Cobalt blue spinel

Gemstone: Cobalt Spinel

Weight: 10.50 ct

Color: Vivid / Electric Cobalt Blue – Top Color Category

Cut: Smart-cut (near-optimal pavilion, minimal window)

Clarity: Eye-clean

Treatment: Natural, unheated, untreated

Why This Stone is Special:

•Top Color Cobalt Blue: Extremely rare vivid cobalt blue with high saturation

•Collector-Grade: Living, color-reactive stone – color changes slightly with light

•High Cobalt Content: Gives deep, electric blue flashes and strong light absorption

•Smart Cut: Maintains optimal size and brightness; re-cut not recommended

•Size 10.50 ct: Very rare for cobalt spinels, highly desirable for collectors

Visual Appeal:

•Soft daylight → bright cobalt flashes

•Harsh light → deep royal blue

•Indoor light → facet-to-facet blue sparkle

Notes:

•Small pavilion window does not reduce value; part of the natural character

•Perfect for collectors, high-end jewelry, or display

Summary:

This is a top-color, collector-grade cobalt spinel with rare size and vivid electric blue color. Its natural light-reactive beauty and high cobalt saturation make it a unique addition to any collection.

💡 Ideal for collectors or bespoke jewelry settings that showcase its electric blue flashes.