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EurOpal is an exclusive series of publications by Peter Semrád which are dedicated to the European opal and its historically important locality Červenica-Dubník. Edition EurOpal - The World of Minerals The second part, The World of Minerals, is focused on species occurring at the locality. Principal themes such as succession, opals, associated ores, sulphates and collecting are covered. The main thread includes additional discussions of scientific and historical issues in order to enhance the context of this work. The book is bilingual - Slovak and English. Edition EurOpal - The Beauty of the Gem Edition EurOpal is an exclusive series of publications by Peter Semrád which are dedicated to the European opal and its historically important locality Červenica-Dubník. The first part, The Beauty of the Gem, is focused on the gemmological properties of the stone. Principal themes such as types of opal, opal body, play-of-colour, opal cut and provenance are covered. The main thread is complemented by discussions of scientific and historical issues that are relevant to keep the structure of the work consistent. The book is bilingual - Slovak and English. Here you can buy the books separately. | ||||||||
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