Cognac Mogok Spinel 0.67ct | Untreated | UK

A clean, eye-clean cognac spinel from Mogok at 0.67ct — compact, well-proportioned, and entirely natural. The 5.0 × 4.9mm nearly-round face-up gives this stone a versatile outline suited to a range of setting styles. The warm cognac tone has golden undertones and no treatment history whatsoever.

Product Details

• Colour: Cognac
• Product Code: C0022
• Origin: Mogok, Myanmar
• Weight: 0.67ct
• Clarity: AAA — eye-clean, no inclusions visible to the naked eye
• Dimensions: 5.0 × 4.9 × 3.3mm
• Mineral: Natural Spinel (MgAl₂O₄)
• Hardness: 8 (Mohs scale)
• Treatments: None

Our Clarity Grading

• AAA+ — Loupe-clean: no inclusions visible under 10× magnification
• AAA — Eye-clean: no inclusions visible to the naked eye
• AA — Slight inclusions
• A — Moderate inclusions

Why Cognac?

Cognac spinel is a warm, earthy colour that sits outside the conventional gemstone market — which is exactly what makes it appealing to designers and collectors who value character over familiarity. Eye-clean at 0.67ct with Mogok provenance, this stone represents genuine value in an unusual colour category. The golden-brown tone works well in rose gold and yellow gold settings, giving a jewellery piece warmth and distinction. No treatments. No enhancements.

About Natural Spinel Gem

We specialise in natural untreated spinel, sourced directly from small-scale miners in Mogok, Myanmar — one of the world's most celebrated gem origins. Gemstones are hand-cut locally. All gemstones are available for private viewing across London at your business premises or by appointment at Hatton Garden.