Journal of Gemmology

Article	Citations
A New Occurrence of Rhodonite Associated with Nephrite Jade in Washington State, USA	13
An Exceptional Carved ‘Enhydro’ Chalcedony	4
Goldschmidt2025 Abstracts: ‘Diamond: Chronicles of the Mantle’	3
‘Star of David’ Pattern Produced by a Trapiche Emerald from Colombia	3
Bicoloured Sphalerite from Kazakhstan with Negative Crystal Inclusions	2
Inhorgenta Trendfactory Munich 2025 Presentations	2
Rapaport Podcasts	2
Gempedia: A Comprehensive Glossary for Gemstones and Gemmology	2
A Purple Sapphire Containing Interesting Inclusions: Formation Insights	2
Synthetic Ruby and Sapphire	2
Three Repaired and Filled Hollow Pearls	2
Properties and Colouration of Orange Hackmanite from Afghanistan	1
Mineral Etymology Website	1
Gem-A Notices	1
Stabilised Aquamarine Cabochon with Unusual Colouring	1
Large Aquamarine Overgrown by Synthetic Emerald	1
Magic Rock Crystal	1
Watch & Jewellery Initiative 2030 Reports	1
Learning Opportunities	1
The Successful Production of Spherical Bead-nucleated Abalone Pearls	1
Advanced Instrumentation for Identifying Sugar-Acid-Treated Opal	1
An Unusual Tin Glass-filled Ruby	1
AGTA GemFair Tucson Seminars	1
Diapix V2 Imaging System and DiaTrue CXL3	1
Gemmology Today Podicles	1

Gemstone Supplier Conversations Guide	1
Pink-Orange CVD-grown Synthetic Diamonds with Ni Impurities	0
IIGJ-RLC Lab Information Circular Vol. 80	0
Wulfenite from Namibia	0
Colombian Emerald / Esmeralda Colombiana	0
Other Book Titles	0
Mineralogical and Gemmological Characteristics of Gem-quality Forsterite-Serpentine from North-eastern China	0
A Photochromic Yellow Sapphire Coloured by Hole Centres	0
Kimberley International Diamond Symposium Presentations	0
Dyed Chatoyant Quartz Misrepresented as Cats-eye Chrysoberyl in an Antique Jewel	0
Platinum Jewellery Business Review 2023	0
Identification of Heat Treatment in Metamorphic-type Blue Sapphires Using FTIR Spectroscopy: New Insights on the 3232 cm−1 Band	0
Emerald from Afghanistan with Xenotime-(Y) Inclusion	0
Conferences	0
Natural Diamond Council Report on Education in Retail Settings	0
Morganite from Numbi, Democratic Republic of the Congo	0
CIBJO’s Guidelines for Measuring ESG Performance in the Jewellery Industry and Supply Chain	0
Moldavite from Chlum, Czech Republic: Mining and Gem Properties	0
Rhodonite from Italy and Indonesia	0
A Chinese Seal Stone Consisting of Yellow Talc	0
Exceptional Väyrynenite Gemstones	0
Identification of an ‘Avdeevite’-Beryl Intergrowth	0
Photochromism and Phosphorescence of Tugtupite	0
‘Pom-Pom’ Quartz: A New Gem Material Containing Bassanite Inclusions, from Minas Gerais, Brazil	0
Emerald from Zhen’an (Shaanxi, Central China): Gemmological Characterisation and Origin Determination Using Machine Learning	0
NYC Jewelry Week Talks	0
Synthetic Sapphires Resembling Paraíba-type Tourmaline	0
Treated Orangey Pink HPHT-grown Synthetic Diamond with 776.4 nm PL Peak	0
Rapaport GEMTalks Podcasts	0
KROMA Photomicrography Device and Colorimeter	0
A ‘Paraíba YAG’ with Unusual Internal Features	0
Colour-Change Garnet Showing Blue Colouration from Kamtonga, Kenya	0
Unusual Amethyst and Carnelian Association from Madagascar	0
Gem-A Notices	0
Gem-quality Hurlbutite from Myanmar	0
Polymer Carving Imitating Dickite	0
Coral Exhibition in Hong Kong	0
Quartz with Kyanite Inclusions from Brazil	0
A Near-Colourless HPHT-grown Diamond with Natural-appearing Blue Fluorescence from N3 Centres	0
Lotus Gemology’s Research Tools	0
60th Myanmar Gems Emporium 2025	0
ISO Standard for Batches of Small Diamonds	0
Large and Unusually Coloured Type IIb Diamonds, Possibly Cut from the Same Rough	0
Other Book Titles	0
Cleavelandite (Albite) from Maine, USA	0
Learning Opportunities	0
	0
Errata	0
Axinite Magnetism and Colouration	0
Pearl: Nature’s Perfect Gem	0

Other Book Titles	0
De Beers Diamond Insight Report 2023	0
JNA’s Pearl Report 2023–2024	0
Precious: The History and Mystery of Gems Across Time	0
JNA’s Gemsworld 2023	0
