Amethyst even if the iron concentration is low. Natural amethyst is dichroic in reddish violet and bluish violet, but when heated, turns yellow-orange, yellow-brown, or dark brownish and may resemble citrine, but loses its dichroism, unlike genuine citrine. When partially heated, amethyst can result in ametrine. Amethyst can fade in tone if overexposed to light sources and can be artificially darkened with adequate irradiation. Amethyst was used as a gemstone by the ancient Egyptians and was largely employed in antiquity for intaglio engraved gems. The largest Ancient Egyptian amethyst mines are located at Wadi el-Hudi and those mines may be the
Amethyst Incident drawing the attention of PLA snipers. By the time the shelling stopped at about 11:00, 22 men had been killed and 31 wounded in all. "Amethyst" had received over 50 hits and holes below the waterline were plugged with hammocks and bedding. During this time the destroyer "Consort" was sighted, flying seven White Ensigns and three Union flags, steaming down from Nanking at 29 knots. Admiral Madden, the Flag Officer, second in command, Far East Station, ordered the destroyer HMS "Consort" (Commander Robertson) to go from Nanking to the "Amethyst"'s assistance, and ordered the frigate "Black Swan" (Captain Jay) to