Title: Ladies Antique Victorian Little English Yellow Gold & Opal Ring
Shipping: $19.00
Artist: N/A
Period: 20th Century
History: N/A
Origin: N/A
Condition: Excellent
Item Date: 1900 to 1930
Item ID: 6030
A Wonderful Looking Little Yellow Gold Antique Victorian Opal Ring. The opal may seem to contain every color in the rainbow, it is just beautiful. An English Gold and Opal Ring. Ring size 6-1/4 9k yellow gold ring set with white opal cabochons, graduated in size from 6mm to 4.5mm, open design on the sides; overall weight 3.3 gm. Condition: Overall good. This is vintage antique jewelry. This kind of jewellery has been made since the time of the Ancient Greeks. It was particularly popular in the eighteenth century, the Victorian era and with Art Nouveau jewellery designers. All of the art is edited and chosen by us for its high quality and workmanship before posting. These collectibles have been selected with the artist & collector in mind. We are committed to enhancing our customer’s lives by discovering creating, and pointing out only the best art we can find in the world today. We Are Taste-Makers, Art Advisers, Consultants & Publishers Of Spectacular Art Stories. Our job is to be intermediaries between buyers and sellers. We are vetting for high end art patrons. We are determined to catalog the world's most exceptional art and share it with everyone.
Link: http://en.wikipedia.org/wiki/Opal
The internal structure of precious opal makes it diffract light; depending on the conditions in which it formed it can take on many colors. Precious opal ranges from clear through white, gray, red, orange, yellow, green, blue, magenta, rose, pink, slate, olive, brown, and black. Of these hues, the reds against black are the most rare, whereas white and greens are the most common. It varies in optical density from opaque to semi-transparent. For gemstone use, its natural color is often enhanced by placing thin layers of opal on a darker underlying stone, like basalt. Common opal, called "potch" by miners, does not show the display of color exhibited in precious opal.
Precious opal shows a variable interplay of internal colors and even though it is a mineraloid, it has an internal structure. At micro scales precious opal is composed of silica spheres some 150 to 300 nm in diameter in a hexagonal or cubic close-packed lattice. These ordered silica spheres produce the internal colors by causing the interference and diffraction of light passing through the microstructure of the opal. It is the regularity of the sizes and the packing of these spheres that determines the quality of precious opal. Where the distance between the regularly packed planes of spheres is approximately half the wavelength of a component of visible light, the light of that wavelength may be subject to diffraction from the grating created by the stacked planes. The spacing between the planes and the orientation of planes with respect to the incident light determines the colors observed. The process can be described by Bragg's Law of diffraction.
