Art Deco Era Blue John & Silver Ring
Highly prized and no longer mined, Blue John is a rare gemstone. Only found in the United Kingdom, the mine where this gorgeous mineral was originally discovered is now defunct; and those few specimens that are found are quite inferior and pale in color.
The banding and coloration is rather distinctive in all examples as the mineral is found in veins rather than in a single concentration. Used in jewelry and for decoration since the mid 1700s, this specific piece is quite large and displays a rich deep purple color with a banded circumference of a light yellow undertone. The oval stone is set into a tasteful silver bezel and ring mount with the type of typical ornamental border employed by several English jewelry manufacturers, including Thomas Mott.
Measurements: 1-1/16 inches (2.8 cm) in length by 13/16 of an inch (2.3 cm) in width. Weight of 6.5 grams (4.2 dwt).
Ring Size: 5-3/4 (UK K-1/2; Euro 16.25; 51.25 mm) and can be easily sized. Ring sizing information.
Condition: Excellent; light wear to the silver as expected with age and use.
Date & Origin: Circa 1930 and is English in origin.