5 results
Report on the Different Masses of Iron, Found in the Eastern Cordillera of the Andes
Mariano Eduardo de Rivero y Ustáriz (1798–1857) was a Peruvian scientist, geologist, mineralogist, chemist, archaeologist, politician, and diplomat. After schooling in Arequipa, he was sent in 1810 at age 12 to London to study mathematics, physics, and languages. In 1817 he traveled to France to the École royale des mines de Paris to study mineralogy and chemistry. In France he met Joseph Louis Proust, Gay-Lussac, and Alexander von Humboldt. The latter became his mentor and, during the course of his travels in Europe, Rivero discovered a new iron-oxalate that ...
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Central Cultural Library, EAFIT University (School of Administration and Finance and Technology Institute)
Book of Royal Gemstones
This work, by Abu al-‛Abbās Ahmad b. Yūsuf al-Qaysī al-Tīfāshī, a 13th-century writer and mineralogist who was born in Tunisia and worked in Egypt, describes precious gems found in the treasuries of kings and rulers. The author lists 25 gemstones and dedicates a chapter to each. They include the ruby (yāqūt), emerald (zumurrud), topaz (zabarjad), diamond (almās), turquoise (fīrūzaj), magnetite (maghnātīs), agate (‛aqīq), lapis lazuli (lāzward), coral (marjān), and quartz (talq). In each chapter, the author discusses the causes of the gemstone’s formation, provenance, criteria for appraisal of ...
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National Library and Archives of Egypt
The Book on the Properties of Precious Gems
The title page identifies this manuscript as a copy of Kitab khawas al-jawāhir (The book on the properties of precious gems), written by Yaqūb ibn Ishāq al-Kindī in the ninth century. The work has 25 chapters, which are titled “On the knowledge of gems in general,” “On knowledge of rubies,” “On knowledge of emeralds,” “On knowledge of lapis,” and so forth. Each of these chapters gives basic information about these precious stones and their properties, as understood at the time. Information on the pricing of gems and the location of ...
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National Library and Archives of Egypt
The Blossoms of Thoughts Regarding the Precious Stones
Azhār al-Afkār fī Jawāhir al-Ahjār (The blossoms of thoughts regarding precious stones) is considered the most detailed and complete treatise of the Middle Ages on stones and their properties. Lapidaries, or treatises devoted entirely to the discussion of precious stones and their features, can be traced to ancient Greece. Pliny, in his Naturalis Historia (Natural history), mentions at least 20 authors as sources of his knowledge of stones, even though, of the works he cites, only the treatise On Stones by Theophrastus (circa 371–287 BC) has survived. Theophrastus’s ...
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Library of Congress
The Selection of Treasures Regarding Precious Stones
Kitāb nuhab al-dahā'ir fī ahwāl al-jawāhir (The selection of treasures regarding precious stones) is a treatise devoted to precious stones and, in particular, to the different kinds of hyacinth (a precious stone of the ancients, sometimes held to be the sapphire). The work opens with a draft of a poem on precious stones on the title page, probably copied at the same time as the manuscript, and proceeds with brief notes on the different kinds of hyacinth, on pearls, and on other precious stones found in water. The author ...
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Library of Congress