Spinels are a kind of jewel that are usually red or blue.
Spinels are often seen as valuable and beautiful.
Examples:
She wore a necklace with red spinels.
The ring has blue spinels in it.
I like the shiny spinels.
The spinels sparkle in the light.
The spinels are the most beautiful jewels I've ever seen.
I want to have a crown with lots of spinels on it.