alexandrite is the highly regarded color changing variety of chrysoberyl. the color of alexandrite changes under different lighting conditions. if viewed in daylight, its color is greenish blue to dark yellow-green.
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.
garnets are a category of silicate minerals that have been used since the Bronze Age as gemstones and abrasives. all species of garnets possess similar physical properties and crystal forms, but differ in chemical composition.