- "In a way, Ruby was really the first, the Baronne’s prototype, so she claims to count as One, in a class by herself."
- ―Tej, explaining her family[src]
Ruby, of Jackson's Whole, was the oldest of Baronne Cordonah's famous living Jewels. In coloration, she was red and garnet.
When House Prestene overthrew House Cordonah, Ruby's job was to flee to House Fell and seek the Baron's protection. A likely reason for this would be to obtain Fell's assistance in retaking their House.