000			01993nam a22002537i 4500
005			20250819190205.0
008			250715s2023 us a|||fr|||| 00| 0 eng d
020			_a9781647404055
040			_aEG-GaU‬‬ _cEG-GaU‬‬ _dEG-GaU‬‬ _erda
082	0	4	_223 _a549.23 _bP.E.H
100	1		_aPrice, Elisha, _eeditor. _960254
245			_aHandbook of Gemmology / _cedited by Elisha Price.
250			_a1st edition.
264		1	_aNew York : _bSyrawood Publishing House, _c2023
300			_a206 pages : _billustrations, colour plates ; _c28 × 21.6 cm.
336			_2rdacontent _atext _btxt
337			_2rdamedia _aunmediated _bn
338			_2rdacarrier _avolume _bnc
520			_aA gemstone is a precious or semi-precious stone, which is used for making jewelry and is used as an ornament due to its antiquity. Gemmology is the branch of mineralogy, which deals with the study of natural and artificial gemstones. The Earth's crust is composed of three types of rocks, including metamorphic, igneous and sedimentary. Each type of rock originates under various conditions resulting in a diverse range of gemstones. They can be categorized as precious gemstones and semi-precious gemstones. Precious gemstones include sapphires, diamonds, emeralds and rubies. All other gemstones are classified as semi-precious gemstones. Geological conditions like redox conditions, temperature and chemistry determine the amount of trace chemical components. The difference between a gemstone and mineral specimens can be determined through such trace chemical components. The color of the gemstone is determined by these components and can provide a basis for identifying the gemstone’s origin. This book provides comprehensive insights on gemmology. Researchers and students in this field will be assisted by it.
650		0	_aGemmology _vStudy and teaching _960255
650		0	_aGemstones _vIdentification _960256
942			_2ddc _cBK
999			_c10995 _d10995