|Name||UnID'd Name||Weight||Effect||Value||Made of|
|crystal of darkness||brown gem||1s||used, darkens area around PC||low||crystal|
|crystal of fire||red gem||1s||used, fireball, 6d6 damage if thrown or used with sling||average|
|crystal of health||blue gem||1s||used, restores 12d12/6d6/3d3 HP||average|
|crystal of knowledge||green gem||1s||used, magic maps; if blessed, +1d2 Le ||low|
|crystal of light||white gem||1s||used, lights area around PC||low|
|crystal of power||red gem||1s||used, restores PP: +6d16/+3d8/-4d12 PP ||low|
|amber stone||brown gem||1s||average||crystal|
|aquamarine||blue gem/green gem||1s||above average|
|ruby||red gem||1s||very high|
|sapphire||blue gem||1s||very high|
|turquoise||blue gem/green gem||1s||high|
|worthless piece of blue glass||blue gem||1s||very low||glass|
|worthless piece of brown glass||brown gem||1s|
|worthless piece of green glass||green gem||1s|
|worthless piece of red glass||red gem||1s|
|worthless piece of white glass||white gem||1s|
|gold piece||0.01s||H(+0, 1d1) M(+0, 1d2) ||1||gold|
 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, as even "very high" usually translates to about only 500gp. 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.