A Victorian 18ct gold turquoise and diamond ring

A Victorian 18ct gold turquoise and diamond ring.
 
The ring is Hallmarked with the Birmingham Assay office mark, and has the 1878 datemark.
 
At the center of the ring there is a single old hand cut diamond with an approximate carat weight of 0.10ct's.
This is then surrounded by six round cut blue turquoise gemstones which each measure 3 x 3mm's.
Both shoulders contain splendid hand detailed engraving, and this ring is in remarkable condition considering it is over 140 years old.
 
Finger size M, and this ring can be made bigger, or smaller by our head Goldsmith, if required.