Journal of Gemmology

Article	Citations
Assure Program Developments	9
Synthetic Moissanite with the Reflectivity of Diamond	8
Black Synthetic Moissanite Coloured by a Pleochroic Mechanism	4
A New Occurrence of Rhodonite Associated with Nephrite Jade in Washington State, USA	4
Santa Fe Symposium Proceedings 2022	3
An Exceptional Carved ‘Enhydro’ Chalcedony	3
Rapaport Podcasts	2
Fluorcarletonite—A New Blue Gem Material	2
A Purple Sapphire Containing Interesting Inclusions: Formation Insights	2
‘Star of David’ Pattern Produced by a Trapiche Emerald from Colombia	2
Eighteenth Annual Sinkankas Symposium—Alexandrite and Other Color-Change Gemstones	2
Goldschmidt2025 Abstracts: ‘Diamond: Chronicles of the Mantle’	2
Stabilised Aquamarine Cabochon with Unusual Colouring	1
Large Aquamarine Overgrown by Synthetic Emerald	1
ASDI-500 Automated Diamond Spectral Inspection System	1
Advanced Instrumentation for Identifying Sugar-Acid-Treated Opal	1
Gempedia: A Comprehensive Glossary for Gemstones and Gemmology	1
Three Repaired and Filled Hollow Pearls	1
Diamonds: Natural, Treated and Laboratory-Grown	1
Gem-quality Variscite from Central Iran	1
Sustainability Rated Diamonds’ Full Standard	1
Gems, Colours & Wild Stories: 175 Years of Constantin Wild	1
Gemstone Supplier Conversations Guide	1
Webinars and Other Online Gemmological Education	1
Erratum	1

Gem-A Notices	1
Apatite from Slovakia	1
Synthetic Ruby and Sapphire	1
Spessartine from Tongbei, China	1
Magic Rock Crystal	1
An Unusual Tin Glass-filled Ruby	1
Art Nouveau Pendant with a Large Blister Pearl	1
Properties and Colouration of Orange Hackmanite from Afghanistan	1
Inhorgenta Trendfactory Munich 2025 Presentations	1
Spectroscopic Characteristics and Causes of Colour Modification in Heat-Treated Pink-to-Red Spinel from Luc Yen, Vietnam	1
Gemmological Characteristics of Turquoise from Hami, Xinjiang, China	1
The Successful Production of Spherical Bead-nucleated Abalone Pearls	1
Gemmology Today Podicles	1
International Jade Summit 2025 Presentations	0
Cobalt-bearing Blue Spinel from Lukande, near Mahenge, Tanzania	0
Microperthitic Star Orthoclase from Québec, Canada	0
RamanCrystalHunter Software and Database	0
Literature of Interest	0
A Remarkable Cr-bearing Red Musgravite	0
GIT Lab Note on Purplish Orange Dumortierite	0
Treated Orangey Pink HPHT-grown Synthetic Diamond with 776.4 nm PL Peak	0
Conferences	0
Sapphire: A Celebration of Colour	0
Hazy Spinel from Mahenge, Tanzania	0
LMHC Gemstone Information Sheet 2023 Updates	0
‘Aquafire’ Beryl from Brazil	0
Gold Demand Trends 2021	0
Asteriated Quartz Sphere with Sagenitic Rutile Inclusions	0
Sphalerite from Balmat, New York, USA	0
Learning Opportunities	0
Successful Commercial Culture of Abalone Half-Pearls in China	0
	0
GemID Diamond Fingerprinting Instrument	0
De Beers’ 2021 Sustainability Report	0
Gem-A Notices	0
Gold Demand Trends 2023	0
The Geology of Agate Deposits	0
GIT Information Center Reports	0
A New Reconstructed Turquoise Imitation Composed of Turquoise Powder with a PMMA (Acrylic) Binder	0
Learning Opportunities	0
Learning Opportunities	0
Gübelin Gem Museum Opens	0
Sailboat-like Inclusion in Ruby from China	0
Laboratory-grown Diamond Market Research Report	0
An Unusual Pink Synthetic Opal	0
‘Pom-Pom’ Quartz: A New Gem Material Containing Bassanite Inclusions, from Minas Gerais, Brazil	0
A Rare Bicoloured Yellow and Purple Topaz	0
Tourmaline from Calabar, Nigeria	0
Erratum	0
Additional Production of Rainbow Moonstone Feldspar from Madagascar	0

IIGJ-RLC Lab Information Circular Vol. 80	0
Decoding the Jewels: Renaissance Jewellery in Scotland	0
Study of an ‘Egyptian’ Emerald from the Mineralogy Museum at the Paris School of Mines	0
Rhodonite from Italy and Indonesia	0
Gold-in-Quartz from the McLaughlin Mine, California, USA	0
A Convincing Rough Diamond Imitation Manufactured from Topaz	0
Update on Emerald Mining at Campos Verdes, Goiás, Brazil	0
An Atypical ‘Box-bead’ Cultured Pearl in a Natural Pearl Strand	0
Xonotlite from Italy	0
