Ancient Greeks distinguished between precious and semiprecious gems. Only four stones are considered precious: diamond, ruby, sapphire, and emerald. Modern gemologists describe stones based on chemical composition and hardness
Black Tourmaline comes in high-quality chunky and smooth varieties. Many mines, including China's, have closed, making A-grade rare. Common type is spindly and friable, often found with quartz and mica. Has Mohs hardness of seven to seven-and-a-half
Jade comes in two main varieties: nephrite (green) and jadeite (various colors). Nephrite is softer (6.0-6.5 Mohs) and tougher than jadeite (6.0-7.0 Mohs). Jadeite is rarer, found in fewer than 12 places worldwide. Jadeite shows more color variations including emerald green and lavender
Mod adds EMC currency for tracking item costs. Philosopher's Stone enables block transformation and crafting. Transmutation Table requires Tome of Knowledge for item purchases
Black tourmaline (schorl) is the most common type of tourmaline. Contains iron, titanium, and manganese for its black color. Converts mechanical energy into electrical energy. Protects from harm and absorbs negative energies
Black tourmaline is known as the Protection Stone. Protects from negative energy and psychic attacks. Makes you feel grounded and connected to earth. Connects to Root Chakra for security. Transforms negative energy into positive