Visual guide to the Five Main Types of Opal

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For example, boulder opal, hyalite, and fire opal are all unique forms of this mineral. When light hits an opal, it travels through tiny silica spheres inside the stone, creating a rainbow of flashing colors, known as "play-of-color.". The colors can include blues, greens, reds, and oranges, making each opal unique.

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Crystal Opal. $50 - $2,000. Transparency, brightness of play-of-color, pattern, size, lack of inclusions. The table provides a comprehensive pricing guide for different types of opals in 2023, denoting the price per carat in USD and key factors that affect the price.

19 Different Types of Opals Nayturr

It is important to know the different types of opal in order to determine the value, quality and the price. There are three distinct types of opals we will learn about: natural opals, composite or enhanced opals and man-made or synthetic opals. The four natural types of opal found are Black opal, Boulder opal, Crystal opal and White opal.

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As with any precious gem, the value of Australian Opal will vary, based on several factors. Similar to Diamonds, Opals are valued on carat weight, colour, clarity, and brightness, with the addition of rarity (opal type), and pattern. This blog will reveal 9 ways to know how much an Australian opal is worth.

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Color is the first thing that you will notice about an opal. Red is the rarest and most sought out color. In order of value, the most valuable color is red, then orange, green, blue and purple. However, Opal is usually never a single color. It is important to decide what the dominant color is followed by any secondary colors.

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Opal is an amorphous form of silica, chemically similar to quartz, but containing 3% to 21% water within its mineral structure. Gem grade opals usually have 6% to 10% water content. Opal is a sedimentary stone. Under the proper conditions, water percolates through the earth, becoming rich in dissolved silicates.

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Central & South American Opal. Mexican Opal: Mostly known for fire opals, but Mexico also produces madera opals, contra luz opals, cantera boulder opals, and some of the world's best water opals. Brazilian Opal: Known for crystal opal with pastel color flashes and low moisture content.

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What is an Opal Type? Opal types are primarily based on the gem's body color. This is the color that shows under a precious opal's play of color, the flashing or moving colors across its surface.However, sometimes the form, matrix, or inclusions define the type. (Opals that show play of color are called "precious opals," while those that don't are called "common opals").

19 Different Types of Opals Nayturr

Crystal Opal - Crystal opal is any of the above kind of opal which has a transparent or semi-transparent body tone - i.e. you can see through the stone. Crystal opal can have a dark or light body tone, leading to the terms "black crystal opal" and "white crystal opal". Learn more about crystal opals. 'Fire Opal' - Many people.

Opals of the World Pattern Variety Chart. 62 different opals pictured! MineralPorn

The value of an opal depends on many factors. The type of opal, body tone, brilliance, pattern, colour bar thickness, the play of colour, and faults all play important roles in determining the value. Other important factors include the quality of the cut & polish, and the size of the stone. When being valued, opal is carefully examined and.

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Natural Solid Opal. Opals that has not been changed from its natural state -- except to be cut and polished into a gem stone. The best know types are Queensland Boulder Opal, Black Opal, Crystal Opal, White Opal. Opal can also be found in Mexico and Ethiopia. Natural Solid Opals are the most sort after types of Opals.

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Natural Opal Type 3 Is Opal presented in one piece where the Opal is intimately diffused as infillings of pores or holes or between grains of the host rock in which it was formed. This Opal is commonly known as matrix Opal. Watch. Boulder Opal N1 to N9 opaque/translucent. Natural Black Opal Type 1 The most valuable and popular of all Opals is.

Types of Opals

Rarity and Value. Quality crystal opals often result in a high value. This is because the overall clarity of the colours is a direct result of the shape, size, and type of stone, and is therefore unable to be replicated in other pieces, therefore giving the crystal opal a higher value than a 'standard' opaque opal.

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2. Welo Opal. credit: James St. John. Welo opal is a bit of a newcomer to the scene and is the main variety of opal that comes out of Ethiopia. It's generally a hydrophane opal, often with high transparency and occasionally with a slight orange tint to the body color. Fewer are white or darker in color.

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There are various types of opal clarity characteristics that affect value. Opals, like other gems, can have fractures, or pits and other surface blemishes. An opal might also contain fragments of its host rock, called matrix. Matrix in a polished opal is usually—but not always—detrimental to its appearance and value. It depends on the type.

A Comprehensive Guide to Different Types of Opals

While black opals have a darker base, there are also black opals that may feature different hues on both sides. Such types of black opals are called as "reversible" opals. 2. Australian Fire Opal. Many mistake fire opal with precious opal but they are poles apart.