A 3′9″ Pink Diamond who resembles Pink Agate and might be mistook as her if it wasn't for her vastly different colors. Roseanne is the sister of Rosey the Rose Quartz (Quartzkeeper missing an eye since forming), and the one who accidentally brought back a certain now-pink peridot many years ago. Was once bubbled, but was released at an unknown time. Roseanne's usual appearance is a shape-shifted one and finding her in her actual form is often rare. She's generally nervous, and is missing a hand. A Peridot was her first real friend...Bringing them back wasn't intentional back then and she's fearful of almost everything now despite being what she is. 

She does have a shapeshifted disguise: