Recorded live session from the Crystal Museum Borculo. I show all kinds of examples of the well-known mineral amethyst, a purple variety of quartz. Featured are different growth forms of amethyst and small and (very) large examples of amethyst from around the world!
In live session #3, amethyst also came up briefly as one of the many different types of quartz.
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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…
In this article, we explore the fascinating world of geodes, hollow spaces in rocks filled with beautiful minerals such as chalcedony, agate, and quartz. Well-known examples include the amethyst geodes from Brazil and the Las Choyas “coconut” geodes from Mexico. We also discuss lesser-known but unusual varieties such as the Puma agates and Red Fox agates from Argentina, and the Dugway geodes from Utah, USA. Discover how the locality and composition of geodes give them a unique identity, and learn about the local names and typical features that set them apart.
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.
New developments are piling up at Stack of Stones. Today, I am pleased to delight you with the first monthly ‘Written in Stone’ newsletter on…
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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