Please use this identifier to cite or link to this item: https://ir.swu.ac.th/jspui/handle/123456789/13548
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dc.contributor.authorSripoonjan T.
dc.contributor.authorWanthanachaisaeng B.
dc.contributor.authorLeelawatanasuk T.
dc.date.accessioned2021-04-05T03:24:38Z-
dc.date.available2021-04-05T03:24:38Z-
dc.date.issued2016
dc.identifier.issn13554565
dc.identifier.other2-s2.0-85006340266
dc.identifier.urihttps://ir.swu.ac.th/jspui/handle/123456789/13548-
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85006340266&doi=10.15506%2fJoG.2016.35.2.156&partnerID=40&md5=e84c0776fde0d352c497cbc4478a1358
dc.description.abstractIn the past several years, Mozambique has emerged as one of the world's most important sources of ruby, and unheated stones from this country are in particularly strong demand. Nevertheless, it is common for these rubies to undergo low-temperature heating (~1,000°C or below) to slightly improve their colour. The treated stones may show very subtle or no alteration of internal features (e.g. mineral inclusions, 'fingerprints', needles, 'silk', etc.). However, 'iron-stained' surface-reaching fractures in the rubies commonly display a noticeably more intense colour after heating. Raman and FTIR spectroscopy were used to document a transition from goethite to hematite within stained fractures in samples heated to 500°C and 600°C. The identification of hematite within such fractures provides key evidence for the low-temperature heat treatment of Mozambique ruby. © 2016 The Gemmological Association of Great Britain.
dc.titlePhase transformation of epigenetic iron staining: Indication of low-temperature heat treatment in Mozambique ruby
dc.typeArticle
dc.rights.holderScopus
dc.identifier.bibliograpycitationJournal of Gemmology. Vol 35, No.2 (2016), p.156-161
dc.identifier.doi10.15506/JoG.2016.35.2.156
Appears in Collections:Scopus 1983-2021

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