How to identify true and false agate jewelry?

Agate is a gemstone commonly used in inlaid jewellery and engraving crafts. The method of authenticity selection is as follows:

(1) Color: The true agate color is bright and bright, and the color and light of the fake agate are both poor. The contrast between the two is more obvious. The natural red agate is well-defined in color and the strips are very visible. Careful observation reveals densely arranged small red spots at the red strips. The fake agate smokers made of stone imitation are mostly petal-shaped at the bottom, forming a "chrysanthemum bottom"; while the dyed blue agate is bright and uniform, giving a false feeling.

(2) Texture: The fake agate is mostly imitation of stone, which is softer than the true agate. The jade can be traced on the fake agate, but the real thing can not be drawn. On the surface, there are few flaws in the real agate, and there are more inferior qualities.

(3) Process quality: The production process of high quality high agate is strict and advanced, so the surface brightness is good, the setting is firm, the circumference is positive, no scratches or cracks.

(4) Level: Water agate is the most precious variety in agate, characterized by a closed cavity in the agate containing water.

All grades of agate are best in red, blue, purple and pink, and require transparency, no impurities, no sand, no cracks. Among them, those with a weight of 4.5 kg or more are special, and those with a weight of 1.5 kg or more are one. Grade, 0.5-1.5 kg is secondary.