Ключевые слова: africa, amsterdam, auction, botswana, carat, collection, crystal, crystalline, dealer, diamond, diamond business, diamond factory, diamond polishing factory, diamonds, gem, gemmology, gems, gemstone, geological, geology, industrial, industry, investment, jewellery, jewellery show, jewelry, luxury, macro, material, mine, mineral, mineralogy, money, natural, nature, precious, raw, rock, rough, rough stone, sample, sorting, sorting icon, stone, stones, tel aviv, trade, uncut, work, workshop,