Onyx- increases wisdom and serenity
Malachite- unconsious wishes, dreams and feelings
Tourmaline- wealth and fame
Agate- safety and relaxation
Black Pearl- can help Capricorn discover the beauty and depth of his character
Moss Agate- lucky stone
Others:
Rock crystal
Diamond
Jasper
Obsidian
Smoky quartz
Sapphire
Citrine