UD Gemstone D20 | Blue Goldstone Constellation

Gemstone Facts
Blue goldstone is made by heating molten glass in a large vat, using low oxygen. Cobalt is added to give the glass a rich deep blue colour. Copper oxide granules are added next, then the mix is allowed to cool slowly. The slower this mix cools, the larger the copper crystals within the stone. 

Details
This 30mm D20 has gold engraved numbers featuring a constellation pattern and comes inside a square black leather snap closure case. As this die is made of glass, we encourage rolling on a padded surface, such as a dice tray. We do not recommend directly rolling onto a table, especially if it is made stone, glass or wood.

Storage and Cleaning
To keep the surface shiny, you can wash it with warm soapy water. This will remove grime and dust that may detract from its appearance. A relatively hard stone, rating 6 on the Mohs hardness scale. It’ll scratch crystals that are softer than itself, such as calcite and selenite. On the other hand, it will be scratched by harder crystals such as quartz.