This is a royal court of Djinn. We don't know exactly what this is ade of since it came directly from out of the country. We can't find a mark so I'm not sure if it is silver gold or just metal. What we do know is that they are all royals and grant to perfection!
You get earrings which is two Djinn, Masid and Hidid. You get the necklace which is the Queen Lika and the and the pendulum which is the king Sabinji. The colors that you are looking at did not come out properly and in person it is crystal clear and has color to it. The necklace is done in normal custom and is adjustable.
These djinn are a lot more powerful then your normal run of the mill because they are royal and much more skilled. They also have not been used to death and know their place as in humans first and djinn second. They are friendly, well educated and bred for being superior and they are.
They do the normal things other Djinn do but they do them better and faster. They are much more educated in the behavior of humans and what they need and want. Because of that they are better in results. Also because they are royal they understand caste and were made in that type country so they are serious in what they do.
In thinking about buying a djin or djinn it is best to allow the feelings to come over you and go with what feels right for you. Go with what calls to you!
What can they do? Pretty much what you ask them to do.