FACTS ABOUT CRYSTAL REVEALED

Calcite crystals are often Employed in optical devices, and perhaps the graphite in pencil lead are sheets of crystals that fundamentally crack apart layer by layer to write down. Silica can variety silicate crystals which might be The idea for quartz, mica, olivine, and many other crystals and minerals.无色水晶以晶莹美丽、洁净透明着