During the Late Victorian or Aesthetic period (1885-1900), jewelers used diamonds and feminine, bright gemstones such as sapphire, peridot, and spinel. Star and crescent designs as well as elaborate hat pins were also popular. Some scholars believe the aesthetic era began sooner, in 1875, and ended as early as 1890.
The name agate is derived from the Achatus river in Sicily (now named the Dirillo river) where large amounts of this gem were discovered as early as 300 BC. During the Gallic wars, agate deposits were discovered along the Nahe river (a tributary to the Rhine) in Germany. The gem-cutting facilities set up there by the Romans survive to present day and, although the deposits are now depleted, Idar-Oberstein – on the Nahe river – is still the major lapidary center of Europe. Today the agates cut there are imported from Brazil and other locations.
Topaz is a gemstone which, throughout history, has shared its name with all other yellow gemstones. It was not until the mid 18th century that the name was assigned to the aluminum fluor-silicate that is uniquely topaz. During the 16th century Cellini described a (most probably) yellow sapphire as “topaz”. Due to its close resemblance in color to citrine, yellow to orange “actual topaz” were termed “precious topaz” to distinguish between them. Topaz comes in many hues, from colorless to yellow, blue, brown, red and everything in between. The colorless and pale blue stones are most abundant in nature, followed by yellow and brown stones, while the golden-orange, pinks and reds are most rare. The latter are mostly mined in Brazil.
Because of the softness of pure (24k) gold, it is usually alloyed with base metals for use in jewelry, altering its hardness and ductility, melting point, color and other properties. Alloys with lower carat rating, typically 22k, 18k, 14k or 10k, contain higher percentages of copper or other base metals or silver or palladium in the alloy. Copper is the most commonly used base metal, yielding a redder color.
Authenticity, antiquity, decorative periods, vintages and or circa dating are determined to the best of our ability based on materials incorporated, methods of manufacture, design, hallmarks and signatures, lapidary techniques, technological developments and consultation of our extensive reference library and materials. Dating and period attributions are not an exact science as decorative periods frequently overlap and borrow influences from one another.
Some of our pieces are mounted in a way that makes it difficult to determine a precise stone’s grading. Diamonds and colored gemstones that cannot be removed from their vintage settings without harm to the piece are evaluated in their mountings using industry-standard measurements and formulas. Jewelry descriptions and all carat weights stated represent approximates. Mounted stone(s) is/are graded only insofar as mounting permits observation. All diamonds shown on our website are natural, untreated diamonds.
Most colored gemstones (i.e. rubies, sapphires, and emeralds) are commonly treated to enhance colour or clarity. This has not been researched for this specific item.
We cannot guarantee that the color you see matches the item color, as the display of color depends, in part, upon the type of computer monitor used to observe the image.
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