Moonstone is translucent bluish-silver feldspar. Its name was given to the stone for blue or silvery-white overflows, which are generated by a thin-plate structure. Moon stones can be milky white, lilac or as if illuminated by inner golden shimmer.
There are lunar stones with stellate patterns or the effect of "cat's eye," but such gems are very rare.
Moonstone is a kind of potassium feldspar orthoclase, which has nothing to do with the Moon. The composition of the stone KALSi3O8, is alumotriosilicate potassium. It crystallizes in the monoclinic system. The effect of the moonstone can be found in plagioclases (oligoclase-white-morolite and albite), as well as orthoclase (not adularia). The color is usually white, light gray or bluish. Processing in the form of a cabochon reveals flickering color changes in blue tones, reminiscent of moonlight, which gives the stone a special attraction. The crystals are translucent. Glitter is silky, glass. The specific optical effect observed in moonstone, as well as in other types of iridescent feldspars, is called shillerization. It weakly luminesces in X-rays. The mineral forms transparent prismatic or lamellar crystals with a bluish-white, "moon" flicker of the surface. Therefore, the moonstone is sometimes called the "fish's eye". There are also crystals of light yellow color. This mineral is extremely rare. Crystals with high quality come mainly from Sri Lanka.
The hardness of it is 6.0-6.6; the density is 2.6 g / cm3. Low refractive indices: from 1.518-1.528 to 1.533-1.535.
This beautiful jewel has its weakness: it is its relatively small hardness. Moonstones should be very carefully processed. Moonstone’s shine can easily be restored by re-grinding and polishing.
Types of moonstones.
Moonstone has several varieties. Sometimes moonstones are called opaque feldspars. One of them - a labradorite - was opened in the XVIII century by missionaries of the German community of the Labrador Peninsula in Canada. A little later, a large Labradorite deposit was found in Russia - in the vicinity of St. Petersburg in 1781, while building a road from St. Petersburg to the Tsar's palace in Peterhof, boulders with labradorite were found.
Petersburg nobility began to wear rings and rings with these gems. By the way, in Russian Empire the moonstone was called tausin - from the Persian word "tausi" - peacock - for resemblance to the overflow of peacock feathers. Labradorite is distinguished by a beautiful game of colors, and its dark variety, sparkling with blue, is called a black moonstone.
The richest deposits of Labradorite were later discovered in Ukraine. And it turned out to be so much that it depreciated, passed into the category of facing stones and was then used for facing underground stations and many monumental buildings. Very beautiful labradorite are mined in Finland and Madagascar (Madagascar moonstone).
Among the feldspars there is also a solar stone (aventurine feldspar), which has an unusual sparkling-golden tint. It is found in Norway, the USA, Russia (on the Selenga River, which flows into Lake Baikal). Another of the varieties of moonstone is albite: translucent, white, with a bluish tint.
But the real moonstones - adularia and sanidine - are still very rare. Their deposits are found mainly in India, Sri Lanka and Burma. And not long ago, geologists discovered large deposits of sanidine in Mongolia.
Arrest of Two Jewelry Thieves May Crack “Pink Panther” Cases
The group is called the Pink Panthers; no, not the super sleuth actor Peter Sellers from the “Pink Panther” movies. These Pink Panthers are a diverse cartel of jewelry thieves from 16 countries including the United States, the United Arab Emirates, Japan, Montenegro and Serbia.
Artificial patination for giving a decorative appearance to copper products
Also, the patina is divided into 2 types:
Vintage Jewelry Makes A Comeback
This awards season, the stars walked the red carpet in gorgeous gowns and breathtaking jewelry. Before the Academy Awards was even over, everyone was dishing about Angelina Jolie’s jaw-dropping 115-carat Lorraine Schwartz emerald earrings and matching…are you ready for this…
Don’t Be Fooled by Photoshop Jewelry Images
Have you ever looked at a picture of a piece of jewelry online and thought “this is absolutely gorgeous”, ordered it and then wished you had never even visited the site in the first place? It’s happened to all of us. We get deceived into purchasing an item based on an absurdly photoshoped picture that, if you had paid close attention to...
Jewelry Interview with Womensdish.com’s Diane Danielson
Joolwe.com likes to keep members of our community up to date on jewelry designers, industry news and people who look at jewelry as an important part of their everyday lives. We would like to introduce you to Diane Danielson, founder of www.womensdish.com. Her website focuses on women’s issues such as career advice, finances, fashion and...