An astounding 16mm x 12mm (0.64"x0.48") Octagon cut Flawless Synthetic Aquamarine stands prominently in this Beautifully designed Antique style basket setting held securely at each corner. This is such a Beautiful stone which has been expertly Octogan cut so that the excellent clarity of the stone is easily visible and the Cool Sea Blue color is very calming, whats more it weighs a staggering 12ct. Completely made from High Quality Nickle Free Solid English Sterling Silver. The ring has been Fully Hallmarked in London, by the London Assay Office – Solid Sterling Silver (925, the Leopards Head and the Royal Lion), the Full British Silver Hallmark.