Black Opal

Black Opal is a former antagonist and former enemy of the Crystal Gems. She is one of the remaining servants of Black Diamond. She attended the Diamond Ball as Black Diamond’s “Pearl” along side Black Spinel and Black Sapphire. She made her first appearance in “Who are you?”
Description
Previous
She is a tall slender gem similar to a Pearl. In her previous form, her hair was light grey and her gem was grey. She wore black slippers with dark grey shorts followed by a light grey tulle skirt with a grey tank top with a grey triangle at the neck. Her hair was loose and down.
Current
She is still a tall slender gem. Her hair is black and her gem is black with specks of colours. She wears black runners and dark grey leggings. She wears a black tank top with a light grey triangle and a short grey jacket. Her hair is up in a ponytail with a black bobbin.
Personality
Debut
She was shy and quiet and respectful. She only did poofed one gem before turning into an antagonist. She really cares about her Diamond in the episode “I hate you, Pink” when the Diamonds shattered Black Diamond.
Previous
She was an insane gem and one of the main antagonists of the Crystal Gems. She planned to shatter the Crystal Gems and the Diamond Authority and resurrect Black Diamond. After becoming friends with the Crystal Gems, she became a protagonist.
Current
She is a friendly, social gem and is nice and is an ally of the Crystal Gems. She is still friends with Black Diamond. 
Fusions
When she fuses with Iolite, they become Taaffeite
When she fuses with Tourmaline, they become Fire Opal
When she fuses with Iolite and Tourmaline, they become Dark Aura Quartz
When she fuses with Steven Universe (CANON), they become Pink Opal
When she fuses with Jade, they become Idocrase
When she fuses with Hairstone, they become Orange Spessarite.
When she fuses with Ice (Gem Crust), they become Sodalite.
Relationships
Steven Universe
She shares a good relationship with Steven.