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다이아몬드 박물관(Diamond Museum. Diamantmuseum). 암스테르담(Amsterdam) 본문
다이아몬드 박물관(Diamond Museum. Diamantmuseum). 암스테르담(Amsterdam)
세계속으로 2018. 7. 25. 16:21다이아몬드 박물관(Diamond Museum. Diamantmuseum).
암스테르담(Amsterdam). 네덜란드(Netherland)
COSTER
Diamond since 1840
Coster Diamonds
Creator of the Koh-i-Noor
This crown is a replica of the original Royal Crown of the Royal House of Great Britian.
In July 1852 Coster Diamonds industry was commissioned to repolish the diamond which took 38 days to complete.
During this time the diamond lost 77.07 carats.
The diamond weight is now 108.93 carats.
The original crown is on display with all royal jewels in the Tower of London.
Regent 140.5 carats
Jubilee 245.35 carats
De Beers 234.5 ct
Dresden green 41 carats
Orloff 199.6 carats
Tiffany 125.5 carats
Hope 44 carats
The 4C Diamond Guide
1 - Carat
1 carat = 0.2 gram or 100 points
2 - Colour
D-E | River | Exceptional white |
F-G | Top wesselton | Rare white |
H | Wesselton | White |
I | Top crystal | Slightly tinted white / (TLB) |
J-K | Crystal | Tinted white / (LTIN/TLB) |
K-L | Top cape | Slightly yellowish / (TIN/BRO) |
M-Y | Cape | Yellowish Other colours |
3 - Clarity
Pure | loupe clean |
V.V.S.I. | very, very small inclusions |
V.S.I. | very small inclusions |
S.I. | small inclusions |
Pique 1 | few inclusions |
Pique 2 | distinct inclusions |
Pique 3 | coarse inclusions |
4 - Cut
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