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Peach Aventurine Size 1 - 1 1/4" Peach Aventurine Metaphysical Properties and Meanings Peach Aventurine Metaphysical Meanings and Healing Properties Peach Aventurine Stone of prosperity Increases success, luck, gambling, career, and love Helps defuse negative situations Reinforces leadership qualities and decisiveness Brings together the intellectual and emotional bodies Healing reproductive system, intestinal issues, ovaries, groin. Chemical SiO2 Structure Trigonal Hardness 7 Vibrates to #3 Feldspar Peach Aventurine- The most common colour of aventurine is green, but it may also be orange, brown, yellow, blue, or gray. Chrome-bearing fuchsite (a variety of muscovite mica) is the classic inclusion, and gives a silvery green or blue sheen. Oranges and browns are attributed to hematite or goethite. Quartz is the second most abundant mineral in the Earth‘s continental crust, after feldspar. Its crystal structure is a continuous framework of SiO4 silicon–oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall chemical formula of SiO2.wiki Pure quartz, traditionally called rock crystal or clear quartz, is colorless and transparent or translucent, and has often been used for hardstone carvings, such as the Lothair Crystal. Common colored varieties include citrine, rose quartz, amethyst, smoky quartz, milky quartz, and others. The most important distinction between types of quartz is that of macrocrystalline (individual crystals visible to the unaided eye) and the microcrystalline or cryptocrystalline varieties (aggregates of crystals visible only under high magnification). The cryptocrystalline varieties are either translucent or mostly opaque, while the transparent varieties tend to be macrocrystalline. Chalcedony is a cryptocrystalline form of silica consisting of fine intergrowths of both quartz, and its monoclinic polymorph moganite.[9] Other opaque gemstone varieties of quartz, or mixed rocks including quartz, often including contrasting bands or patterns of color, are agate, carnelian or sard, onyx, carnelian, heliotrope, and jasper. wiki .

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Spring 1982 Gems & Gemology
SPRING 1982 Volume 18 Number 1 TABLE OF CONTENTS EDITORIAL 1 The Gems & Gemology Most Valuable Article Award Richard T. Lid~licoat,Ir. FEATURE 3 The Jade Enigma ARTICLES \ill M. Hobbs 20 Jade Forms from Ancient China Evelyn Tucker 32 Some Observations on the Treatment of Lavender Jadeite Iohn I. Koivula NOTES 36 Cultured 314 Blister Pearls AND NEW Robert Crowningshield TECHNIQUES 39 The Natural Formation and Occurrence of Green Quartz Xhomas R. Paradise REGULAR 43 Editorial Forum FEATURES 44 Gem Trade Lab Notes 50 Gemological Abstracts 58 Gem News ABOUT THE COVER: The jadeite necklace and earrings illustrated here give some indication of the beauty and mystery of this material. The identification of jade and some of its simulants is comprehensively examined in the article by ]ill Hobbs. The motifs that the Chinese have used for centuries to carve jade-for example, these earrings have been formed in the shape of a pi, a symbol of heaven-are reviewed in the article by Evelyn Tucker. The natural green jadeite beads are 30 inches (75 cm) long; the largest bead is 9.5 mm in diameter. The natural green jadeite earrings are 25 mm in diameter. Courtesy of the Crystalite Corporation. Photograph s?Y81 Harold and Erica Van Pelt-Photographers, Los Angeles, CA. Composition for Gems & Gemology is by Printed Page Graphics, Fullerton, CA. The color separations are by Effective Graphics, Compton, CA. Printing is by Waverly Press, Easton, MD. "1982 Gemological Institute of America. All rights reserved. ISSN 001 6-626X EDITORIAL Editor-in-Chief Managing Editor Editor, Gem Trade Lab Notes STAFF Richard T.
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Z Thornton Sep 14.Qxp
Fig 2. A late 19thC Scottish dirk brooch, with three Fig 5. A lava cameo bracelet, designed as a series tiered hardstone and smokey quartz panels, to the of oval-shape vari-shade cameos depicting various faceted smokey quartz terminal, with engraved profiles of gentlemen in period dress, some with detail. £200. laurel details. £190. Victorian Vintage Jewellery Fig 3. A selection of Scottish jewellery, to include a hardstone rectangular panel bracelet and twelve brooches, four brooches of thistle design, ten with and Accesories at Fellows marks to indicate silver. £180. By Zita Thornton Victorian jewellery was very well represented who were clamouring for cameos. Shell was at Fellows in May. The choice included Scottish softer and easier to carve and cameos could be agate pieces, cameos, lockets, momento and produced more quickly and cheaply. In the mid sentimental items. There was also a selection of nineteenth century a shell cameo was likely to decorative jewellery in gold or silver, set with cost around £1-£8 compared to a hardstone gems or carved from ivory, jet, jade and coral. cameo at £5-£40. Victorian cameo jewellery was Agate and other hardstone jewellery was a most often set into gold mounts with closed or favourite of the Victorians and was made in open backs. The more elaborate the setting, the Scotland using locally found stones. Bands of more expensive the cameo, then as now. Values coloured agate, carnelian or bloodstone would for a shell cameo in the Fellows sale reached be set, usually in silver, in traditional shapes £500, Fig 4, for a cameo brooch mounted in an such as an anchor or shield, or might encircle a elaborate 18ct gold surround with blue enamel cut stone such as smokey quartz.
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Antique Italian Pietra Dura Brass & Alabaster Comport Dish
anticSwiss 26/09/2021 14:08:10 http://www.anticswiss.com Antique Italian Pietra Dura Brass & Alabaster Comport Dish FOR SALE ANTIQUE DEALER Period: 19° secolo - 1800 Regent Antiques London Style: Altri stili +44 2088099605 447836294074 Height:8cm Width:29cm Depth:29cm Price:700€ DETAILED DESCRIPTION: This is a superb quality antique Italian Pietra Dura mounted, gilt brass and alabaster table-centre comport dish, dating from the late 19th Century. With striking pierced Neo-Gothic chased brass mounts this splendid alabaster dish is set with six highly decorative pietra dura roundels depicting various floral decoration. It is raised on a sturdy circular brass base. It is a sumptuous piece which will make a great statement in any special room. Condition: In really excellent condition, please see photos for confirmation. Dimensions in cm: Height 8 x Width 29 x Depth 29 Dimensions in inches: Height 3.1 x Width 11.4 x Depth 11.4 Pietra dura is a term for the inlay technique of using cut and fitted, highly polished coloured stones to create images. It is considered a decorative art. Pietre dure is an Italian plural meaning "hard rocks" or hardstones; the singular pietra dura is also encountered in Italian. In Italian, but not in English, the term embraces all gem engraving and hardstone carving, which is the artistic carving of three-dimensional objects in semi-precious stone, normally from a single piece, for example in Chinese jade. The traditional convention in English has been to use the singular pietra dura just to denote multi-colored inlay work. However, in recent years there has been a trend to use pietre dure as a term for the same thing, but not for all of the techniques it covers, in Italian.
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Jewellery Series Part I. Cameos
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F^ the Journal of \ Y Volume 26 No
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MICRONISING MINERALS THAT SUITS YOUR PRODUCT Inspiring Quality & Performance for Satisfying Our Customer Needs Is the #1 and Only Aim of Our Management Team
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Volume 24 / No. 5 / 1995
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