Spessartine from Engare Naibor, Tanzania	0
Unusual Fluorescence in a Beryllium-treated Ruby	0
Comparison of Emeralds from the Chitral District, Pakistan, with other Pakistani and Afghan Emeralds	0
GAA Certificate in Opal Studies Course	0
A Response to Delaunay et al. (2026): The 3309 cm–1 FTIR Series as an Indicator of Heat Treatment	0
Gamma Spectroscopy—A Possible Identification Method for the Artificial Irradiation of Morganite	0
The Moldavite Phenomenon	0
Letters	0
Natural Diamond Council’s Diamond Pipeline Integrity	0
Austinite from Mexico	0
Mahenge Mining District, Tanzania—An Update	0
Diamond Identification Poster	0
‘Red-cap’ Amethyst from Thunder Bay, Canada	0
Conferences	0
Decoding the Jewels: Renaissance Jewellery in Scotland	0
Learning Opportunities	0
Dolomite from Brumado, Brazil	0
Further Characterisation of Native Copper Inclusions in Cu-Bearing Tourmaline	0
Abstracts from the 7th National Conference of Gemmology	0
Amber: From Antiquity to Eternity	0
Unusual Yellow-Green Sapphire Showing a Colour Shift	0
Antique Jewelry from 1800 to 1939: Appreciating the Dreams	0
Learning Opportunities	0
Haüyne with Variable Fluorescence Behaviour	0
Other Book Titles	0
Rhodonite from Slovakia	0
CIBJO 2023 Conference Reports and Videos	0
An Unusual Pearl Imitation Composed of an Aluminium Oxide Ceramic Material	0
Literature of Interest	0
A Non-nacreous Spondylus Pearl	0
A Melee-sized Colourless HPHT Synthetic Diamond with Dislocation-like Blue Fluorescence	0
Afghanite of Exceptional Size and Quality from Badakhshan, Afghanistan	0
Update on ‘Chrome’ Tourmaline from Landanai, Tanzania	0
Star Gems: A Fascinating World	0
	0
Characterisation of Inclusions in ‘Petroleum Quartz’ with High-resolution X-ray Computed Micro-Tomography, and Infrared and Raman Spectroscopy	0
Laboratory-grown Diamond Market Research Report	0
Jewellery Consumer Trends in China	0
Pezzottaite-Beryl Intergrowths from a New Find in Madagascar	0
‘Blood Vessel’ Opal from San Luis Potosí, Mexico	0
Minerals and Gemstones of Southern Africa	0
A New Type of Green Synthetic Forsterite	0
A New Reconstructed Turquoise Imitation Composed of Turquoise Powder with a PMMA (Acrylic) Binder	0
Massive Cryptocrystalline Vesuvianite-Grossular from Eastern Afghanistan: Gemmological and Geological Considerations	0
The Blue Colour of Aquamarine: An Update to Andersson (2023)	0
Other Book Titles	0
Polystyrene Nucleus in a Freshwater Cultured Pearl	0
Magilabs ‘Spectroscopy in Gemology’ Course	0
Banjarmasin Diamond: War Booty from Borneo in Amsterdam	0
LMHC Information Sheets	0
Burbankite from Kola Peninsula, Russia	0
Nephrite Jade from the Sky Zone, Wyoming, USA: Characteristics and Primary Hydrothermal Origin	0
Characteristics of Jadeite Jade and Omphacite Jade from Kazakhstan	0
Natural Diamond Council’s Diamond Facts Report	0
Pyrope-Almandine from Lao Cai Province, Vietnam	0
The Journal’s Cumulative Index and Bibliographies Updated	0
Topaz from Colombia	0
The Beauty of Diamond Fluorescence	0
Reply to Review	0
Three-Rayed Asterism in Quartz: A Multi-Star Network	0
Revisiting the Beilby Layer	0
Peridot from Tanzania	0
GIT Report on a Large Natural Freshwater Blister	0
	0
Discovery and Characterisation of ‘Jaguar’ Quartz from Tanzania	0
LMHC Gemstone Information Sheet 2023 Updates	0
Iridescent Andradite from Niger	0
Grandidierite Inclusions in a Sri Lankan Sapphire	0
Erratum	0
Unusual Colour-zoned Emerald	0
Gem-A Notices	0
Low-heft Pen Pearl Partially Covered with Nacre	0
Literature of Interest	0
Additional Production of Rainbow Moonstone Feldspar from Madagascar	0
Other Book Titles	0

Hazy Spinel from Mahenge, Tanzania	0
Gem-quality Dark Blue Haüyne from Afghanistan	0
New Hot-Pressing Technique for Amber and Its Identification Characteristics	0
Literature of Interest	0
Platinum Jewellery Business Review 2026	0
GemID Diamond Fingerprinting Instrument	0
Learning Opportunities	0
The Imperial Crown of the Holy Roman Empire, Part I: Photoluminescence and Raman Spectroscopic Study of the Gemstones	0
