apperances: yellow daimond swap au as blue daimond

name: Sienna Diamond/ grey quartz

Gemstone placement: On Her Pinky Finger 

what she weilded: An Foil (Fencing Sword)

pearl: sienna pearl

apperance:As one of the rulers of Homerworld, Sieanna Diamond has a massive size, with her towering height making her own pearlappear tiny in comparison. However, her somewhat hunched posture, combined with her long, sweeping cloak, gives her a relatively smaller and more despondent silhouette than if she were standing straight.

Her complexion is azure, and she has long, straight, alice blue hair which curls inward at the ends. Two noticeable and symmetrical locks of her hair curl and point inwards towards her face just below her cheekbones. A unique feature of her hair are two lengths of that lead from each side of her head and physically connect on her chest just below her gem, giving it an almost shawl-like appearance. She has a long ovoid face, a full upper lip, and a straight nose. She also possesses large, sad, downward-slanting eyes with bold mascara on the lower lashes, giving the appearance of a weeping woman – most likely due to her depression over the supposed shattering of Pink Diamond. Her irises are White with black diamond-shaped pupils and she has thin arching eyebrows.

Her gemstone is located on her Pinky finger a, and she wears a long Bubblegum blue cloak that touches the ground. Underneath the upper part of her cloak, she wears a navy blue hood. Her height is similar to Pink Diamond, only obscured by her hunched posture making her look shorter.

personality:Sienna Diamond's temperament appears to have changed significantly in the 5,000 years following the supposed shattering of Yellow Diamond. She fell into a prolonged state of grief and depression upon believing Yellow Diamond was shattered. She is unable to let go of the past, becoming fixated on preserving Yellow Diamond's legacy. Her efforts to maintain the late diamond's zoo, save Earth specimens from the Cluster's emergence, and her refusal to shatter the Maigold  Quartzes that once served under Yellow Diamond shows this behavior. She continues to regard the Earth as Yellow Diamond's colony, and, due to being unaware that the Cluster is bubbled, is visibly saddened by the fact that the planet will eventually be destroyed.

Additionally,Sienna Diamond seems to not understand humans, given by how she was surprised that Greg was able to comprehend and sympathize with her pain of losing a loved one, in addition to displaying an apparent unawareness of masculine pronouns, though this is understandable since she is not native to Earth and has had very little reason to get to know humans.

Sienna Diamond, as shown in the episode "The Trial", is extremely diplomatic. Against Pink Diamond's wishes, she allowed Steven to continue making his case during his trial, though she did lose her temper when his recounting of events differed. She nonetheless seemed to want to hear the Defending Zircon's theory on how and why Yellow Diamond was shattered. When Pink Diamond snaps and poofs both Zircons present at the trial, Sienna Diamond confronts her and scolds her for not having enough restraint to hear the case out. This shows that Sienna Diamond may be as merciful and forgiving as her gems claim – at the very least, she certainly has greater respect for due process and an interest in the truth.

qoutes:

Marigold Quartz... so you escaped Homeworld and crawled back here. This is Yellow's world! How dare you use it as your hiding place?! Come! Answer for what you've done!

Its you,yellow!

I'm so glad you're back... Steven.
Steven: Y-You actually said my name!
Steven. Steee-von? It's such a funny sounding name. You're so creative, Yellow. Remember when I let you name that batch of Pyrope "Fool's rose?" Blue was furious!

Do you remember the game we used to play here? We had such fun together -- You and I and Pink and Blue. You would stand underwater, all the way at the bottom, and sing. And we would be above the surface trying to guess the song.

Steven: Can we do that right now? Maybe after, we can talk Blue into coming back to Earth with us.
No. We stopped coming here together after you left. That was the start of Era 2. No one wanted to be here -- not with your empty spot. It was so quiet.