LT--- BL1,BL2,BL3
About Spherulite without original box
1. 99.9% extra pure raw materials extracted form natural minerals
2. Melted in self-developed platinum system, at temperature up to 1700℃
3. Automatic block forming technology eliminating the need of grinding and polishing
4. Precision heat-treatment for optical grade glass nucleation and crystalization
5. Interlocking micro-structure with nanometer sized needle shape crystals
6. Human teeth like opalescence and fluorescence form rare earth elements
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