Where are diamonds most commonly found in the world?
Diamond
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Diamond has compressive yield strength of 130–140GPa.[27] This exceptionally high value, along with the hardness and transparency of diamond, are the reasons that diamond anvil cells are the main tool for high pressure experiments.[28] These anvils have reached pressures of 600GPa.[29] Much higher pressures may be possible with nanocrystalline diamonds.[28][30]