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
Refine S2 Refine S2 The Refine S2 is a subcompact CUV produced by JAC Motors under the Refine sub-brand. It was positioned between the Refine S2 Mini and the Refine S3 compact CUV. The Refine S2 was launched on the 2015 Shanghai Auto Show in April 2015, and was later launched in the Chinese market in August 2015. Pricing of the Refine S2 was revealed at the market launch with prices ranging from 58,800 yuan to 75,800 yuan. The JAC iEV7S is essentially the electric version of the Refine S2. It costs 119,500 yuan after subsidies, and it is powered by an