Opal doublets and triplets are thin slices of opal which are bonded to a matrix and sometimes covered with a quartz top (triplets).
Opal is rarely impregnated with colorless oil, wax and resins. Triplets are covered with colorless quartz.
This is technically a doublet ... a thin layer of natural, precious Lightning Ridge opal on
an ironstone base. This opal is found in seams running through the host rock, and sometimes
the opal seams are a bit too thin to cut solid stones. One side is ground off and polished, ...
Doublets and Triplets
Most gem lovers are familiar with doublets and triplets, especially the opal variety. Opal frequently occurs as thin seams of material within a host or matrix rock. Although beautifully colored, such deposits are so thin and fragile as to be useless for jewelry.
Doublet Opal - A thin piece of natural clear crystal opal showing color is glued to a piece of natural black potch (common opal showing no color) or iron stone (the base of boulder opal). This combination is then cut and polished.
A doublet is a layered gemstone with two layers cemented or glued together. This technique is often used with Opals to create a gem from a thin vein of precious Opal which would otherwise be too fragile to use.
Doublet A doublet is a gemstone composed of valuable gemstone material in combination with other materials. It is found most often in opal, where an opal doublet contains a slice of opal glued to common opal, glass or other material.
This type of synthetic rubies are not much in vogue nowadays. However they make great gifts. Doublets are usually stones of imitation backing with a natural corundum crown, generally made out of green or white corundum. When viewed carefully the joint made with glue can be noticed.
A stone consisting of two separate layers
Abbreviation for pennyweight
"Dog collar" meant for daytime wear which is usually made of a soft material laced to a series of jeweled bars ...
An assembled stone of two parts. Colorless cement or heat is used to join the parts together. Often used with Opals.
The combined characteristics of hardness, toughness and stability in gemstones. One of the deciding factors in gemstone value.
Assembled opals combine natural opal with other materials. A doublet contains a slice of
opal glued to common opal, glass or other material. A triplet contains a slice of opal
glued between a base and a crystal or a glass top. Triplets are usually less expensive ...
Doublet - A gemstone that is made from two layers to make the finished product more affordable. The lower part of the stone is glass or a non precious stone, and the top layer is the more expensive stone. Common with opals but can be found in other gemstones as well.
Doublet: Any stone made of two component parts, frequently genuine stones combined with glass, plastics, or synthetic stones.
Drop: A small ornament suspended from a piece of jewelry. Photo and additional information.
Ear Clip: See "Clip." ...
A gem made from two layers in order to save expenses; the lower part of the composite stone is glass or a non-precious stone, the top is the more valuable stone. One common doublet contains a layer of real garnet and a layer of glass.
dopping wax ...
An imitation gems where one layer of natural stone is glued or cemented with a second layer of synthetic stone or stone of lower quality.
Seen on double refractive gem when viewed, like inclusions, facet edges and scratches.
Doublet - an assembled gemstone with a crown portion of one material bonded to a pavilion portion of another material.
Double refraction - the separation of light passing through a substance into two rays.
This occurs in gems forming in all the crystals system except the cubic or isometric system.
A doublet is a layered gemstone comprising two layers cemented or glued together. Most frequently used to imitate valuable gemstones, the technique is also used with opals to create a stone from a thin vein of precious opal that would otherwise be too fragile to use.
Doublets and triplets
Doublets are stones that have been coated on the back generally to give it the appearance of having a black body color. Triplets are composite stones that have a thin slice of opal sandwiched in between a colorless quartz top and black coated bottom.
Doublet - Two separate pieces of material fused or cemented together to form a single assembled stone
Durability - A gemstone's ability to withstand wear, heat, and chemicals
Dyeing - A treatment that adds color or affects color by deepening it, making it more even, or changing it ...
Doublets...A common method of building up sufficient thickness to permit a gem to be used in a setting. A non gem mineral is cemented to the top or bottom of the gem material. (See Opals.)
Dripstone...stalagmites or stalactites
Druse...A crystal coated surface of rock.
An assembled gem with two main components.
Drive by Citizen Eco-Drive ...
A composite stone consisting of a piece of red synthetic spinel or synthetic corundum cemented alongside a piece of blue synthetic corundum, forming a pseudo-parti-coloured stone.
From: An Illustrated Dictionary of Jewelry, autor: Harold Newman, publishers: Thames and Hudson ...
band worn around the head and usually jeweled and three dimensional Dog collar A wide collar of fabric, gemstones and or pearls worn high and tight on the neck Double clip Type of brooch consisting of two halves joined together on a frame which can be detached and worn singly Doublet A ...
Doublet: A stone composed of two different stones sealed together by a cement. This type of stone is called a composite. It was sometimes done to strengthen a gemstone or to enhance a gem's appearance. Dress Set: A jewelry suite designed for a gentleman's evening attire.
About cabochons, doublets and triplets
In order to best bring out the play of colour in a Fine Opal, the stones are cut and polished to round or oval cabochons, or any other softly domed shape , depending on the raw material. Only the best qualities of Fire Opal, however, are suited to faceting.
1 Abalone high dome doublet gemstone cabochon 20mm diameter
1 Abalone high dome doublet gemstone cabochon 19.8 to 20mm diameter, 6.4 to 7.7mm thick. Natural abalone backing with glass dome.
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Ammolite is usually treated with a colorless, hard material to increase the strength of the stone and is often mounted as a doublet or a triplet (with a quartz top layer and a shale underside). Ammolite is only found in southern Alberta, Canada. AmorphousAmorphous means without form.
Thin seams of opal are often assembled with backing of opal or black onyx to produce a doublet, and a clear quartz top is added to produce a triplet. In addition to making otherwise unusable material useful, the dark backing enhances the play of color, and the quartz top adds to durability.
A doublet contains a slice of opal glued to common opal, glass or other material. A triplet contains a slice of opal glued between a base and a crystal or a glass top. Triplets are usually less expensive than doublets, and both are less expensive than natural opals.
When the final gem is made of two different materials it is called a "doublet," and when made with three, a "triplet." Common doublet or triplet gemstones are emerald and Opal, usually combined with quartz or glass. Compositing is used to improve color and add durability.
Get down and dirty with real miners of opal as we take you on a journey to the outback of Australia. It's the home to not just one of the world's larget opal deposits, but also to some very interesting characters.
Solid Opal refers to stones consisting wholly of Precious Opal, while thin, but beautiful layers are sometimes made into doublets (with a supportive backing), or triplets (having a backing and a crystal dome over the top for protection).
Boulder opal is described as thin layer of valuable opal that is inseparable from its ironstone template, producing a natural doublet. It is cut into forms that pursue its usual fold. It is typically mostly found only in Queensland.
Ruby has also been produced by the flux, hydrothermal, floating zone and Czochralski processes. Doublets consisting of natural sapphire crowns and synthetic ruby pavilions are fairly common, particularly in mining areas. Synthetics are also common at the mines, in both rough and cut forms.
It is also known as korite, calcentine, or Buffalo Stone. Ammolite is usually treated with a colorless, hard material to increase the strength of the stone and is often mounted as a doublet or a triplet. It is only found in southern Alberta, Canada.
At Spencer the precious opal occurs as one or more thin layers within common opal partially filling gas cavities within a rhyolite-obsidian flow. About 10% of the material is thick enough to cut into solid gems; the remainder is fashioned into doublets and triplets.