The Good Germans the Hemmerles, Munich’S First Family of Jewelry, Design Baubles That Are Truly One of a Kind
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Rhodochrosite Gems Unstable Colouration of Padparadscha-Like
Volume 36 / No. 4 / 2018 Effect of Blue Fluorescence on the Colour Appearance of Diamonds Rhodochrosite Gems The Hope Diamond Unstable Colouration of in London Padparadscha-like Sapphires Volume 36 / No. 4 / 2018 Cover photo: Rhodochrosite is prized as both mineral specimens and faceted stones, which are represented here by ‘The Snail’ (5.5 × 8.6 cm, COLUMNS from N’Chwaning, South Africa) and a 40.14 ct square-cut gemstone from the Sweet Home mine, Colorado, USA. For more on rhodochrosite, see What’s New 275 the article on pp. 332–345 of this issue. Specimens courtesy of Bill Larson J-Smart | SciAps Handheld (Pala International/The Collector, Fallbrook, California, USA); photo by LIBS Unit | SYNTHdetect XL | Ben DeCamp. Bursztynisko, The Amber Magazine | CIBJO 2018 Special Reports | De Beers Diamond ARTICLES Insight Report 2018 | Diamonds — Source to Use 2018 The Effect of Blue Fluorescence on the Colour 298 Proceedings | Gem Testing Appearance of Round-Brilliant-Cut Diamonds Laboratory (Jaipur, India) By Marleen Bouman, Ans Anthonis, John Chapman, Newsletter | IMA List of Gem Stefan Smans and Katrien De Corte Materials Updated | Journal of Jewellery Research | ‘The Curse Out of the Blue: The Hope Diamond in London 316 of the Hope Diamond’ Podcast | By Jack M. Ogden New Diamond Museum in Antwerp Rhodochrosite Gems: Properties and Provenance 332 278 By J. C. (Hanco) Zwaan, Regina Mertz-Kraus, Nathan D. Renfro, Shane F. McClure and Brendan M. Laurs Unstable Colouration of Padparadscha-like Sapphires 346 By Michael S. Krzemnicki, Alexander Klumb and Judith Braun 323 333 © DIVA, Antwerp Home of Diamonds Gem Notes 280 W. -
Download Lot Listing
IMPORTANT JEWELRY Wednesday, December 16, 2020 DOYLE.COM Lot 26 IMPORTANT JEWELRY AUCTION Wednesday, December 16, 2020 at 12pm Eastern VIEWINGS BY APPOINTMENT Please contact Laura Chambers to schedule your appointment: [email protected] Safety protocols will be in place with limited capacity. Please maintain social distance during your visit. LOCATION Doyle Auctioneers & Appraisers 175 East 87th Street New York, NY 10128 212-427-2730 DOYLE.COM Sale Info View Lots and Place Bids The journey of the Wilson family from the deep became intimate with “Old New York Society,” summering antebellum South to the pinnacle of New York with their new peers in Newport and traveling to Gilded Age society began with the marriage in 1852 London and Paris. Highlighting the December 16 of the enterprising Georgia-born Richard Thornton auction is an antique natural pearl and diamond tiara Wilson, the son of a tanner and shoemaker, to with provenance of Melissa Clementine Johnston Melissa Clementine Johnston, the daughter of a Wilson (lot 111). She is seen wearing the tiara in a prosperous Tennessee merchant and planter. With an portrait painted by French artist Léon Bonnat initial investment from his new father-in-law, Wilson’s (1833-1922). early business ventures flourished. During the Civil War, Wilson served in important roles in the office of The couple’s five children all made brilliant marriages, the Commissary-General of the Confederacy, traveling to aligning the Wilsons with the some of the most elite London to broker the Southern cotton crop. families of New York and Great Britain and earning Emerging from the war $500,000 richer, he began them the moniker, “The Marrying Wilsons.” buying up defunct railroads. -
Phenomenal Gemstones Possess Striking Optical Effects, Making Them Truly a Sight for Sore Eyes
