Burmese Blue Sapphire 1.03ct | Untreated | Mogok Origin | UK
- Price
- $4,207.43
A 1.03ct natural untreated blue sapphire from Mogok, Myanmar — untreated with slight inclusions. Just over the 1ct mark, with a 5.7 × 5.3mm face-up and a clean Mogok origin. No heat treatment. Sapphire's hardness of 9 makes it the most durable of the commonly set coloured gemstones, and the untreated status eliminates one of the most common concerns in sapphire purchasing.
Product Details
- Colour: Blue
- Weight: 1.03ct
- Origin: Mogok, Myanmar
- Clarity: Slight Inclusions (AA)
- Dimensions: 5.7 × 5.3 × 4.2mm
- Mineral: Natural Sapphire (Corundum)
- Hardness: 9 (Mohs scale)
- Treatments: None
- Product Code: J004
Our Clarity Grading
- AAA+: Loupe-clean
- AAA: Eye-clean (no inclusions visible to the naked eye)
- AA: Slight inclusions
- A: Moderate inclusions
Why Untreated Mogok Sapphire?
The 1ct threshold in untreated Mogok blue sapphire is commercially significant — stones below 1ct are more readily available; above it, the supply of genuinely untreated natural blue from Mogok thins quickly. This stone crosses that threshold cleanly at 1.03ct, with a Mogok origin, no treatment, and a practical face-up size. For jewellers sourcing a blue centrepiece for an engagement ring or bespoke commission, an untreated Mogok sapphire at this size offers a credible, transparent, and durable choice that customers can understand and value.
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.