Jewelry Quality Supervision and Testing Center of China Chamber of Commerce is a third-party testing institution approved by China National Accreditation Committee for Conformity Assessment, so from the perspective of qualification, the certificate of this institution is reliable and the testing conclusion is credible.

China Business Federation Jewelry Quality Supervision and Testing Center mainly covers jewelry and jade identification, diamond grading, ornamental stone identification, precious metal purity detection, precious metal coating thickness and nickel release in jewelry and determination of harmful elements in jewelry.

The main varieties of extended data directory are as follows:

(1) onyx: The stripes are very thin. One of the most precious is called "red agate", which is listed as "birthstone in August" because of its rarity.

(2) Agate: Agate with banded structure, with different varieties such as monochrome or multicolor.

(3) Moss agate: Dendritic or mossy patterns appear due to chlorite or manganese oxide (black) infiltrating along the cracks.

(4) Agate: Agate with iron oxide flake mineral crystals in the strip layer, which can shine with fiery red luster.