Spelunking Helmet

These dark steel helmets are shaped in the most predominant factions of a dwarf's head They are adorned with a copper or gold trim, and on their top part, they have an amber gemstone, which irradiates magical properties, within a strong glass-like that they use as a lantern.
Metal Detector:
This item has 6 charges and regains all expended charges daily at dawn. As an action, you can expend one charge to cast the light spell from the gemstone of the helmet, but only with a duration of 10 minutes. In doing so, the light provided by the amber gemstone allows you to locate and analyze geological features with ease.
This magical light outlines in orange tones veins of raw ore, precious gemstones and crystals, or even fossils. This spelunking sense has a 30-foot radius centered on the helmet, and it can penetrate up to 5-feet deep into solid rock.