Rare Mine Chemical Resources Limited |
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Gemstone Material: | Tourmaline |
Gemstone Weight: | As per requirement |
Gemstone Color: | black |
Gemstone Size: | As per requirement |
Optical Special Effects | Phosphorescent/Phosphorescence |
SiO2 | 40.02% |
H2O | 4.30% |
B2O3 | 8.32% |
MnO | 1.20% |
Al2O3 | 41.41% |
Na2O | 1.90% |