Enchantments somewhat Simplified
The enchanting system is very complicated, it can be hard to know what you should pick up to get the effect you want.
Each Enchantment has a gemstone as the basis of an enchantment. The specific quality of the enchantment requires a specific combination of ores and/or gemstones.
Black Rock is only useful for rank 9 and 10 enchantments, Malachite Ore is only required for rank 10 enchantments, Malachite Gems are only required for Rank 10 enchantments and all ranks of Healing Aura. So you are unlikely to find a use for those while you’re still in Broken Valley. Spontaneous Combustion is an enchantment for Jewellery, not weapons, but it follows the ore pattern for weapons. So if you have a specific enchantment in mind, you will want to pick up only certain types of gems, and if you know the quality of the enchantment, you'll know what ores to seek out.
Weapon Enchantments:
Base Gemstone:
Life Leech: Amber
Poison: Aquamarine, Venom Stone
Fire Curse: Crystal
Mana Leech: Emerald
Increased Physical Damage: Moonstone
Increased Magical Damage: Diamond
Butcher: Obsidian
Spontaneous Combustion (Jewellery): Diamond
Armor Enchantments
Base Gemstone:
Increased Mana: Opal
Life Line: Pearl
Melee Protection: Pyrite
Ranged Protection: Quartz
Magic Protection: Ruby
Magic Damage Aura: Topaz
Retribution Aura: Spinel
Ores Required:
This is almost identical to weapon enchantments, except that instead of Red Ore, Armor enchantments from Rank 4 onward require some amount of Venom Stone.
Rank 1-2: Iron
Rank 3-4: Droxlerite, Fossil
Rank 4-10: Red Ore (Weapons) OR Venom Stone (Armor)
Rank 5-6: Gold Ore
Rank 7-8: Droxlerite
Rank 9-10: Black Rock
Rank 10: Malachite Gem, Malachite Ore
Jewellery Enchantments:
All Jewellery enchantments (save spontaneous combustion) require Gold Ore.
Healing Aura: Malachite Gem, Sapphire, Gold Ore
Retribution Aura: Spinel, Gold Ore
Static Charge Aura: Tiger’s Eye, Gold Ore
Damage Aura: Topaz, Gold Ore
Magic Damage Aura: Topaz, Gold Ore
Poison Aura: Aquamarine, Gold Ore, Venom Stone