18th C. Table Cut Diamond Ring
Early forms of diamonds are fascinating. First on the scene was the pointed cut, which poetically was referred to as "a writing diamond" for it point which supposedly could be dipped into ink and used as a quill point. The next type was the example illustrated here, that of the table cut with a flat top facet and one on each side appearing as a bevel. This cut was used primarily in the 17th and 18th century.
This table cut diamond is in a typical dome with a pie crust edge and set closed back in a rub over style. The visible parts of the diamond are 4 mm by 4 mm. Please note that closed back set diamond weights are not calculated, as the depth is not able to be measured. The mount itself is 14k to 15k rose gold over silver and the replaced but early shank is 14k to 15k rose gold.
Date: Circa 1770, shank is antique but later.
Measurements: 3/8 of an inch (1.0 cm) in length north to south on the hand and rises 1/4 of an inch (0.8 cm) in height off the finger. Weight of 3.1 grams (2.0 dwt).
Ring Size: US 5-3/4 (UK L; Euro or Int. Circum. 51.2 mm; Int. Dia. 16.3 mm; Japan over 10) and easily can be sized to fit most. Ring sizing information.
Condition: Very good for its age. Diamond has not been removed and reset as its rub over gold and silver collet is air tight; shank has been replaced with later but antique shank; connection points show small traces of silver solder.
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