Emerald is the best quality product from Colombia. 一般的に言えば, a good-quality emerald has a market price of $10,000 カラットごと. Because the emerald has a very shallow bottom, low refractive index, less fire, the first emphasis is on color and cleanliness. したがって, to choose emeralds, first look at the color, the color should be dark, 厚い, and a little blue; second, look at the inclusions, the cleaner the better, emeralds usually have inclusions to some extent, and it is not easy to clean.
When you see a green, blue and clean emerald, the price is scary. 1 carat is not available for tens of thousands of dollars. Such high-quality goods are often sold at Sotheby’s and Christie’s auctions. If you see it at a roadside stall, you can definitely say that it is fake.
The price of emeralds has a lot to do with the cut. 一般的に言えば, the price of egg noodles is very different from that of cut noodles.
The better quality emeralds are usually cut into squares (emerald cut), and occasionally have a drop shape, and the more impurity will appear in the shape of egg noodles. Usually square Colombian emeralds are most commonly under 5 カラット, 5 に 10 carats are considered rare, 10 に 20 carats are even rarer, そして 20 carats and above are considered collector-level. As for the Colombian egg noodle emeralds, generally speaking, the weight will be a little heavier. There was a 100-carat Colombian emerald in Bangkok, which was light green. 1 carat was sold for 2640 元. Although the bigger gems are scarce and theoretically the price is higher, but it is also Colombian emeralds, and the price difference between cut and egg noodles is very large. 例えば: a 5-carat Colombian emerald with a cut surface is about 50,000 per carat Yuan Renminbi; 5 carat egg noodle Colombian emeralds, the asking price per 1 carat is about 10,000 元.
Emerald is one of the five most precious gemstones. The reserves are rare. If you buy it well, there is indeed room for appreciation.