How to choose sapphire, what should I pay attention to?

The criteria for selecting sapphires are similar to those for diamond 4C, but the order of importance is different: color (the most important indicator in colored gems), transparency, cut and weight.

Color is the most important reference index for choosing gems, and the value of gems is also highly positively correlated with color saturation.

Sapphire has infiltrated iron and titanium in the mineral crystallization process, so it is blue, which is more in number and larger in particle than ruby. Its color selection requires pure and bright color, and the best products are dark blue and swan blue. Followed by gray blue, green blue, light blue, purple blue and so on.

The interior of natural sapphire is relatively clean, and occasionally flat bands can be seen. When you turn the torus and look at different directions from the waist, you can see different blues and greens. Attention should be paid to the bright and uniform color of artificial sapphire, including blue, light blue and purple blue, with no defects inside.

2. In addition, non-professional customers can also refer to the indicators given in the certificate as a basis for judgment when purchasing sapphires. Common international certificates such as GRS.