As one of the rulers of Homeworld, Yellow Diamond's of massive size, her height dwarfing almost all other Gems. She has light yellow skin and she has black markings around her eyes, dark yellow eyeshadow, bright yellow eyes with diamond-shaped pupils and black eyebrows, and short, helmet-like bob yellow hair with two spiked tips. Her gemstone is located in the center of her chest. Yellow Diamond wears a bodysuit consisting of a yellow top half and an olive bottom half with a cutout for her gemstone, enormous yellow shoulder pads, yellow gloves, and olive-yellow, high-heeled boots. It can be assumed that Yellow wears a long overcoat that hangs past her knees when she is on Homeworld. Yellow Diamond as a perfectly logical and rational leader, though in reality, she is vindictive and quick to anger. Yellow Diamond has a dangerous and lethal temper, treating an act of disrespect against herself or her fellow Diamonds with aggression and violence. It is also shown that she and Blue are in fact miserable because of White's controlling and perfectionist nature. She is also seen to have a huge soft spot for Blue Diamond.

White Diamond is shown to be about a head taller than her fellow Diamonds. She has white skin, white spiky hair in a shape similar to a pentagram star, light gray eyes with diamond-shaped white pupils, large and full black eyelashes, light gray eyeshadow, black fingernails and shiny black lipstick. Her body constantly radiates a bright light which probably makes her gemstone barely visible while her other features are visible because they're either black or have black outlines. Her gemstone is located on her forehead and is a side view of a round-cut diamond. White Diamond wears a white leotard with a gray top that runs from her neck to her chest, forming a triangular shape at the center of her chest with two lighter gray stripes spreading out from underneath either side of the shape, with the triangle connecting to a four-pointed star shape at her navel. She wears white and gray shoulders pads. She also wears a long transparent white dress that reaches the floor and slit up both sides to her thighs, a sleeve-worn translucent cape with black and gray stripes embedded with glimmering diamond fragments and star designs, as well as a pair of intricately detailed high heeled dress sandals. White believes that because her Gem channels white light, she is essentially a Gem light-form all the time. All Gems are made of light, and she is light manifest. She sees all Gems as her, sees herself in all Gems, and judges them as she would judge herself. She believes she is everyone—which is why she speaks for everyone.