19th century Portuguese diamond and spinel ring in 19.2k gold and silver

Wonderful Portuguese Shield Ring from the Victorian era.

The ring features six rose-cut diamonds accents and a blue stone that tests as a spinel at the center. The top of the ring is made of silver and the shank 19.2k gold, which is the gold purity standard in Portugal. The silver setting and cut of the diamonds indicates the ring dates from the late 1800s.

Details:

The ring is made of silver and 19.2k gold, which means 80% gold. It is not stamped as it is often the case on Antique pieces.

Condition:

The ring is in excellent antique condition, with some natural oxidization to the silver part.

Measurements:

The ring is a US size 5 1/4, UK size K, French size 50.

Weight: 3.0g

Length of the silver part (shield part) : 18mm / 11/16"

Width of the silver part (shield part) : 14mm / 9/16"

Diameter of the blue stone: approx. 2.5mm / 3/32"