Dark Sapphire

Dark Sapphire is a resource that spawns in the backpack of Grandmaster miners. There is no special place to mine for this, any location that yeilds ore can spawn a resource gem. Dark Sapphire, among others, is an ingredient required to craft the following items:

Assassin's Shortbow

Darkglow Scimitar
Icy Scimitar
Dark Sapphire Bracelet

Sapphire Mace

True Assassin Spike
Twinkling Scimitar
Void Orb

Resources
Cloth	Bale of Cotton • Ball of Yarn • Bolt of Cloth • Pile of Wool • Spool of Thread
Gems	Blue Diamond • Brilliant Amber • Dark Sapphire • Ecru Citrine • Fire Ruby • Perfect Emerald • Turquoise • White Pearl
Imbuing Ingredients	Enchanted Essence • Magical Residue • Relic Fragment
Leather	Normal • Spined • Horned • Barbed
Metals	Iron • Dull Copper • Shadow • Copper • Bronze • Golden • Agapite • Verite • Valorite
Peerless Ingredients	Blight • Corruption • Captured Essence • Diseased Bark • Dread Horn Mane • Eye of the Travesty • Grizzled Bones • Lard of Paroxysmus • Muculent • Putrefaction • Scourge • Taint
Scales	Black • Blue • Green • Red • White • Yellow
Wood	Normal Wood • Oak • Ash • Yew • Bloodwood • Heartwood • Frostwood