Following the March 10th update to Fields of Mistria, the Fire Seal is finally accessible after completing the preceding altars. Unlocking it requires four specific offerings: a Faceted Rock Gem, Rockroot, an Emerald, and a Sealing Scroll. Let's break down how to obtain each item.
Where to Find the Faceted Rock Gem

The Faceted Rock Gem is an artifact located within the mines of Fields of Mistria. Ensure you're playing the updated game version and explore mine floors 50-59. We discovered it on Floor 56 after some digging. Use your pickaxe or shovel to unearth it from marked spots on the ground. Be aware, it's a rare find, so be prepared for some exploration.
Where to Find Rockroot

Rockroot is a common forageable plant found on mine floors 50-59. If you frequently mine, you might already have it. Look for a dark, root-like plant (as pictured above). Only one is needed.
Where to Find an Emerald

Emeralds are the easiest offering to acquire. They're found as geodes on mine floors 50-59 and are relatively common. You can also find them by breaking large boulders in Mistria, purchase them from Balor's Wagon for 200 tesserae, or craft them at the Stone Refinery (if unlocked).
How to Obtain the Sealing Scroll

The Sealing Scroll is obtained through a quest triggered by speaking with Juniper after discovering the seal. You'll then enlist Balor's help, which requires payment:
- 10 Silver Ingots
- 10 Rubies
- 10 Sapphires
- 10 Emeralds
These materials are commonly found in the mines. Once gathered, deposit them in the bin near Balor's Wagon.
Unlocking the Fire Seal
With the Sealing Scroll, Faceted Rock Gem, Emerald, and Rockroot, return to Floor 60 of the mines and make your offering. This unlocks the Fire Seal, revealing a new biome and more content in Early Access.
NOTE: Fields of Mistria is currently in Early Access; content is subject to change. This information is accurate as of Version 0.13.0 and will be updated if necessary.
Fields of Mistria is available now on Steam Early Access.