THE PHENOMENAL PROPERTIES OF GEMS Phenomenal gemstones possess striking optical effects, making them truly a sight for sore eyes. Here is GIA’s guide to understanding what makes each phenomenon so uniquely brilliant. ASTERISM CROSSING BANDS OF REFLECTED LIGHT CREATE A SIX-RAYED STAR-LIKE APPEARANCE. ASTERISM OCCURS IN THE DOME OF A CABOCHON, AND CAN BE SEEN IN GEMS LIKE RUBIES AND SAPPHIRES. ADULARESCENCE THE SAME SCATTERING OF LIGHT THAT MAKES THE SKY BLUE CREATES A MILKY, BLUISH-WHITE GLOW, LIKE MOONLIGHT SHINING THROUGH A VEIL OF CLOUDS. MOONSTONE IS THE ONLY GEM THAT DISPLAYS IT. AVENTURESCENCE FOUND IN NATURAL GEMS LIKE SUNSTONE FELDSPAR AND AVENTURINE QUARTZ, IT DISPLAYS A GLITTERY EFFECT CAUSED BY LIGHT REFLECTING FROM SMALL, FLAT INCLUSIONS. CHATOYANCY OTHERWISE KNOWN AS THE “CAT’S EYE” EFFECT, BANDS OF LIGHT ARE CAUSED BY THE REFLECTION OF LIGHT FROM MANY PARALLEL, NEEDLE-LIKE INCLUSIONS INSIDE A CABOCHON. NOTABLE GEMS THAT DISPLAY CHATOYANCY INCLUDE CAT’S EYE TOURMALINE AND CAT’S EYE CHRYSOBERYL. IRIDESCENCE ALSO SEEN IN SOAP BUBBLES AND OIL SLICKS, IT’S A RAINBOW EFFECT THAT IS CREATED WHEN LIGHT IS BROKEN UP INTO DIFFERENT COLORS. LOOK FOR IT IN FIRE AGATE AND OPAL AMMONITE (KNOWN BY THE TRADE AS AMMOLITE). LABR ADORESCENCE A BROAD FLASH OF COLOR THAT APPEARS IN LABRADORITE FELDSPAR, IT’S CAUSED BY LIGHT INTERACTING WITH THIN LAYERS IN THE STONE, AND DISAPPEARS WHEN THE GEM IS MOVED. INSIDER’S TIP: THE MOST COMMON PHENOMENAL COLOR IN LABRADORITE IS BLUE. PLAY OF COLOR THE FLASHING RAINBOW-LIKE COLORS IN OPAL THAT FLASH AT YOU AS YOU TURN THE STONE OR MOVE AROUND IT. -
CHARON KRANSEN ARTS 817 WEST END AVENUE NEW YORK NY 10025 USA PHONE: 212 627 5073 FAX: 212 663 9026 EMAIL: [email protected]
CHARON KRANSEN ARTS 817 WEST END AVENUE NEW YORK NY 10025 USA PHONE: 212 627 5073 FAX: 212 663 9026 EMAIL: [email protected] www.charonkransenarts.com AUGUST. 2020 A JEWELER’S GUIDE TO APPRENTICESHIPS: HOW TO CREATE EFFECTIVE PROGRAMS suitable for shop owners, students as well as instructors, the 208 page volume provides detailed, proven approaches for finding , training and retaining valuable employees. it features insights into all aspects of setting up an apprenticeship program, from preparing a shop and choosing the best candidates to training the apprentice in a variety of common shop procedures. an mjsa publication. $ 29.50 ABSOLUTE BEAUTY – 2007catalog of the silver competition in legnica poland, with international participants. the gallery has specialized for 30 years in promoting contemporary jewelry. 118 pages. full color. in english. $ 30.00 ADDENDA 2 1999- catalog of the international art symposium in norway in 1999 in which invited international jewelers worked with jewelry as an art object related to the body. in english. 58 pages. full color. $ 20.00 ADORN – NEW JEWELLERY - this showcase of new jewelry offers a global view of exciting work from nearly 200 cutting-edge jewelry designers. it highlights the diverse forms that contemporary jewelry takes, from simple rings to elaborate body jewelry that blurs the boundaries between art and adornment. 460 color illustrations. 272 pages. in english. $ 35.00 ADORNED – TRADITIONAL JEWELRY AND BODY DECORATION FROM AUSTRALIA AND THE PACIFIC adorned draws on the internationally recognised ethnographic collection of the macleay museum at the university of sidney and the collections of individual members of the oceanic art society of australia. -
To Read the Newsletter Sample
American Society of Jhistoriansewelry newsletter vol. 31, no. 1, spring/summer 2017 A Letter from the President Dear ASJH Member: COVER: Necklace, 1929. Pro- The jewelry world is populated with fascinating, compelling, and unforget- duced by Van Cleef & Arpels (Paris, France). Platinum, carved table individuals, many of whom have been industry mentors and leaders. It is rubies, diamonds; l. 41.3 cm. The with great sadness that we inform you of several deaths that have taken place Adrien Labi Collection. Photo: Siegelson, New York. recently: those of Liana Paredes, Kenneth Jay Lane, Daphne Farago, and Fred Leighton. OPPOSITE: “Giraffe” Necklaces and Bracelets, ca. 1927. Designed Ms. Paredes was the chief curator and director of collections at Hillwood by Jean Dunand (French, b. Estate, Museum, and Gardens, the famed museum in Maryland founded by Switzerland, 1877–1942). Red and black lacquer, Oréum; necklaces: Marjorie Merriweather Post. She was a highly esteemed expert on French diam. 11.4–14.6 cm; bracelets: decorative arts and interiors and was both author and co author of numerous diam. 6–7 cm. Siegelson, New York. works on porcelain and collectibles, including Sevres Then And Now: Tradition in Porcelain 1750–2000 and A Taste for Splendor: Russian Imperial and European Treasures from the Hillwood Museum. After organizing and curating numerous decorative arts exhibits, she moved onto what was to become one of her favorite endeavors: researching and curating the magnificent exhibit of Marjorie Merriweather Post’s jewels, Spectacular Gems and Jewelry, on view at Hillwood until January of 2018. She was a historian and a lover of beautiful objects, with a deep under- standing of aesthetics and workmanship. -
