“P” STONE GLOSSARY

This stone dictionary will give you insight into the world of minerals, generally describing most of our utilized materials.

Stones by first letter: A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

Stones “P” Shown Below


 

Paraiba Quartz – Paraiba quartz is a clear quartz that has been treated with a thin film layer to enhance its color. The bright blue color of this treatment is called Paraiba, as it resembles the bright blue natural Paraiba tourmalines in Brazil.

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Peridot – Peridot is a gem quality olivine and is one of few gems that occurs in only one color (green), though it can vary between a yellow-green to an olive-green. Peridot has a glassy luster and the saturation of color depends on the iron content within the stone.

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Phosphorsiderite – Phosphosiderite is a phosphate iron mineral with a vitreous luster that occurs in red-violet, lavender, orchid or even mossy blue hues.

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Pietersite – Pietersite is a quartz variety of tiger’s eye that displays strong chatoyancy and ranges between golden bronze tones, deep rich blues and even red.

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Pink Topaz – Pink topaz is the rarest naturally occurring topaz, though a colorless topaz can be treated to display a vivid pink hue. When natural, pink topaz is extremely valuable.

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Prasem Crystal – Prasem Crystals are green quartz with Actinolite inclusion. The green coloring of the Actinolite comes from iron inclusions and are considered a Greenschist. These elongated crystals are found in Greece and China.

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Prehnite – Prehnite is a silicate mineral of calcium and aluminum. It ranges between a pale green yellow tone to a grey white tone and often grows as stalactites or botryoidal formations in the veins and cavities of basalt. The majority of gem quality green Prehnite is found in Australia.

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Print Stone – Print Stone, or Newsprint Jasper, is a silicate sandstone of sedimentary rock found in Australia. It displays various tones of browns and reds, creating banded patterns.

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Psilomelane – Also known as Black Hematite, Psilomelane is not actually an iron ore, but rather a manganese oxide mineral. Growing as either a stalactite or botryoidal formation, this stone is predominately black with silver grey submetallic banding.

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Purple Chalcedony – Chalcedony is a silica oxide mineral with a waxy luster that can be found in an array of colors. Purple Chalcedony is a lavender tone which is slightly translucent.

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Purpurite – Purpurite is a manganese phosphate mineral who’s pink to red-violet tones come from iron and manganese inclusions. This brittle stone forms only as masses and has a matte sheen.

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Pyrite – Pyrite, often called Fool’s Gold, is a common iron sulfide mineral with a metallic brass luster often forming in cubes or as thin layers on fossils or other minerals such as Pyritized Ammonites.

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Stones by first letter: A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z