My friend sticksthebadger has the information about these gems since she helped me come up with information on the gems like some notes and such, the gems are amazonite, cat's eye scapolite, and their Fusion Tiger's Eye
(Her appearance is the Gem in the middle but her color palette is the same as the Gem to the far left)
Cat's Eye Scapolite stands seven feet tall. She has plump lips, a small, upturned nose, and brown scale-like crystals on her left bicep. Her scleras are bright yellow with black diamond shaped pupils. She has a small gap between her front teeth and black eyebrows, and black markings around both her eyes. Her gemstone is on her forehead (shaped like that Gem's gem in the middle/colored like this), and her weapon is a cat o' nine tails whip.
(Her appearance is the Gem to the far left but her color palette is the same as Malachite's)
Amazonite stands seven feet tall. She has light teal eyes with vertical pupils, plump lips and sharp, pointed teeth. Her pale green hair is styled into a short bob with two spiked tips. Her skin is light seafoam green with dark teal stripes, and she sports a single tattoo-like marking of a triforce pattern on her left shoulder in greenish-black. Her gemstone is over her heart (shaped like this/colored like this), and her weapon is a machete.
(Her appearance is the Gem to the far right but her color palette is the same as Sardonyx's)
Tiger's Eye stands ten feet tall. She has vermilion skin with reddish-orange markings on her face and arms arranged in a pattern resembling tiger's fur. She has two functioning mouths, amber eyes with black scleras (in other words, the whites of her eyes are colored black), teeth like a tiger's, a shapely and pointed nose and thin lips. Her hair has a pale peach/apricot color and resembles a pixie-cut in the front, while in the back, her hair leads to a point. Extending from off the sides of her hair are two small chin-length bangs in the front. Her weapon is a urumi.