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.

Alexandrite is known as "Emerald by day, ruby ​​by night" because it has one of the most dramatic color changes among gemstones, such as green in sunlight and red in incandescent light. The very precious habit of alexandrite color change is caused by the presence of minor impurities in the element chromium. The most desirable Alexandrite colors are those that have a very clear color change.