Polymer Carving Imitating Dickite	0
Cinnabar Inclusions in Ethiopian Opal	0
Unusual Colour-zoned Emerald	0
Other Book Titles	0
Haüyne with Variable Fluorescence Behaviour	0
Topaz from Thanh Hoa, Vietnam	0
Updated Magilabs GemmoRaman	0
Gem-quality Dark Blue Haüyne from Afghanistan	0
RJC Human Rights Due Diligence Toolkit	0
Conferences	0
Black Sapphire Melee as a Black Diamond Imitation	0
A Photochromic Yellow Sapphire Coloured by Hole Centres	0
Gem-A Notices	0
The Journal’s Cumulative Index and Bibliography Lists Updated	0
New Hot-Pressing Technique for Amber and Its Identification Characteristics	0
The Secret Teachings of Gemcutting: 50 Classic Gemstone Designs	0
Afghanite of Exceptional Size and Quality from Badakhshan, Afghanistan	0
Clues to Understanding the Enigma of the Unusual Asterism in ‘Mercedes-Star’ Quartz	0
The Imperial Crown of the Holy Roman Empire, Part I: Photoluminescence and Raman Spectroscopic Study of the Gemstones	0
Quench-Fractured Bicoloured Synthetic Quartz: A Doubly Treated Gem Material	0
Literature of Interest	0
Platinum Jewellery Business Review 2022	0
Morganite from Numbi, Democratic Republic of the Congo	0
Conferences	0
KROMA Photomicrography Device and Colorimeter	0
A New Amber Imitation: Amber-Epoxy Composite	0
Mineralogical and Gemmological Characteristics of Gem-quality Forsterite-Serpentine from North-eastern China	0
NYC Jewelry Week Talks	0
Topaz from Colombia	0
Demantoid Garnet from Antetezambato, Northern Madagascar—Internal Characteristics and Their Use in Deciphering Geographic Origin	0
Traceability and Sustainability Initiatives for Precious Corals in Japan	0
Gifts to the Association	0
	0
Resin-filled Helical Growth Inclusion in Emerald	0
Quartz with Kyanite Inclusions from Brazil	0
A Chinese Seal Stone Consisting of Yellow Talc	0
Nineteenth Annual Sinkankas Symposium: San Diego County Gems and Minerals	0
Faceted Aeschynite-(Y) from Afghanistan	0
Pearl: Nature’s Perfect Gem	0
Colour-Change Garnet Showing Blue Colouration from Kamtonga, Kenya	0
Nephrite Jade from Washington State, USA, Including a New Variety Showing Optical Phenomena	0
A Convincing Glass Imitation of Emerald	0
Manufactured Silica Glass Sold as Rock-Crystal Balls	0
The Journal’s Cumulative Index and Bibliographies Updated	0
HRD M1 IoT Microscope	0
Erratum	0
Literature of Interest	0
Other Book Titles	0
Photochromic Scapolite from Baffin Island, Canada	0
Dolomite from Brumado, Brazil	0
Massive Cryptocrystalline Vesuvianite-Grossular from Eastern Afghanistan: Gemmological and Geological Considerations	0
Record-Breaking 20 and 30 ct Laboratory-Grown CVD Diamonds	0
Other Book Titles	0
	0
Gem-A Notices	0
Dyed Chatoyant Quartz Misrepresented as Cats-eye Chrysoberyl in an Antique Jewel	0
Masterpiece London: Collecting Natural Treasures from the Mineral Kingdom	0
RamanLab Software Suite	0
Phenakite from Volodarsk-Volynski, Ukraine	0
Characteristics of Agates from Ferdows, Eastern Iran	0
Cleavelandite (Albite) from Maine, USA	0
	0
IIGJ-RLC Lab Information Circular Vol. 79	0
Pale Blue Montebrasite Represented as Paraíba Tourmaline	0
Rhodonite from Slovakia	0
Other Book Titles	0
Photochromism and Phosphorescence of Tugtupite	0
A New Type of Green Synthetic Forsterite	0
Sustainable Jewellery Practices Course	0
Gemmological Society of Japan 2021 Annual Meeting Abstracts	0
Literature of Interest	0

Dreher Masterworks at the Houston Museum of Natural Science	0
Wulfenite from Namibia	0
Grassroots Research on Local Diamond Mining Impact Project	0
Mineral Spectroscopy Server Updated	0
Star Gems: A Fascinating World	0
Learning Opportunities	0
Gem-A Notices	0
Collectible Minerals Exhibit in Paris, France	0
Conferences	0
Moldavite from Chlum, Czech Republic: Mining and Gem Properties	0
Characterisation of Inclusions in ‘Petroleum Quartz’ with High-resolution X-ray Computed Micro-Tomography, and Infrared and Raman Spectroscopy	0
Platinum Jewellery Business Review 2023	0
A Melee-sized Colourless HPHT Synthetic Diamond with Dislocation-like Blue Fluorescence	0
