Estate 18K White Gold Cushion-Cut Color Change Spinel Halo Ring with Diamonds

An estate modern color change cushion-cut spinel and round diamond halo ring set in 18k white gold. Circa 2000.

Vintage & Estate Collection
1 cushion-cut color-change spinel: 4.16 total carat weight
AGL: Origin: Ceylon (Sri Lanka) , Not treated or Enhanced
Color: grayish blue – light pink
98 round brilliant-cut diamonds: 0.59 total carat weight (stamped)
H-I color, VS1-VS2 clarity
Size: 6.25 – alterable