Feldspar is an aluminosilicate mineral with potassium, sodium and calcium as the main chemical components. Feldspar has glass luster and pearl luster, transparent to translucent, usually colorless, белый, light brown, green and blue Green is very rare in the feldspar family that can achieve good gem quality. Only feldspars with transparent crystals, bright colors and special optical effects can be used as gems. The main varieties are: Moonstone, Sunstone, Tianhe Stone and labradorite etc.
Sunstone (Sunstone) is a colorless and transparent plagioclase in feldspar minerals. Because its crystals contain small scaly hematite, goethite and other metallic mineral inclusions, it reflects light and appears golden yellow dazzling light , From which it got its name, is also known as the “Sun Stone”. When you rotate this gemstone, you will see red or golden light. This optical effect is called placer gold flash. The better the sand gold flash effect, the higher the value. Sunstone is mainly produced in quartz veins and pegmatites in the past of gneiss. The main producing areas are Russia, the United States, Мексика, Norway, и т. д..
Moonstone is a colorless, transparent to translucent orthoclase. It is a treasure among feldspar gems and was called “Белая нефрита” by ancients. Moonstone has a typical optical effect, due to the interference of its double crystal pattern on the reflection and cleavage of light, and the diffraction effect that makes it form a light cyan milky to pearl-like flash, which is like a hazy moonlight. name. Moonstone processing styles are mostly plain globular stones. After processing, if it contains floating light blue halo, the knife is the most valuable top grade. People in many parts of the world believe that jewelry made for wearing moonstone can bring good luck. The ancients also believed that it could awaken the tender feelings of the sweetheart and give people the power to look forward to the future. The Indians regarded moonstone as a sacred stone, and only wore it on yellow clothes that symbolized sacredness. Gem-grade moonstones are mostly found in caves of gneiss and crystalline schist, and are mainly produced in Sri Lanka, Мьянма, Индия, Австралия, Malagata, Tanzania, the United States and Brazil.
Labradorite is the most important gem species in the plagioclase group of feldspar minerals. It has a unique blue, зеленый, and orange color changing effect. When you rotate this gemstone, you can see a motley rainbow carved like a swimming. Also known as iridescent labradorite. A kind of labradorite produced in Finland has continuous multi-color and bright flashes, which is called spectrum stone. Labradorite is produced in gabbro, plagioclase, diabase, basalt and gabbro pegmatite. The main producing areas are the United States, Канада, Russia and Malagascar. High-quality gem-grade labradorite is mostly produced in the United States.
Amazonite, также известен как “Amazonite”, is a unique bright green or blue-green gemstone that contains rubidium and elements. It is top-grade pure blue or green with good transparency and less cleavage. It can be used Make gem rings and decorations. Tianhe stone is produced in pegmatite, the main producing areas are the United States, Мадагаскар, Россия, Australia and India. It is also produced in Inner Mongolia, Китай.
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