Cordate telosma is not common in the market, but the most common one is the night pearl, which is a rare gem. In ancient times, it was called "following pearl", "hanging pearl", "hanging thorn" and "bright moon pearl". Usually, the luminous pearl refers to fluorescent stone and luminous stone.
It is formed by some luminous substances in the earth after tens of millions of years, from the initial volcanic magma eruption to the later geological movement, and after processing stones containing these luminous rare elements, which is also known as the night pearl.
Identification method of night pearl
1, light gray fluorite that can continuously emit light for dozens of hours after being illuminated 15 minutes.
2, it has phosphorescence, which can not only produce the quasi-effect of the night pearl.
3, beautiful color, translucent, without any light, that is, permanent active luminescence, and the luminous energy is large.
4. Be sure to distinguish between fluorescence and phosphorescence of fluorite. Phosphorescence is caused by external light source, which can keep a certain luminous time after removal.
5. Observe its luminous length, uniformity, half-life and afterglow.