-French 1880 Victorian Geometric Signet Ring In 18Kt Gold With Sardonyx
French antique signet ring.
Very unusual signet ring, created in Paris France around the 1880 during the Victorian Era. Crafted with very strong geometric patterns in solid yellow gold of 18 karats with high polish finish.
Gemstones: Mount on top with 1 flat cabochon cut carved from Sardonyx agate of about 13.5 carats.
Birthstone: For the month of August.
Weight: 6,45 Grams, (4.14 Dwt).
Size: 10 and may be easily sized on request.
Measurements: From the top view is 22 mm by 22 mm (0.87 x 0.87 Inches).
Hallmarks: Stamped with French marks, the head of the eagle for the assay and warranty of the gold and the maker's maitre mark inside a lozange cartouche.
Note: Sardonyx combines alternating layers of sard and onyx—two types of the layered mineral chalcedony—to create a reddish zebra-striped gemstone with white bands. Its name, similarly, combines sard (referencing the ancient Persian city, Sardis—in present-day Turkey—where the red stone was found) with onyx (from the Greek word of the same spelling, which meant “nail or claw.”) Sard ranges in color from yellowish-red to reddish-brown, depending on how much iron oxide is present. Sard is easily confused with carnelian, another type of chalcedony that is slightly softer and lighter in color. Sardonyx, like onyx, shows layers of parallel bands—instead of the chaotic, curved bands that compose agate, another type of chalcedony. The finest examples of sardonyx, which display sharp contrasts between layers, are found in India. Other sources include Brazil, Germany, Czech Republic, Slovakia, Madagascar, Uruguay, and the United States. Measuring 6.5 on the Mohs hardness scale, sardonyx is widely available and relatively inexpensive as gems, beads, and jewelry. It is often carved into cameos, intaglios, and brooches to show the color contrast between layers.
Collateral: It is accompanied by a presentation jewelry box.
Condition: The overall condition of this ring is excellent. Beside the little normal wear, there is no damage to the gold. The gemstone is secured in the setting. This piece has been carefully inspected to guarantee the condition and authenticity.
INVENTORY REF: R031023TSCH/.1550
