Red, sapphire value measurement
The value of red and sapphire is closely related to its particle size and weight. Gems below half a carat are more common and cheaper; if more than one carat is much more expensive, more than 3 carats will rise in geometric progression. If it is more than 10 carats and the quality is very good, it is very rare, worth up to several million dollars.
Generally, the following levels can be divided to estimate the value:
Below 0.5 carat, fine grain, easy to get, is very cheap for group setting;
0.5-1 carat, small grain, easy to get, can be used as a small ring face, cheap;
1-2 carats, medium grain, generally affordable, can be used as a ring pendant;
2-3 carats, larger grain, higher value, large market demand;
3-5 carats, large grain, high value, rare;
More than 5 carats, very large, expensive, very rare.
The difference between red and sapphire natural products and synthetic products
The red and sapphire natural products and synthetic products are very different in appearance. First, the growth lines in the gemstones are observed. The flame melting method is mostly curved, while the natural crystals form straight fold lines. Again, observing the inclusions in the gemstone, the flux method synthetic gemstone often contains the melting point of the melting point and the coloring flux residue, which is a "worm-like" under a 20-fold magnifying glass; sometimes there are circular bubbles and Tiny bubbles, sometimes visible hexagonal or triangular platinum pieces that fall off the enamel. The inclusions in natural gemstones are mostly fine rutile crystals or fingerprint-like gas-liquid inclusions; small cracks are also common. The last thing is to observe its color. The color of the synthetic product is too bright and very uniform. It looks a bit dull and glaring, while the natural color is relatively soft.
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