Spinel

Spinel (スピネル, Supineru) is one of the Gems debuted in the Comet Origin Sensation illustration book. They were taken away before the beginning of the story.Spinel's only appearance is in the Comet Origin Sensation illustration book.
They have dark red features. They have very short hair parted down the middle. They are seen carrying two small weapons, this could mean that they dual wield them and suggests they were more nimble than they were physically strong.As stated in the Comet Origin Sensation artbook, Spinel has an honest and tricky fighting style and a penchant for collecting insects.