Spinel and Its Treatments: a Current Status Report
GEMOLOGY Spinel and its Treatments: A Current Status Report By Christopher P. Smith, American Gemological Laboratories Introduction and they are only rarely encountered Clarity Enhancement by the major labs around the world. Spinel has historically been one of However, the author has noticed a The practice of filling fissures to reduce the most highly revered gemstones. general increase in the attempts to their visibility and improve the apparent However, over an extended period improve spinel quality and color, clarity of a gemstone is probably of time, its popularity had suffered utilizing a variety of treatment the single most prevalent treatment as a result of many factors, including practices. applied to gemstones. Oils and other its classification as “semi-precious” and a general confusion with another dominant red gemstone: ruby. More recently though, spinel has been making a strong comeback and so its popularity is once again on the rise. Articles of important new sources and even a book devoted to this beautiful and colorfully diverse gemstone have helped to focus attention back onto spinel (see e.g. Smith et.al., 2007; Senoble, 2008; Pardieu et.al., 2009; Krzemnicki, 2010; Yavorskyy and Hughes, 2010). In addition to exhibiting a vibrant array of shades and nuances of color, spinel has also traditionally been spared the controversy of treatments that have encumbered many other gem varieties, such as ruby, sapphire, emerald, quartz, topaz and tanzanite among others. Fortunately, spinel remains a gemstone that is generally free of treatment considerations. However, today some treatments are starting to be encountered (Robertson, 2012). This article is a review of those treatments and the gemological characteristics that help to distinguish them. -
MAGAZINE • LEAWOOD, KS SPECIAL EDITION 2016 ISSUE 3 Fine Jewelers Magazine
A TUFTS COMMUNICATIONS fine jewelry PUBLICATION MAZZARESE MAGAZINE • LEAWOOD, KS SPECIAL EDITION 2016 ISSUE 3 fine jewelers magazine Chopard: Racing Special The New Ferrari 488 GTB The Natural Flair of John Hardy Black Beauties Omega’s New 007 SPECIAL EDITION 2016 • ISSUE 3 MAZZARESE FINE JEWELERS MAGAZINE • SPECIAL EDITION 2016 welcome It is our belief that we have an indelible link with the past and a responsibility to the future. In representing the fourth generation of master jewelers and craftsmen, and even as the keepers of a second generation family business, we believe that the responsibility to continually evolve and develop lies with us. We endeavor to always stay ahead of the latest jewelry and watch trends and innovations. We stay true to our high standards and objectives set forth by those that came before us by delivering a jewelry experience like no other; through the utmost attention to service, knowledge and value. Every great story begins with a spark of inspiration. We are reminded day after day of our spark of inspiration: you, our esteemed customer. Your stories help drive our passion to pursue the finest quality pieces. It is a privilege that we are trusted to provide the perfect gift; one that stands the test of time and is passed along through generations. We find great joy in assisting the eager couple searching for the perfect engagement ring, as they embark on a lifetime of love, helping to select a quality timepiece, or sourcing a rare jewel to mark and celebrate a milestone. We are dedicated to creating an experience that nurtures relationships and allows those who visit our store to enter as customers, but leave as members of our family. -
