GIC certificate refers to GIC jewelry appraiser qualification certificate, including GIC gemmology certificate and GIC diamond grading certificate. Gem certificate and diamond certificate can be studied separately and obtained separately. To obtain GIC jewelry appraiser qualification certificate, you must obtain GIC gemmology certificate and GIC diamond classification certificate.

2.NGTC Gemstone Appraisal Qualification Certificate:

NGTC is the abbreviation of National Jewelry and Jade Quality Supervision and Inspection Center. The curriculum is similar to GIC. After passing the examination, you can obtain the NGTC gem appraisal qualification certificate jointly issued by the National Jewelry and Jade Quality Supervision and Inspection Center and the National Gem Monitoring and Training Center.

3.FGA certificate:

The FGA course of British Gemmological Association is divided into two parts: basic course and certificate course. Only candidates who pass the basic course examination are eligible to study the certificate course and take the examination to obtain the FGA certificate. However, with the consent of the British side, those who have obtained the GIC certificate issued by Wuhan Jewelry Institute can take the certificate course examination instead of taking the basic course.

Features of jewelry:

1, "beauty", that is, gorgeous, crystal clear and dazzling.

If a gem is not beautiful, it can't be a gem. This kind of beauty is either colorful, transparent and clean, or has special optical effects (such as cat's eye, color change, night light, etc.). ), or have special patterns (such as chrysanthemum stone, agate, plum blossom jade, etc. ).

For example, diamonds with few defects can be polished into precious diamonds, while those with poor transparency, many defects and black color can only be used as industrial raw materials.

2, "long", that is, the texture is hard and wear-resistant, and it can last for a long time.

Because of its high value, people must expect it to be durable, valuable and even heritable. One of the reasons why diamond is the most expensive gem is that it is the hardest in the world and is not afraid of corrosion. Therefore, most precious gems in the world are silicate minerals with high hardness and corrosion resistance (such as jadeite) and a few oxides (such as rubies and sapphires).

Simple minerals (such as diamonds), while soft and easy-to-corrode gems (such as jadeite and southern jade) are of low value and are often used to make handicrafts to win; But there are also a few precious stones that are not included, such as opals and pearls.

3, "thin", that is, less output.

Rare things are precious. Emerald, which is extremely rare in the world, is worth tens of thousands of dollars per carat (0.2 g) because of its superior quality, while some beautiful and "enduring" gems (such as amethyst) have always been low in price because of their large output and easy mining. Some ordinary rocks, after pondering, also have the characteristics of beauty and durability, but they cannot become a member of the gem family. The reason is that things that are easy to get will be cheap.