Gemstone Powder

is a collectable and non-item that is used to upgrade Tier 6 and 7 of the Heart of the Mountain perks.

Obtaining
It can be obtained from many different things, as listed below:
 * Mining Gemstone.
 * Claiming Crystal Hollows Commissions.
 * Two Heart of the Mountain perks, Sky Mall and Daily Powder, directly reward additional powder.
 * The Sky Mall perk grants a chance to earn 15% extra powder for an entire SkyBlock day.
 * The Daily Powder perk grants up to 3964 powder at level 100 (400 at level 1) for the first Gemstone mined each day, resetting at midnight Eastern Standard Time.
 * Chests in the Crystal Hollows.
 * Mines of Divan Treasure Chests.
 * Garden NPC (Emissary Wilson)

Heart of the Mountain
Gemstone Powder is used to upgrade all HotM perks from Tier 6 and 7. Perks in Tiers 5 and below are upgraded with Mithril Powder.