JEWELS of the EDWARDIANS by Elise B
JEWELS OF THE EDWARDIANS By Elise B. Misiorowski and Nancy K. Hays Although the reign of King Edward VII of ver the last decade, interest in antique and period jew- Great Britain was relatively short (1902- elry has grown dramatically. Not only have auction 1910), the age that bears his name produced 0 houses seen a tremendous surge in both volume of goods distinctive jewelry and ushered in several sold and prices paid, but antique dealers and jewelry retail- new designs and manufacturing techniques. ers alikereportthat sales inthis area of the industry are During this period, women from the upper- excellent and should continue to be strong (Harlaess et al., most echelons of society wore a profusion of 1992). As a result, it has become even more important for extravagant jewelry as a way of demon- strating their wealth and rank. The almost- jewelers and independent appraisers to understand-and exclusive use of platinum, the greater use of know how to differentiate between-the many styles of pearls, and the sleady supply of South period jewelry on the market. African diamonds created a combination Although a number of excellent books have been writ- that will forever characterize Edwardian ten recently on various aspects of period jewelry, there are jewels. The Edwardian age, truly the last so many that the search for information is daunting. The era of the ruling classes, ended dramatically purpose of this article is to provide an overview of one type with the onset of World War I. of period jewelry, that of the Edwardian era, an age of pros- perity for the power elite at the turn of the 19th century. -
The Journal of Gemmology Editor: Dr R.R
he Journa TGemmolog Volume 25 No. 8 October 1997 The Gemmological Association and Gem Testing Laboratory of Great Britain Gemmological Association and Gem Testing Laboratory of Great Britain 27 Greville Street, London Eel N SSU Tel: 0171 404 1134 Fax: 0171 404 8843 e-mail: [email protected] Website: www.gagtl.ac.uklgagtl President: Professor R.A. Howie Vice-Presidents: LM. Bruton, Af'. ram, D.C. Kent, R.K. Mitchell Honorary Fellows: R.A. Howie, R.T. Liddicoat Inr, K. Nassau Honorary Life Members: D.). Callaghan, LA. lobbins, H. Tillander Council of Management: C.R. Cavey, T.]. Davidson, N.W. Decks, R.R. Harding, I. Thomson, V.P. Watson Members' Council: Aj. Allnutt, P. Dwyer-Hickey, R. fuller, l. Greatwood. B. jackson, J. Kessler, j. Monnickendam, L. Music, l.B. Nelson, P.G. Read, R. Shepherd, C.H. VVinter Branch Chairmen: Midlands - C.M. Green, North West - I. Knight, Scottish - B. jackson Examiners: A.j. Allnutt, M.Sc., Ph.D., leA, S.M. Anderson, B.Se. (Hons), I-CA, L. Bartlett, 13.Se, .'vI.phil., I-G/\' DCi\, E.M. Bruton, FGA, DC/\, c.~. Cavey, FGA, S. Coelho, B.Se, I-G,\' DGt\, Prof. A.T. Collins, B.Sc, Ph.D, A.G. Good, FGA, f1GA, Cj.E. Halt B.Sc. (Hons), FGr\, G.M. Howe, FG,'\, oo-, G.H. jones, B.Se, PhD., FCA, M. Newton, B.Se, D.PhiL, H.L. Plumb, B.Sc., ICA, DCA, R.D. Ross, B.5e, I-GA, DGA, P..A.. Sadler, 13.5c., IGA, DCA, E. Stern, I'GA, DC/\, Prof. I. -
Mineral Collecting Sites in North Carolina by W
.'.' .., Mineral Collecting Sites in North Carolina By W. F. Wilson and B. J. McKenzie RUTILE GUMMITE IN GARNET RUBY CORUNDUM GOLD TORBERNITE GARNET IN MICA ANATASE RUTILE AJTUNITE AND TORBERNITE THULITE AND PYRITE MONAZITE EMERALD CUPRITE SMOKY QUARTZ ZIRCON TORBERNITE ~/ UBRAR'l USE ONLV ,~O NOT REMOVE. fROM LIBRARY N. C. GEOLOGICAL SUHVEY Information Circular 24 Mineral Collecting Sites in North Carolina By W. F. Wilson and B. J. McKenzie Raleigh 1978 Second Printing 1980. Additional copies of this publication may be obtained from: North CarOlina Department of Natural Resources and Community Development Geological Survey Section P. O. Box 27687 ~ Raleigh. N. C. 27611 1823 --~- GEOLOGICAL SURVEY SECTION The Geological Survey Section shall, by law"...make such exami nation, survey, and mapping of the geology, mineralogy, and topo graphy of the state, including their industrial and economic utilization as it may consider necessary." In carrying out its duties under this law, the section promotes the wise conservation and