2.31 Ct. Cobalt Spinel from Ceylon (Sri Lanka)

This exceptional transparent 2.31 carat oval purplish blue cobalt spinel measures 8.97 x 6.92 x 5.14 mm, and it is masterfully fashioned with a mixed brilliant cut that balances table brilliance and pavilion depth to maximize face up color and sparkle. The clarity is very very slightly included when evaluated at eye level, which translates to excellent visual purity for settings where the stone is viewed directly, and the excellent polish enhances light return across the facets. The color intensity is dark and richly saturated, a hallmark of cobalt bearing spinels from Ceylon, Sri Lanka, and the stone is completely natural with no enhancement, a factor that significantly increases its appeal to discerning buyers who place a premium on untreated provenance. From a connoisseur perspective, the combination of transparent clarity, deep purplish blue tone, and original Ceylon origin makes this spinel a rare, investment quality gem that performs beautifully in both classic and contemporary jewelry designs.

Durability is a key reason this cobalt spinel is ideal for daily wear, the mineral spinel rates around 8 on the Mohs hardness scale, offering excellent resistance to scratches and abrasions for everyday rings, pendants, and bracelets, and spinel also has good toughness against chipping when set with a secure mounting. Because this stone is unheated and untreated, its color is stable under normal light and temperature conditions, which adds confidence for routine wear, and routine care is simple, warm soapy water and a soft brush for cleaning, and professional settings with secure prongs or bezels will protect the stone in active use. For comparison, if you are considering combining this piece with an opal, a White Opal has a delicate, pearly body color and a unique play of color caused by silica spheres, however White Opal is softer with a Mohs hardness closer to 5.5 to 6.5, and it requires more protective settings and careful wear to avoid scratches and sudden impacts. The Natural Gemstone Company stands behind the gemological details provided, and this cobalt spinel pairs exceptionally well with durable metal choices, making it a superb, wearable treasure for the educated buyer seeking long term enjoyment and investment quality in fine colored gemstones.