Shasta was surprised; just by looking at the quality of the gemstone, she knew its worth was extraordinary. It was pure and flawless, seemingly white, but internally, it emitted a faint blue glow.
These gemstones were themselves of great value.
A certain kind called Red Agate could provide a continuous source of warmth to its wearers, preventing their bodies from stiffening in the endless snow and ice.
Therefore, Red Agate was expensive, and wars had erupted over this miraculous gemstone, not just among pirates but also among the Nobles of the Northern Land.
She had come in a hurry, with no time to find a Red Agate, so she had to come with her body exposed—her clothes and black robe were nearly useless against the harsh environment, completely frozen through, held up only by her spells.
Ice Jade Marrow couldn't provide heat, but it could reduce the damage from wind and snow to the wearer, maintaining a certain constant temperature.
In some sense, the effect was the same.