Recorded live session in which I discuss some well-known gemstones. When is a mineral actually a gemstone? In this session I show examples of mostly rough crystals of corundum (ruby and sapphire), beryl (emerald, aquamarine, morganite) and the tourmaline group (including schorl, dravite, elbaite, rubellite, etc.).
In live session #27, I will elaborate on the minerals from the tourmaline group.
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Ontdek elke maand de wereld van mineralen en edelstenen met mijn boeiende nieuwsbrief! Ontvang updates over nieuwe activiteiten, leer fascinerende feiten en lees de nieuwste analyses.
Mineral shows are a melting pot of passion, knowledge and discovery. If you have ever visited a mineral show, you know it is a unique…
Why is correct naming of gemstones and minerals important? Commercial names and fancy names can cause confusion. It also highlights legal aspects and examples of misleading marketing. Read more about standards such as those set by the IMA and CIBJO to promote uniform nomenclature.
Find out all about genuine Greenland nuummite and similar rocks! Learn how to recognize real nuummite and how to distinguish lookalikes from China and India. Also a nuummite-related rock from Finland is discussed. Read the article for tips on how to identify genuine nuummite and avoid misleading imitations. With images to show the differences.
Welcome to the Stack of Stones community podcast. In this first episode, I am happy to share the story behind Stack of Stones. My journey…
Genuine moonstone or white labradorite? At the bottom of the page you find a summary of the main points of this analysis. Rainbow moonstone is…
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