Elemental artefacts

This are drawings of 6 artefacts my DSA group will search for in a great campaign. The story behind them bases on an official legend, but the artefacts and their fate is my own story.
The artefacts equate to the 6 elemetents of the Dark Eye: ore/stone, air, water, fire, humus and ice. Each of them is inhabited by a djinn of the respective element an gives the carrier of it some elemental characteristics or skills.
They are all created by an ancient elementalist called Sahib al-Sitta or the Master of the Six. Normally an elementalist can't cope with the contrary elements like water and fire. But few times in centuries a mage is born, who can handle all 6 elements and who is able to heal the world of demonic peversion of the elements. The artefacts are hidden scattered all over Aventuria and when they are assambled at one place in a ritual, a new Master of the Six will be born.

The vambraces are inhabited by a djinn of stone, who gives the bearer a kind of invisible armor an makes him stoical like a stone, but they are heavy and make him dull.

In the harp live a lively air djinn who makes the harp levitate and play in the wind. It makes the one who carry it swift, but also daydreaming and restless.

The goblet is made of nacre and silver and it shimmers in a cool light. In it lives a melancholic water djinn, who permanently produces drips of water in the goblet. The bearer gets an empathy for other people and can breath under water but he becomes changeable and a strong wanderlust.

The lantern is logically inhabited by a fire djinn, an explosive but friendly character. He always makes for enouth light, but can burn its bearer in anger. The lantern makes the bearer fight better and resist heat, but he becomes as explosive and combative like the djinn.

In the wooden jug lives a friendly guru-like humus djinn. He tries to teach his bearer to respect live in all his forms, the circle of live and how to live. The bearer becomes pacifistic and sensitive to cold (in DSA the counterpart to humus is ice as the pair life and death). But he gets more vitality and his wounds heal faster. Additional he gets patient like a long living tree.

The last artefact is the crystal dagger, that is formed like a crystal of ice. This weapon is sharp as hell an makes things freeze. The ice djinn is totally unfeeling, very logical and rational. It doesn't consider his bearer, so this thing is very dangerous. It costs a part of the vitality to bear it, but it makes him harder and unsusceptible to the cold.

I hope you like my ideas and I look forward to see my players deal with the different personalities of the artefacts.