Opal Doublet, Opal Triplet and Mosaic Opal
Compared to solid Opals, which are only cut and polished and may have a natural back such as Potch or iron-clay sandstone, are doublets and triplets put together by human hands.
Opal Doublets are made of a thin layer of high-quality Light Opal, which is glued onto a suitable support layer. For the backing different materials such as obsidian, crystal glass, the Matrix of Boulder Opal or a piece of black Potch can be used. There from precious stones occur with beautiful colors for relatively reasonable prices compared to similar quality solid Black Opals. Also, Opal Doublets enjoy great popularity because they can be produced in larger quantities.
Structure of a doublet
Opal Triplets are a further development of the Opal Doublet. Here the thin precious Opal layer is protected by an additional layer of rock crystal or glass covering the Opal. Opal Triplets are very labor intensive to produce, but economical in the use of the precious Opal rough material. Primarily Light Opal is used, which shows intense colors on the dark backing. Since the fine Opal is well protected under the rock crystal or glass cap, a very thin Opal layer is enough to create a Triplet with vibrant shimmering colors.
Opal Triplets are attractive alternatives to the precious and rare Black Opal. Their play-of-color is impressive and constantly changing depending on the exposure to light. Therefore, they adapt flexible to each color trend of fashion. Generally, they are the least expensive variety of all Australian Opals, but good qualities can reach very high prices as well.
Structure of a triplet
Mosaic Opals are laboriously composed of hundreds of very small and thin best quality Opal slices. They are protected, like the Opal Triplets, by a rock-crystal or crystal glass layer.