Cup‑Shaped Hollow Calcite 5 US Showroom Dimension: 10

Dimension: 10

Dimension : 11

with some sections penetrating to the core

The image shows the effect under shortwave UV light

微绿的石英晶体被像花边一样的方解

Cup‑Shaped Hollow Calcite 5 US Showroom Dimension: 10CupShaped Hollow Calcite From Phong Nha Ke Bang, Quang Binh, Vietnam. Dimension: 6. 7x9. 8x8. 7cm This unique hollow cupshaped calcite forms in karst caves that remain permanently submerged by groundwater. In mineralrich, calciumsaturated water, crystal edges grow faster with constant access to fresh mineralladen flow, while growth slows at the stagnant, nutrientdepleted core gradually creating its hollow cup structure. Underwater, the calcite