-Art Deco 1925 Geometric Enamelled Ring In 18Kt Gold With 3.78 Cts Black Opal
An art deco geometric ring.
Exceptionally beautiful geometric ring, created during the iconic period of the art deco, back in the 1925. This colorful ring personify the deco period and has been crafted with an octagonal shape in solid yellow gold of 18 karats with polished finish. The design show very strong deco patterns and is embellished with applications of green, black and purple enamels, all is reinforced with one multicolored opal gemstone. The opal has a very nice "pin fire" pattern with an unusually generous amount of blue/green/purple play of color.
Gemstones: Mount in the center with one oval cabochon cut (15.3 x 11.2 x 4.1 mm) of a natural black opal of 3.78 carats, no crazing, scratching or pitting to opal.
Weight: 7.65 Grams, (4.91 Dwt).
Size: 6 sizeable.
Measurements: 23 mm by 18 mm (0.91 x 0.71 Inches).
Hallmarks: No marks, tested for 750/.999 Au, 18 karats yellow gold.
Note: The opal, is gem quality, translucent with a perfect oval cut and a phenomenal play of multi colors. These kind of Opals have a reputation for being one of the most expensive opals in the world.
Note: Precious Opal like this are rare, opalescence refers to the optical phenomena displayed by the mineraloid gemstone opal (hydrated silicon dioxide). However, there are three notable types of opal (precious, common, and fire), each with different optical effects, so the intended meaning varies depending on context. The optical effects seen in various types of opal are a result of refraction (precious and fire) or reflection (common) due to the layering, spacing, and size of the myriad microscopic silicon dioxide spheres and included water (or air) in its physical structure. When the size and spacing of the silica spheres are relatively small, refracted blue-green colors are prevalent; when relatively larger, refracted yellow-orange-red colors are seen; and when larger yet, reflection yields a milky-hazy sheen.
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 opal is secured in the setting. This piece has been carefully inspected to guarantee the condition and authenticity.
INVENTORY REF: R121722MTMS/.1841
