According to the traditional psychology and consumption customs of different countries (ethnic groups), 다이아 패 한 벌, 루비, 사파이어, 에메랄드, high-quality cat’s eyes, alexandrite, black opals, and extra-grade jade are usually listed as high-grade gemstones. Their prices are extremely expensive, a few per carat. The prices range from thousands to tens of thousands of dollars, and the prices […]
