There are several practical ways to select high-quality glass beads:

1. Look at impurities: The fewer impurities in the glass beads, the better the quality. Grab a handful in your hand. If you can see 3-4 black spots with the naked eye, it is considered a good product. Less than 3 is a top-quality product. 5-6 black spots are normal. More than 8 are slightly worse quality. More than 10 are low-quality or unqualified products.
2. Touch: Take a small amount of glass beads and rub them in your hand. If you feel smooth and round, it means that the roundness is high and the ball formation is good. It is a high-quality product; if you feel stagnant, scratchy or prickly, it is a defective product.

3. Shake and layer: Put the glass beads in a container and shake it to observe the layering. Although the glass beads vary in size, the proportion of each section of particles has a range, and the normal layering should be relatively uniform. If there are too many fine particles or powders after layering, even up to half, the product is unqualified. Normal fine particles will not exceed 10% of the total amount.