Carbon trade in both types of diamonds exists, the two markets act in dramatically different ways. Unlike precious metals such as gold or platinum, gem diamonds do not trade as a commodity: there is a substantial mark-up in the sale of diamonds, and there is not a very active market for resale of diamonds. Industrial diamonds are valued mostly for their hardness and heat conductivity, with the gemological qualities of clarity and color being mostly irrelevant. About 80% of mined diamonds (equal to about 100 million carats or 20 tonnes annually) are unsuitable for use as gemstones are relegated for industrial
Four Ways to Forgiveness Four Ways to Forgiveness Four Ways to Forgiveness is a collection of four short stories and novellas by American writer Ursula K. Le Guin. All four stories are set in the future and deal with the planets Yeowe and Werel, both members of the Ekumen, a collective of planets used by Le Guin as part of the background for many novels and short stories in her Hainish Cycle. In 2017 it was reissued as an e-book, augmented with a fifth related story by Le Guin, as Five Ways to Forgiveness. The stories in the book are set on two planets