diamond is one of the best-known and most sought-after gemstones. they have been used as decorative items since ancient times. in the middle ages, the gemstone was considered a stone that could provide healing powers, curing depression and opening the heart.
amethyst is a violet variety of quartz. the name comes from a greek word, a refered to the belief that the stone protected its owner from drunkenness. the ancient greeks wore amethyst and carved drinking vessels from it in the belief that it would prevent intoxication.
yellow sapphire is a gem of the corundum family and is a twin of ruby and blue sapphire. it is available in yellow, golden and orange colors. the highest quality is known to be of lemon-yellow color. the color in yellow sapphire is of iron and titanium.