Gems

Gemstones can be mined in veins rarely underground and are very valuable. Their only crafting use is to forge a Phaseblade, however they are worth a large amount when sold to NPCs.

Amethyst

Amethysts are the most widely available and cheapest gemstones mineable (coming in at a measly 5 Silver Coins each) and can be used to construct a Purple Phaseblade.

Topaz

Topaz are less common than Amethyst and worth more (10 Silver Coins each) and can be used to construct a Yellow Phaseblade.

Sapphire

Rarer than Topaz and worth more (15 Silver Coins each), Sapphire are only found towards the bottom of the Cave Layer and can be used to construct a Blue Phaseblade.

Emerald

Found only in the Cavern layer, Emeralds are very valuable (30 Silver Coins each) and used to construct a Green Phaseblade.

Ruby

Rubies are the second rarest gemstone available and worth 40 Silver Coins each, they can also be used to construct a Red Phaseblade.

Diamond

The most valuable gem available (80 Silver Coins each) and the rarest, comes only in smaller veins near the bottom of the Cavern layer. Can be used to construct a White Phaseblade.