Successful Commercial Culture of Abalone Half-Pearls in China	0
Pale Blue Montebrasite Represented as Paraíba Tourmaline	0
Gemmological Characteristics of Copal from Sumatra, Indonesia, Resembling ‘Root Amber’	0
Sphalerite from Balmat, New York, USA	0
A New Manufactured Gem Material, ‘Crysilliz’	0
Gem-A Notices	0
Conferences	0
12th International Kimberlite Conference Papers	0
Emerald Containing Residues of Green Polishing Compound	0
Learning Opportunities	0
HFSE-enriched Metamorphic Blue Sapphires: FTIR and Trace-element Study, and Implications for Heat-Treatment Detection	0
Resin-filled Helical Growth Inclusion in Emerald	0
	0
Xonotlite from Italy	0
Other Book Titles	0
Amber Art: A Journey Between Science and Beauty	0
Two Brown Non-nacreous Natural Pearls with Embossed Surface Features	0
Characteristics of Agates from Ferdows, Eastern Iran	0
Literature of Interest	0
Vicenzaoro 2024 Presentations	0
Topaz from Thanh Hoa, Vietnam	0
Grassroots Research on Local Diamond Mining Impact Project	0
Collectible Minerals Exhibit in Paris, France	0
	0
Agate—Quartz Phenomenon	0
New Production of Rhodizite-Londonite from Manjaka, Madagascar	0
Hybrid Diamond Master Set for Colour Grading	0
GemGenève November 2023 Presentations	0
Handbook of Gemmology, 5th edn.	0
Learning Opportunities	0
‘Sapphire’ Beads Consisting of Stabilised Kyanite	0
An Atypical ‘Box-bead’ Cultured Pearl in a Natural Pearl Strand	0
Green Opalised Wood from West Java, Indonesia	0
Vicenzaoro January 2025 Presentations	0
Traceability and Sustainability Initiatives for Precious Corals in Japan	0
GemGenève Digital Update	0
Near-Colourless Grossular from Tanzania	0
Nephrite Jade from Washington State, USA, Including a New Variety Showing Optical Phenomena	0
Other Book Titles	0
Antwerp Diamond Industry Data Online	0
Literature of Interest	0
Gem Pursuit Podcasts	0
Unheated Pink Sapphire from Madagascar with OH-related 3232 and 3185 cm–1 FTIR Bands	0
Heat-treated Ruby with New Lead-free Glass Fillers: Ba-Zr-Y and Er	0
RamanCrystalHunter Software and Database	0
An Historical Alexandrite from the Mineralogy Museum of Paris School of Mines	0
International Jade Summit 2025 Presentations	0
Conferences	0
GIT Lab Note on Purplish Orange Dumortierite	0
Cobalt-bearing Blue Spinel from Lukande, near Mahenge, Tanzania	0
Tourmaline from Calabar, Nigeria	0
Pink Synthetic Sapphire with Unusual Garnet-like Inclusions	0
A Remarkable Cr-bearing Red Musgravite	0
EU Restrictions on Russian Diamonds FAQs	0
AmberArt II: A Journey Between Science and Beauty	0
A Rare Bicoloured Yellow and Purple Topaz	0
Updated Magilabs GemmoRaman	0
A Review of—and Proposed Explanation for—the Aquamarine (Blue to Green) and Yellow Colouration in Iron-bearing Beryl	0
Faceted Aeschynite-(Y) from Afghanistan	0
Sapphire from Sri Lanka with Twinned Gahnospinel Inclusion	0
Gold-in-Quartz from the McLaughlin Mine, California, USA	0
Benitoite Polished as Beads for Necklaces	0
Mineral Spectroscopy Server Updated	0
Opal with Epidote Inclusions from Madagascar	0
An Unusual Purplish Chameleon Diamond	0
Phenakite from Volodarsk-Volynski, Ukraine	0
Gübelin Gem Museum Opens	0
Nundorite as an Ornamental Gem Material	0
Nineteenth Annual Sinkankas Symposium: San Diego County Gems and Minerals	0
Conferences	0
Conferences	0
Mineral Inclusions in Rock Crystal Quartz from Vietnam	0
Jewelry Symposium Articles	0
The Journal’s Cumulative Index and Bibliographies Updated	0
Unsupervised Machine Learning for the Geographic Origin Determination of Cu-bearing Tourmaline	0
HRD M1 IoT Microscope	0
Clues to Understanding the Enigma of the Unusual Asterism in ‘Mercedes-Star’ Quartz	0
RamanLab Software Suite	0
Shells: A Natural and Cultural History	0
Gold Demand Trends 2023	0
Conferences	0
The Geology of Agate Deposits	0
Study of an ‘Egyptian’ Emerald from the Mineralogy Museum at the Paris School of Mines	0
JNA’s Pearl Report 2025–2026	0
Microperthitic Star Orthoclase from Québec, Canada	0
Erratum	0
HRD LT4 Lamp	0