Estate 10K Diamond Halo Engagement Ring Rotten We are unsure what this

We are unsure what this red stone is

Moonstone measures 3/8" W x 1/4" L

enamel detail throughout and it sits on a small pedestal

The watch runs mechanically with a 17 jewel movement and is would with an omega branded crown on the right side of the case

Estate 10K Diamond Halo Engagement Ring Rotten We are unsure what thisA timeless 10K diamond halo engagement ring. Crafted in 10K white gold, this amazing design is centered with . 18CT brilliant diamond wrapped in a teardrop shaped frame encrusted with 21 single cut diamonds. The design has an Art Deco influence and is sure to capture the heart of a anyone with vintage taste. The inner band is hallmarked '10K KS' and the gold has been acid tested for authenticity. This piece has been appraised, confirming natural