New Finds at the Tourmaline King Mine, Pala, California, USA	0
Other Book Titles	0
Conferences	0
Large and Unusually Coloured Type IIb Diamonds, Possibly Cut from the Same Rough	0
	0
Sapphire from Sri Lanka with Twinned Gahnospinel Inclusion	0
Polystyrene Nucleus in a Freshwater Cultured Pearl	0
Benitoite Polished as Beads for Necklaces	0
Hybrid Diamond Master Set for Colour Grading	0
Gem Pursuit Podcasts	0
Pezzottaite-Beryl Intergrowths from a New Find in Madagascar	0
Emerald Containing Residues of Green Polishing Compound	0
Identification of Heat Treatment in Metamorphic-type Blue Sapphires Using FTIR Spectroscopy: New Insights on the 3232 cm−1 Band	0
JNA’s Pearl Report 2023–2024	0
Three-Rayed Asterism in Quartz: A Multi-Star Network	0
A Near-Colourless HPHT-grown Diamond with Natural-appearing Blue Fluorescence from N3 Centres	0
GemGenève Digital Update	0
Burbankite from Kola Peninsula, Russia	0
Pyrope-Almandine from Lao Cai Province, Vietnam	0
Learning Opportunities	0
Demantoid from Kerman Province, South-east Iran: A Mineralogical and Gemmological Overview	0
ISO Standard for Batches of Small Diamonds	0
Gemfields’ Market Report on Ruby in China	0
Peridot from Tanzania	0
Natural Diamond Council’s Diamond Pipeline Integrity	0
GAA Certificate in Opal Studies Course	0
Gamma Spectroscopy—A Possible Identification Method for the Artificial Irradiation of Morganite	0
Axinite Magnetism and Colouration	0
The Gemstones and Jewellery Community Platform Reports	0
Gemmological Society of Japan 2022 Annual Meeting Abstracts	0
Paraíba or Not? Cu-bearing Tourmaline with a Distinct Fe Concentration	0
	0
Mahenge Mining District, Tanzania—An Update	0
‘Red-cap’ Amethyst from Thunder Bay, Canada	0
On the Colour Mechanism of Blue Gahnite from Nigeria	0
Update on ‘Chrome’ Tourmaline from Landanai, Tanzania	0
Amber Art: A Journey Between Science and Beauty	0
Branko Gems’ Diamond Academies	0
Inspectrum Spectrometer	0
Natural Diamond Council Report on Education in Retail Settings	0
Abstracts from the 7th National Conference of Gemmology	0
Banjarmasin Diamond: War Booty from Borneo in Amsterdam	0
GIT Report on a Large Natural Freshwater Blister	0
Gem-A Graduation and Presentation of Awards	0
Spinel from the Pamir Mountains in Tajikistan	0
Sustainable Luxury and Jewelry	0
World Silver Survey 2022	0
Learning Opportunities	0
Diamond Identification Poster	0
Handbook of Gemmology, 5th edn.	0
Grandidierite Inclusions in a Sri Lankan Sapphire	0
Mica-Coated Emerald Imitations from Zambia	0
	0
Global Diamond Industry Report 2021–2022	0
Vicenzaoro 2024 Presentations	0
Amber: From Antiquity to Eternity	0
An Historical Alexandrite from the Mineralogy Museum of Paris School of Mines	0
De Beers Diamond Insight Report 2023	0
Hyalite Opal from Erongo, Namibia, Showing Green Daylight Fluorescence	0
‘Blood Vessel’ Opal from San Luis Potosí, Mexico	0
Gemmological Characteristics of Copal from Sumatra, Indonesia, Resembling ‘Root Amber’	0
CIBJO 2023 Conference Reports and Videos	0
Separating Elbaite from Liddi-coatite Paraíba-type Tourmaline	0
Precious: The History and Mystery of Gems Across Time	0
GemGenève November 2023 Presentations	0
HRD LT4 Lamp	0
Jade: A Gemologist’s Guide	0
Emerald from Afghanistan with Xenotime-(Y) Inclusion	0
Lab-Grown Diamond Consumer Segments	0
Minerals and Gemstones of Southern Africa	0
JNA’s Gemsworld 2023	0
Comparison of Emeralds from the Chitral District, Pakistan, with other Pakistani and Afghan Emeralds	0
Agate—Quartz Phenomenon	0
Jewelry Appraisal Handbook, 10th edn.	0
Vicenzaoro January 2025 Presentations	0
Letters	0
Natural Diamond Council’s Diamond Facts Report	0
New Production of Rhodizite-Londonite from Manjaka, Madagascar	0
Hexagonal Growth Structures Displaying Gota de Aceite Effect in Colombian Emerald	0
Antwerp Diamond Industry Data Online	0
Nephrite Jade from the Sky Zone, Wyoming, USA: Characteristics and Primary Hydrothermal Origin	0
CIBJO’s Guidelines for Measuring ESG Performance in the Jewellery Industry and Supply Chain	0