Natural pearls are extremely rare.
Black diamonds are more porous and from younger sedimentary rocks, so they are not as expensive as other diamonds.
Black diamonds that are available in the market are usually low grade white diamonds that have been colored black, however, natural black diamonds can be expensive depending on the quality.
Diamonds come from foreign countries many times, and these countries are poor and diamonds often have to be smuggled out becuase organizations control how much goes out.
Diamonds diamonds and more diamonds
Because they're rare. Nothing else.
- Diamond is the hardest known material- 10 on the Mohs scale. - Diamonds are beautiful gemstones. - Diamonds are rare and expensive. - Diamonds have a great thermal conductivity. - Diamonds are generally electrical insulators. - Diamonds have a high optical dispersion.
- Diamond is the hardest known material- 10 on the Mohs scale. - Diamonds are beautiful gemstones. - Diamonds are rare and expensive. - Diamonds have a great thermal conductivity. - Diamonds are generally electrical insulators. - Diamonds have a high optical dispersion.
No, chocolate diamonds are usually less expensive than regular -- white -- diamonds, given equal cut, clarity and carat weight.
'Expensive' diamonds are only available in about 20% of all diamonds mined, the remainder being industrial diamonds. Of that 20%, only a few stones are large enough, clear enough, colorful enough or flawless enough to be sold as 'expensive' diamonds.
The pronoun that would replace the subject noun 'thief' is 'he' or 'she'. Examples:He stole the expensive diamonds. OR, She stole the expensive diamonds.
Only gem-quality diamonds -- about 20% of all diamonds mined -- are expensive. Industrial diamonds can be purchased by the bag full with more-or-less pocket change.
Yes because diamonds in South Africa is more expensive than in America.