Sapphire
Gem (Corundum) family / Magic material type
Habitat: among the Elites.
Disposition: calm, devoted, poor expression of emotions, varies (vindictive towards witches)
Diet: male spirit energy
Rare Gem mamono of nobility class. They have slender, small bodies and a single eye. Most have calm personalities and never attack men. They have the ability to look into the future using their "future vision". Unmarried individuals have limited capacity of future vision and to improve it, they need to get spirit energy.
When a new payload of potential husbands arrive, the Sapphires have sex first. Sapphires are promiscuous, having sex with every consenting man they see. During these times, they use their future vision to predict what Gem mamono like which men before releasing them nicely. If her future vision tells that the man likes her, she will secure him as her onii-chan.
During sex she uses all of her body to please the man, often with the dress still on. They don't wear anything underneath their dresses. From the outside, it looks pretty much like a girl in a dress sitting on a man so it's pretty hard to tell if she's actually having sex or not. Their emotions are often difficult to distinguish.
Their future vision is not only used to predict events in the big picture, but also to improve sex with men. If they use their future vision to predict a man's fetishes, they can change their behaviour or even summon monsters bigger than her in order to deliver maximal pleasure. If they use their future vision to predict their husband's libido, they can determine how long to have sex for.
If stressed or startled, her body freezes up. She loses control of her ice powers and her husband becomes chilled and lonely. Often leaving him starving of love and thus seeking to copulate with the frozen Sapphire to melt down the ice encasing her.
The more her onii-chan has sex with her, the better her future vision. As she feeds on his spirit energy, her future vision becomes clearer and can see farther in time and could eventually lead to having the capacity for multiple futures if her marriage is continued.
The Sabbath often steals them from the Kingdom, due to having a childish charm greater than that of her more common counterpart the Ruby. Because they are so rare and precious, they are notoriously intolerant of the Sabbath, and will take her angers by attacking witches in the manner of a sexual predator.
Padparadscha Sapphires are an uncommon pink-colored variation that are cheerful, bright and very lustful. They don't aggressively attack men, but they are exceedingly kind and have tactics to actively charm and seduce men like prostitutes. Even an individual with late predictions can be corrected by having lots of sex and sipping spirit energy until their predictions are up to standard.
Notes:
Although Sapphires are mostly harmless, they can lead men into or summon mamono more ferocious than her.
They are childlike in appearance, however their disposition is mature in a manner befitting of a prophet. Wise beyond their years.
Gently stroking their gemstones while telling them how beautiful and precious they are can very easily cause them to go wild with lust.
Sapphires are also commonly flanked by several Ruby guards. Despite the Ruby's low intelligence and the fact that they are primarily interested in sex.
Primarily, Sapphires use their future vision to assure other Gems of the future's certainty, since they can only see one possible future. While this is true, monsterization has however redirected their abilties towards sexual matters (sorting husbands for gems, acquiring husbands, detecting kinks and tastes, determining how long to mate for and improving sex with men in general).