The Magic and Science of Jewels and Stones
698,00 TL
"...In ancient times the minerals comprising or included in this important group were commonly known by the name Lapis Nephriticus or KDevamını oku
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"...In ancient times the minerals comprising or included in this important group were commonly known by the name Lapis Nephriticus or Kidney Stone, and from this name in the 18th century Dr. A. G. Werner suggested the term Nephrite. To the Nephrite varieties the general term Jade is universally applied. The name occurs in old writings as jad and jadde, and is derived from the Spanish Hijada, kidney. Sir Walter Raleigh in 1595 wrote of this "kinde of stones which the Spaniards call Piedras Hijadas and we use for spleene stones." Chemically the species included under the name "jade" are not the same, the nephrite jade being a silicate of lime and magnesia and the jadeite a silicate of sodium and alumina, but the modern scientist in common with the ancient scientist binds them together under the one denomination—kidney stone. In the 19th century Professor A. Damour demonstrated the chemical
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