|amber stone||brown gem||1s||342|
|aquamarine||blue gem/green gem||1s||513|
|crystal of darkness||brown gem||1s||used, darkens area around PC||51|
|crystal of fire||red gem||1s||used, fireball, 6d6 damage if thrown or used with sling||256|
|crystal of health||blue gem||1s||used, restores 12d12/6d6/3d3 HP||256|
|crystal of knowledge||green gem||1s||used, magic maps; if blessed, +1d2 Le ||136|
|crystal of light||white gem||1s||used, lights area around PC||68|
|crystal of power||red gem||1s||used, restores PP: +6d16/+3d8/-4d12 PP ||120|
|gold piece||0.01s||H(+0, 1d1) M(+0, 1d2) ||1|
|turquoise||blue gem/green gem||1s||600|
|worthless piece of blue glass||blue gem||1s||16|
|worthless piece of brown glass||brown gem||1s||16|
|worthless piece of green glass||green gem||1s||16|
|worthless piece of red glass||red gem||1s||16|
|worthless piece of white glass||white gem||1s||16|
 The gold piece damage is significantly better for Merchants.
The amount of gold creation is DLd30-1 + DLd10-1 + DL*5, Miser has a 1/5 chance to increase it by (1d20+100) * PreviousTotal/100.
 Blessed may give +2d2 MaxPP, cursed -2d2 MaxPP. Actual chance is based on Luck, maximum 25%.
 Le<20:+1d2Le; else (100-((Le-19)^2))%:+1d2Le; 1%:+1d2Le; see also 0.6.1.6
Gems are meant as means to carry wealth effectively - however it is not too effective in ADOM. Gems and crystals are made from crystal, worthless pieces are from glass. Gems can be used with slings. The base damage value is (+0, 1d1) rather than the (+0, 1d4) of a rock, but gems are lighter, and crystals of fire will create fireballs at their point of impact.