Triplet
A triplet is a kind of composite stone that contains out of three parts. A good example is the opal triplet which often is an ironstone backing dressed with a slice of precious opal which on it's turn is covered by a crystal cabochon.
Triplet Opal
Triplet Opals are similar and consist of a thin slice of natural opal bonded to a black backing together with a glass or crystal dome on top which protects the opal.
10x Triplet Jeweler's Loupe
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A Jeweler's Loupe is a 10x magnification tool used by Jeweler's and customers to see Inclusions, Flaws and Imperfections in a Diamond or Gemstone.
Triplet
A triplet is a fabricated stone composed of three layers that are glued or epoxied together. An opal triplet is made by putting a thin layer of opal between a crystal clear layer of quartz and a layer of onyx or ironstone.
Triplet
Triplet is a stone comprised on three adhered layers of stone, it is manmade.
Triplet Loupes: The highest quality (and most expensive) loupes actually consist of a set of three glass lenses fitted together, and are referred to as "triplets".
Triplet
A man-made stone of three parts that includes a clear protective top layer fused together with a thinly sliced gem, a dark backing material and a clear or colored adhesive.
TRIPLET
A triplet is a manufactured stone that is made by sandwiching three thin layers of stones together.
Triplet: A man-made creation of three parts that normally includes a clear protective top layer fused together with a thinly sliced gem and a clear or colored adhesive.
Triplet: A composite stone of three separate layers, like an opal triplet where the top layer is quartz, middle layer a thin section of opal and base that is usually black or white chalcedony, all cemented together.
Triplet - This is a process whereby a stone is made by sandwiching three thin layers of stones together.
Triplet - 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.
triplet A magnifying instrument for the viewing of small objects, especially gemstones. The three lenses are designed to correct for spherical and chromatic aberrations (distortions).
TTLB See top top light brown.
OPAL TRIPLET
An opal triplet is a manufactured stone that is composed of three thin layers that are glued together. A thin layer of opal is sandwiched between a layer of clear quartz and a layer of either obsidian or ironstone.
Triplet
Opals are frequently created as triplets, meaning the stone is assembled from three pieces. Opal triplets are composed of a rock quartz layer over genuine opal joined to a base.
Triplets and doublets too may be exposed by dipping them sidewise into oil, thus removing the prismatic refraction almost completely, as the oil has about the same refractive index as the stone.
Triplet is also a common. It is an opal that is covered with a coating. The coating can be either plastic, or a slice of quartz. Since opal is generally a oft stone it is open to bruises.
Triplet
Same but with a protective, clear cover (often quartz or synthetic spinel) over the opal layer.
Faceted ...
TRIPLET A gemstone made of three pieces. A common example is an Opal triplet which is made by placing a very thin layer of Opal between an Onyx or dark material background which provides rigidity and enhances the thin materials color and a covering ...
Triplet
An assembled stone of three parts held together by a colorless cement
Turquoise ...
TRIPLET - A technique of combining various or similar gemstones in three layers to create an imitation gemstone.
Opal triplets are made in a similar manner,
with opal bonded to a potch base.
However, the opal can be a very thin slice,
because it is covered with a cap,
to produce an opal "sandwich".
The cap is usually clear crystal quartz.
Emerald triplet: An assembled stone. Two parts, the top and the bottom are either quartz, pale beryl or synthetic spinel and the third part usually is a layer of green cement, serving a colorant while gluing the top to the bottom.
Hastings Triplet Magnifiers have a unique three-element design which provides distortion-free and color-correct viewing. The design reduces or eliminates "pin cushion" distortion and chromatic and/or spherical aberations.
An "opal-triplet" is made up of three sections, a (top) polished quartz cabochon to protect the opal layer, a center opal slice , and a bottom piece of "potch" or dark material to provide strong contrast for the center slice of opal, ...
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.
Large star-shaped triplet crystals often measure as much as 9 centimeters across, and sometimes even more; one group was found with 22 large crystals and many small ones of the same kind [possibly referring to the Fersman Museum specimen].
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.
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.
Ammolite is sold in its natural form, as a doublet or as a triplet. A triplet is made of a dark gray layer of shale on the bottom and a cap of clear optical quartz or synthetic spinel on top.
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.
Triplets are almost the same as doublets, except that instead of just cement there's a third stone layer.
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.
defines it as a triplet 10 x magnifying lens of high quality, corrected for chromatic and spheric aberration and with a field of visibility large enough to see an entire stone of 4 to 5 ct.
Colorless Beryl-joined by green bonding (Triplets)
ASBL
Mabe "Pearls" color coated, dyed, bleached, filled with hardened substances and a Mother of Pearl back. Sometimes coating can be plastic or polymer to protect the thin nacre.
Appearance
Opal doublets and triplets are thin slices of opal which are bonded to a matrix and sometimes covered with a quartz top (triplets).
Known as doublets or triplets, these gemstones consist of two or more parts that have been artificially joined together to give the impression of a single gemstone.
Composite opals (doublets and triplets) should never be immersed in water, as it can get between the layers and damage the glue or spoil the appearance of the stone.
Assembled stones - Composites of colored stones and glass or a cheaper grade of similar color stone. Called doublets or triplets, with full disclosure, this is a good way to have the beauty of a ruby, emerald or tanzanite at a fraction of the price.
Composite stones
Stones which are clued together from 2 or more layers to enhance the color and quality of the stone (duplet, triplets) .
Conchoidal
A type of fracture happen on amorphous substances, like shipped glass, shell ect.
This page from the Mineral Gallery site gives basic information on minerals that naturally form pairs (or triplets), with links to each one.
Virtual Museum of Minerals and Molecules ...
The diamond engagement ring came first. The wedding ring followed. Now is the time for the most perfect triplet to these sentimental favorites: the diamond anniversary band.
This method is not recommended for opals (especially doublets and triplets).
5. CUTTING HINTS: ...
O2 itself has two energetic forms: the low-energy, predominant single-bonded diradical triplet oxygen, and the high-energy double-bonded molecule singlet oxygen. This native diradical quality of oxygen contributes to its destructive chemical nature.
Epoxy is a synthetic resin that has strong adhesive properties. It is used as a bonding agent in assembled gemstones, such as doublets and triplets.
etch/etching ...
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.
and lower parts of natural gemstone have colored glue between them: or the upper part is gemstone and the lower part is colored glass. Where the doublet has a thin top layer of harder stone for the protection of the surface, it becomes a triplet.
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.
triplet Gem composed of three cross-sections pasted together. The top portion, which is the portion that is visible, consists of a naturally occurring, valuable gem, while the bottom two portions are low-grade material, ...
 See also: Stone, Color, Jewel, Gemstone, Cut
  
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