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A doublet is a type of assembled gem composed in two sections. [1] It is sometimes used to imitate other, more expensive gems. Opal Doublet. A garnet and glass doublet uses a top portion of natural garnet fused to any color of glass to imitate a gem. The color of glass used in the doublet is all that is seen, as the garnet provides no color.
A 17th century English lapidary text. The etymological root of the word lapidary is the Latin word lapis, meaning "stone". [5] In the 14th century, the term evolved from lapidarius, meaning 'stonecutter' or 'working with stone', into the Old French word lapidaire, meaning 'one skilled in working with precious stones'.
A doublet is a type of assembled gem which is composed of two parts. A false doublet is a doublet which is a glass piece that looks like a real gem and a real gem that have been attached to look like a larger gem. [5] A triplet is a type of assembled gem composed of three distinct parts. [5]
This is a descriptive list of Stone Age art, the period of prehistory characterised by the widespread use of stone tools. This article contains, by sheer volume of the artwork discovered, a very incomplete list of the works of the painters, sculptors, and other artists who created what is now called prehistoric art.
Classically the designs carved onto cameo stones were either scenes of Greek or Roman mythology or portraits of rulers or important dignitaries. In history, agate portrait cameos were often gifts from royalty to their subjects. These antique cameos, some more than 2000 years old, are either displayed in museums or are in private collections.
Because strontium titanate and glass are too soft to survive use as a ring stone, they have been used in the construction of composite or doublet diamond simulants. The two materials are used for the bottom portion (pavilion) of the stone, and in the case of strontium titanate, a much harder material—usually colorless synthetic spinel or ...
Hardstone carving, in art history and archaeology, is the artistic carving of semi-precious stones (and sometimes gemstones), such as jade, rock crystal (clear quartz), agate, onyx, jasper, serpentinite, or carnelian, and for objects made in this way. [1] [2] Normally the objects are small, and the category overlaps with both jewellery and ...
The wide variety of stones made in their early history could be explained by this as Wardle H. Newell says, "should this group of problematical stones prove to have been personal, as I suspect, the great variety of form would be inevitable". [10] "Innovations" speak of new ideas entering already existing societies and merging with pre-existing ...