@LuiiS as of Patch 3.0, we can now use Calcite, Angelite, Quartz, Diamond, Larimar, Kyanite, Sapphire, Fluorite, & Topaz. it costs 5 Crystals. so if it takes 5 attempts to change your Pets Element from Poison to Fire, that will cost you 25 Calcite.
@LuiiS as of Patch 3.0, we can now use Calcite, Angelite, Quartz, Diamond, Larimar, Kyanite, Sapphire, Fluorite, & Topaz. it costs 5 Crystals. so if it takes 5 attempts to change your Pets Element from Poison to Fire, that will cost you 25 Calcite.