Quantcast

Ch. 3: Diamond

Ch. 3: Diamond Page of 296 Ch. 3: Diamond Text size:minus plus Restore normal size   Mail page  Print this page
70
PRECIOUS STONES.
carefully examined for any diamonds that may lie among them."
Some fears were entertained as 1872 opened with still brightening prospects, that the large numbers of stones found might produce a depreciation in value; but such is the unprecedented demand for diamonds, these fears have not yet been realized. The "off colour" of South African diamonds only enhances the value of the translucent and colourless stones of Brazil and India; and their large size and extreme brilliancy finds for them an ample appreciation. It is estimated that the diamonds exported from Capetown during the year 1871 amounted in value to $-,7,500,000.
WEIGHT AND VALUE OF DIAMONDS.
The diamond is known in three different moleĀ­cular states, forming a graduated series that is very remarkable. It is crystallized, crystalline, and amorphous.
The crystallized diamond is the diamond "par excellence;" it is that which, when cut, is used in jewelry.
The crystalline diamond cannot be cut. It bears in commerce the name of "boart," and is reduced to powder for cutting crystallized gems.
The amorphous diamond is of a steel-gray colour
Ch. 3: Diamond Page of 296 Ch. 3: Diamond
Suggested Illustrations
Other Chapters you may find useful
Other Books on this topic
bullet Tag
This Page