1998 , 4 2024  

 




20
50
100




115-


-














" "

 

 

-

ŭ , , : D/VS2 20,75 .

HPHT D-F, 2.

2a 1,8% , . , . , : , , , , .

57.74 , 20.75 , 450 .

, 20 2 . , . . 11 . , 10 . , 200 . .

, .

, . 250 - 5-6 , .

: [ rough-polished.com ]

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