มาตรฐานพลอยสี (Colorstone Grading)
Sumalee Thepsoparn
SGS : The School of Gemological Sciences (Thailand) (2008)
In Collection
#691
10*
Science
Gemology, Grading
Hardcover 9789745929845
Thai
Using the principle of 4C's, "Colorstone Grading" provides a knowledge of how to evaluate standard colorstones and how to understand its hue, tone and saturation - so as to select colorstones of high demand in current market judging by these factors. The book also includes various features of inclusion, number of inclusion in one particular kind of colorstone, cutting, shape, means to calculate stone weight by measuring dimension of the stone itself.
Product Details
Edition 1st
No. of Pages 54
Height x Width 300 x 220  mm
Personal Details
Read It Yes
Store SGS
Location A 9
Purchase Price 38.66 CHF
Current Value 35.25 CHF
Purchase Date janvier 2012
Condition First hand
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