use of mineral resources by industry, commerce, agriculture, and other governmental agencies for the general welfare of the citizens of North Carolina. The Section conducts a number of basic and applied research projects in environmental resource planning, mineral resource explora tion, mineral statistics, and systematic geologic mapping. Services constitute a major portion ofthe Sections's activities and include identi fying rock and mineral samples submitted by the citizens of the state and providing consulting services and specially prepared reports to other agencies that require geological information. The Geological Survey Section publishes results of research in a series of Bulletins, Economic Papers, Information Circulars, Educa tional Series, Geologic Maps, and Special Publications. -
Aerin Lauder
FEBRUARY 2020 AMERICA’S LEAST BORING BILLIONAIRES The STRANGE CASE of the VA NISHING PRINCESSES T&C’s FANCY SAFARI Guide HOW NOT TO RAISE A BRAT WELR JE Y TheThe RightRight WayWay toto SpendSpend YourYour Bonus!Bonus! A S W A R D Aine Jewelsrin that L Madeau Historyder JEWELRY AND THE MOB RIHANNA AND THE RENAISSANCE A DIAMOND TROUSSEAU THE T&C Jewelry AWA R D S The new masters and reigning champions who marked the year in jewels. The Major FROM TOP ANAKHOURI DIAMOND Breakthrough AND EMERALD EVA NECKLACE $461,000 ANA KHOURI HIGH JEWELRY DIAMOND AND PARAIBA TOURMALINE PHILLIPA NECKLACE $824,000, ANAKHOURI.COM It was the diamond and Paraiba tourmaline torque du jour of Paris Couture! The Brazilian designer Ana Khouri had already established herself as a skilled sculptor of metal and stones with ear cus and a Mirian semicircle ring that have become modern classics, but the Harmony High Jewelry Collection of diamonds and rare stones she showed this year at the Musée des Arts Décoratifs signaled the evolution of a rising talent into a celebrated DON PENNY, STYLED BY MIAKO KATOH MIAKO BY STYLED DON PENNY, member of the establishment. The ultimate getting-ready selfie: a white bathrobe and a 128-carat The Red Carpet diamond. Appearance LADY GAGA IN THE TIFFANY DIAMOND Was it the most expensive jewel ever worn to the Academy Awards? Worth a reported $30 million, it’s likely that Lady Gaga’s Tif- fany diamond necklace claims that title. (The previous record was held by Titanic actress Gloria Stuart’s $20 million Harry Winston blue diamond, inspired by the movie’s Heart of the Ocean.) But that was actually not why this particular diamond necklace sent jewelry experts into a frenzy on Oscar night. -
Gemmology Bulletin Summer 2020 the First Identification of Spinel
Summer 2020 Gemmology Bulletin Published: 17 May (revised 30 June) www.LustreGemmology.com/research By Lustre Gemmology ® All rights reserved The First Identification of Spinel By James Evans, FGA The credit for the first identif ication of ‘Spinel’ is commonly given to Jean-Baptiste Louis de Romé de L'Isle. Within his 1783 work Crystallography, De Romé de L'Isle identified ‘Spinel Ruby’ through its octahedral and macle forms. But is this credit warranted? After all, The octahedral and macle today’s gemmologists would be ill- forms of ‘Spinel Ruby’.1 advised to rely on crystal form alone. Historically, all red gemstones were considered varieties of ‘Ruby’. Nevertheless, the ‘True Ruby’ (also known as ‘Oriental Ruby’) was commonly separated from other varieties by its hardness.2 As such, Anselme Boece de Boot gave a practical account of the identification of ‘True Ruby’ in 1644: The RUBY is a transparent gem of a reddish colour, with a small portion of blue, and cannot be touched by a file. The redness is not like that of vermillion3 but of blood, or rather of cochineal4, or kermess5; but the less blue it has in it the better it is […]. In Pegu [Myanmar] they are found in a river of that name and the inhabitants try their goodness with their teeth and tongue, for they judge those that are coldest and hardest are the best. (De Boot, 1644. As summarised by Brookes, 1763, pp.133-134) De Boot thus described ‘True Ruby’ as: a transparent gem of purple-red colour; extremely hard; and a good conductor of heat… all useful information in examining a water-worn stone.