Stone of good luck

A stone of good luck, or luckstone, was a small, magically imbued stone that granted its wearer good fortune.

Description
Stones of good luck were usually made from polished agate, frost agate, carnelian, or alexandrite, though other minerals could also be used. If viewed through a detect magic spell, a stone of good luck gave off a faint evocation aura.

A luckstone was originally said to appear exactly like a philosopher's stone or loadstone. In fact, discerning a philosopher's stone from a luckstone seemed to require some destructive testing: placing a suspect stone in molten lead would destroy a luckstone, but not a philosopher's stone.

Creation
They were said to originate in the halfling country of Luiren, with the "luck of the hin" having rubbed off on the stones.

Gold dragons of adult age and older (meaning older than a century) could give any gem the properties of a luckstone for 19 hours to 39 hours depending on age. These temporary luckstones gave their benefits to every good creature within 60–120 ft. (18.3–36.6 m) depending on age, if owned by the dragon but only to the holder if given to another creature.

Notable Owners

 * Drasna Bluemantle, king of Ulgarth, owned a stone of good luck. Used in tandem with a luckblade, the two items earned him the epithet "the Fortunate".
 * The thief/cleric Jak Fleet owned a luckstone, which he kept on a chain fastened to his belt.
 * The illusionist Myste owned a stone of mixed luck, a type of luckstone that only bestowed good luck 85% of the time. On the other 15% of occasions it caused disastrously poor luck.
 * The elven adventurer Sylvanus Moondrop carried a stone of good luck.

Appearances

 * Card Games
 * AD&D Trading Cards
 * Novels
 * Shadow's Witness
 * Video Games
 * Neverwinter Nights: Shadows of Undrentide
 * Neverwinter Nights 2