Species origin :
The exact story, if it ever existed, got partially lost with the time, leaving only a few hints behind to try and guess what happened. Most source agree on one story, where a gem bathed in magic energy gained consciousness.


Birth :
It takes at least two individuals of that species to make a stable new born, one can try and do it alone but it has higher chances of failing or creating an unstable personality. In the case where more “parents” are involved, it can increase the newborn starting energy, but this scenario rarely happens.
The parents will draw a focusing circle and start infusing it with magic to synthesize a gem in its center, while also balancing each other magic to try and reach a high stability and better gem shape. The process will often use a lot of energy and leave the parents vulnerable for a few days, depending on their ability to regain energy.

Youth :
To follow the tradition and keep themselves safe, the parents will move away most of the time, trying to stay just out of detection range to watch over their kid without interfering with them, the average watching period lasts about 5 years, and the tradition lets them meet with their kid after 18 years most of the time.
The baby will “wake” and start moving by either rolling or using basic spells, following their instinct. Their first goal will be to find some material to make themselves a body, using at first simple telekinesis to make a shell around the gem for safety. After a while, they can disintegrate a part of the material to scan it, analyse it and get energy from it. Depending on the material complexity they can find how to synthesize it themselves to turn a part of their energy into size. The analysis will also help them to gain more control over the body, allowing the use of more evolved shapes than a simple sphere, letting them use the body to gain in mobility. In most case, the youngs will try many materials before settling for one, and they will keep the previous material analysis stored, making them able to synthesize it and change body in times of need.

Adulthood :
After using the energy reserves they had from their parents, they will look for ways to get energy themselves. The most used way is to simply absorb energy, whether it is sunlight, ambient magic or sometime try and vampirise it from other creatures.
The other way is by disintegrating materials, which can use more or less energy depending on the speed and materials. They can do it externally for materials they already mastered, but in some case they will have to entrap the targeted meal within them to gain efficiency and avoid loses.
Most individuals will simply have their peaceful lives , hidden or mistaken for golems. Some will meet and team up to make a kid, and few of them will actually try and interact with other species.


Behaviour :
As explained before, most of them will have a peaceful behaviour. But in some case, they will copy the shape, sound or behaviour of creatures they find. For example, one might like the body shape of snakes, the sounds of a cat, and the behaviour of a dragon.
When it comes to self defence and survival, most of them will have something ready, with in some case up to 50% of their magic powers being permanently reserved for security spells surrounding the gem, the most used one being the teleportation of the gem with reconstruction, where they would get away without their old body and use a part of the stored energy to make a new one. Since their soul and gem is the most important part of themselves, and they can’t live without it, they also made many spells to keep it safe, making it near impossible to steal it.


Limits :
The size and “mana” of the creature will increase as they get older, some are even said to reach demigod levels of magic after millions of years. But while the age/strength increase works in a similar way to other species, the size/magic is quite different. The body being nothing more than a shell, it requires a certain amount of magic to be kept in a good state and to move. Both the magic used for the body, the size, and the magic used for spells, use the same source, the gem. If the creature uses all the available energy to grow larger, it will be unable to use magic without shrinking down first, and if it wants to keep a lot of magic powers, it will be unable to grow much.
As explained before, they are able to disintegrate materials to gain energy. In some extreme case, they can shrink their own body to get more energy.

Other :
They do not need blood, a heart, lungs or other internal organs since their body is (in most cases) not made of cells. They do not have “real” external organ either, like ears, eyes, nose and other sensors. They are still able to feel and see using spells, which can represent about 5% of their magic power use for 20-40 years old creatures.
Meaning of the name : just searched for chemical elements in gems, and put the letters there.