Magnificent and scarce 18th century Navette Bague Au Firmament ring circa 1780.
I must admit I’m not always a Navette lover, but this one I adore because the ends are gently rounded and the body itself is nice and chunky.
The blue Bristol glass is set with seven ‘stars’ - I’m sure you all know by now that ‘Bague Au Firmament’ means a ring that depicts the night sky, the diamonds as stars. 
The largest star at the rings centre is a foiled rose cut diamond with a really high profile and a silver collet setting that look like rays of light. The second largest pair are set at the top and bottom tip, with four further smaller stars set in between (all rose cut diamonds) 
The face measures 35mm x 20mm, the  curved back of the ring and the trefoil shoulders all made from a high carat rosy yellow gold. 
Weighs - 7.6g 
In excellent condition