For the item, see gem.

Gemstone is the material which all gems are made out of in NetHack. Agate, black onyx, diamond, emerald, jade, moonstone, ruby, sapphire, tiger eye and topaz rings are also made of gemstone.Polypiling gemstone objects may result in either a stone golem or a clay golem^[1].

Source code references Edit

1. ↑ zap.c#line1090