details (B 鑽石的明細表 )

1. Stock Number: (貨號) _LD01854483 .          9. Depth %: (深度比例) _59.3% (6.59mm)

2. Price: (價格) ________  US$ 617,036           10. Table %: (桌麵比例) _ 63%

3. Bank wire price: (電漚價格)US$ 607,781     11. Polish: (拋光級別) _ Excellent

4. Price per carat: (每卡拉價格) US$ 122,185 . 12. Symmetry: (對稱性) _ Good

5. Carat weight: (重量) __ 5.05         13. Girdle: (腰部) _Thin to Slightly Thick, Faceted

6. Cut: (切割方法) _ Very Good       14. Culet: (鑽尖麵) _None

7. Color: (顏色) _____ D                   15. Fluorescence: (瑩光反應) _None

8. Clarity: (淨度) _ IF        16. Measurements: (麵積) _11.06 x 11.17 x 6.59 mm

17. Cut: Excellent (Fair / Good / Very Good / Excellent / Signature Ideal)

This diamond has been cut to allow It reflects nearly all light as fire and brilliance as determined by the GIA. This is an outstanding cut with a negligible visible difference from an Excellent cut diamond, but at a lower price.

18. Color: D (J / I / H / G / F / E / D )

A diamond of this color grade is highly prized, as a diamond with less color has never been found. This grade of diamond is absolutely colorless.

19. Clarity: IF (SI1 / SI2 / VS1 / VS2 / VVS2 / VVS1 / IF / FL)

This diamond has no internal identifying characteristics, even when viewed under a microscope at extreme magnification. These diamonds are not grade flawless usually because of very slight surface marking or minor details in their polish. Diamonds of this grade of clarity are extremely rare.

以下是分析 A / B 之間的不同之處 , 請注意所有紅字 .

看看明細表中第 4. 和第 5. 項 __ A 鑽石比 B 鑽石重量少了 0.04carat, 但每 carat 的售價反而高了 US$ 31,816.

原因如下 :

A 鑽石的桌麵是 56% 比 B 鑽石的桌麵 63% 更為標準 ( 鑽石鑽石亮晶晶鑑定 ( 4) 裏有說鑽石桌麵最標準是從 55%__65)

桌麵與深度的比例是非常會影響售價 .

A 鑽石的 Symmetry( 瓣與瓣的對稱性和勻稱性 ) 是 Very Good ( 非常好 ). 看看 B 鑽石的 Symmetry( 瓣與瓣的對稱性和勻稱性 ) 隻是 Good( 好 ) 而己 , 所以 B 鑽石的 Cut 比較差一級 .

A 鑽石的 Girdle ( 腰部 ) 是 Medium, 看 B 鑽石的 Girdle ( 腰部 ) 雖然是 Thin to Slightly Thick, 但有 Faceted ( 多了一個小麵 ) 這就是兩兩顆真鑽石之間的差別 , 而影響到它們之間的售價會相差十五萬美金 .

在 GIA 詳細報表中的 17.18.19. 這三項 , 是以認真負責任地重申三個 C 的專業評語 . 所以說買 1 carat 以上的鑽石 , 最好是買有 GIA 的鑑定證明書的鑽石 .