I love watching the show Steven Universe so I was pretty much obligated to create my own gemsona. Pearl is the birthstone for June, which is my birth month, but there is already a main character for that so I chose the other option for June's birthstone which is moonstone. "The moonstone is actually the feldspar variety known as 'adularia', a potassium aluminosilicate of gemstone quality, which is also found in the European Alps near the Adula Group – hence the name 'adularia'. "- gemstone.org. I didnt want her name to be moonstone, so I looked up everything I could about the stone and decided to name her Adularia. 
Since she is also a birthstone for June, I decided to make her and Pearl sisters. Kind of going with gemini on that, making two of them. Her color design is the same as Pearl's, but in a different order of course. Adularia is also a bit clumsy, unlike Pearl. With her gem on her forehead like Pearl, this means both character's Chakra is very focused and precise. Adularia is focused just not as much as Pearl and she has to be careful because moonstones are easily broken.
  Another quick note is that on Adularia's moon axe there's a dreamcatcher. Later on in the story,  Adularia realizes she can expand the dreamcatcher to be pretty huge and use it to transform some corrupted gems to their original form.