Fyxiirandia - F1
Variiyaxari - G9
There were two stars, an F1 and a K0. They were separated by about 8 AU. The F1 Star went red giant.
Then the F1 Star casted off its outer layers. the remnants of the F1 Star was a 6.5 Earth mass diamond coated in 2.8km of Liquid Metallic Hydrogen.
The K0 Star Absorbed approx 0.2 Solar Masses of Hydrogen, Helium, Oxygen, Carbon, and Lithium.
It swelled into a G8 Star.
Now there are lots of Debris of the F1 Star in orbit around the G8 Star.
There is also now a gas giant in orbit around the G8 Star
The Therosans have started mining away the liquid metallic hydrogen to get to the 6.5 earth mass diamond.
Unreal? who cares!