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GEMSNOTES AND EXTRACTSBYAUGUSTO CAS
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CONTENTS.INTRODUCTION.General Obser
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INTRODUCTION.GENERAL OBSERVATIONS.M
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INTRODUCTION.Chemical discoveries v
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INTEODUCTION. 5The natural characte
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INTBODUCTION. 7represents the speci
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INTRODUCTION. 9Many crystals presen
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INTRODUCTION. 112. HISTORY AND VALU
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INTRODUCTION. 13lets, which, were g
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INTRODUCTION. 151. Hardness. 5. Che
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ADULAEIA. 19beauty. In commerce it
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AQUAMAEINA. 21lose their colour. Th
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AGATE. 23the cutting discovers circ
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ALABASTRITE AND ALABASTER. 25of a v
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ALMANDINK 27Those alabasters are sp
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AMAZZONITE. 29The amazzonite is abs
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AMBER. 31believed that it was a veg
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AMETHYST. 33VIIITHE AMETHYST.THE am
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APATITE. 35In all ages amethysts we
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ARGIRITE. 37argirite, or magnes, wa
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ASTERIA. 39Caire saw in London a la
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IVORY. 41of their great antiquity,
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AVENTURINE. 43" Which some people c
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BERYL. 45called Thumerite, from the
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do not think itunlikelyBOORT. 47tha
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CALCEDONY. 49white ;when broken, th
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CALCEDONYX. 51At present this stone
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CARUON. 53It is black, opaque, vitr
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CYMOPHANE. 55When analysed, it yiel
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CLOROPHANE. 57Although the cymophan
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SHELLS. 59it should be resumed, in
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CORAL. 61loses the calcareous subst
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CORUNDUM. 63In the East both, men a
- Page 75 and 76: CAENELIAN. 65XXVIII.CARNELIAN.CARNE
- Page 77 and 78: CUEYSOBERYL.G7nature of its substan
- Page 79 and 80: CHRYSOLITE.G9Less hard than all oth
- Page 81 and 82: CERYSO PRASE. 71It is generally tra
- Page 83 and 84: ROCK CRYSTAL. 73forms are always id
- Page 85 and 86: DIAMOND. 75or, as they are commonly
- Page 87 and 88: DIAMOND. 77tallic vapours, which, i
- Page 89 and 90: DIAMOND. 79used it ornamentally. Ot
- Page 91 and 92: DIAMOND. 81are found ;the most famo
- Page 93 and 94: DIAMOND. 83A passage in "Pliny (xxx
- Page 95 and 96: DIAMOND. 85smith, having perceived
- Page 97 and 98: DIAMOND. 87century, when trying to
- Page 99 and 100: DIAMOND. 89Table of the Prices of D
- Page 101 and 102: DIAMOND. 91long time, and from whom
- Page 103 and 104: DIAMOND. 93still belongs, its value
- Page 105 and 106: DIAMOND. 95fore, in Persia, would n
- Page 107 and 108: DIAMOND. 97first part of the eighte
- Page 109 and 110: DIAMOND. ,99The treasury of Dresden
- Page 111 and 112: DIAMOND. 101Carbon is combustible a
- Page 113 and 114: JASPEE. 108violet, and green are fo
- Page 115 and 116: JASPER. 105nish a great deal of thi
- Page 117 and 118: D1CHE01TE. 107ferent colours blue,
- Page 119 and 120: ESSONITE. 109This substance isby ma
- Page 121 and 122: EUCLASIO.Illprecision in an} T dete
- Page 123 and 124: FLUOEINE. 113false amethyst, when i
- Page 125: JACINTH. 115various articles, belie
- Page 129 and 130: JAEGOON. 119It isalways found in a
- Page 131 and 132: GARNET, 121hesitation in calling it
- Page 133 and 134: GARNET. 123When analysed, they give
- Page 135 and 136: HAUYNA. 125very rare, and the few t
- Page 137 and 138: IDOCEAS1UM. 127The hauyna is not mu
- Page 139 and 140: HYDEOPHANE. 129porous. It takes a g
- Page 141 and 142: IBIS. 131LI.IRIS.A VARIETY of very
- Page 143 and 144: LABEADOR. 133The labrador has a gre
- Page 145 and 146: LAPIS LAZULI, OR LAZULITE. 135I bel
- Page 147 and 148: LAPIS LAZULI, OR LAZULITE. 137beaut
- Page 149 and 150: PETRIFIED WOOD. ]39LYI.PETRIFIEDWOO
- Page 151 and 152: composed ofLUMACHELLA. 141scales ra
- Page 153 and 154: MALACHITE. 143Corsi states, though,
- Page 155 and 156: MARQUISITE. 145stone render it litt
- Page 157 and 158: MICA. 147it is freely soluble in ac
- Page 159 and 160: MOSAIC. 149duced by the diverging a
- Page 161 and 162: NATROLITE. 151LXY.NATROLITE.THIS mi
- Page 163 and 164: CATS EYE. 153It consists of a quart
- Page 165 and 166: OLIVINE. 155LXIX.OLIVINE.SILICATE o
- Page 167 and 168: OOLITE. 157to good account, and giv
- Page 169 and 170: OPAL. 159chinks, in which, the air
- Page 171 and 172: OWAEOVITE.1G1It is met with in vein
- Page 173 and 174: PASTES. 163The touchstone came form
- Page 175 and 176: PASTES. 165glass;and we know that A
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PEEWOT.1G7canic sands, it acquired
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PEARL. 169Different opinions are ex
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PEARL. 171The daring Americans go t
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1\EAEL. 173In one of Pompey's trium
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FALSE PEARLS. 175Two Greek merchant
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FALSE PEARLS. 177For here the beadm
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PYEOXENUM. 179The basalt pyroxenum
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PLASMA. 181%LXXXI.PLASMA.UNDER this
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PORPHYRY. 183The variety of porphyr
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PEASE. 185It takes a polish which w
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RUBELLITE. 187LXXXV.RUBELLITE.THIS
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RUBY. 189The specific gravity of th
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RUBY. 191acausti and apiroti " cum
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RUBY. 193than those of the corundum
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'ItUBY. 193rubies, but the deceit i
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RUBY. 197well engraved by the tool,
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SARD. 199Its specific gravity is eq
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SARDONYX. 201In this well-known sto
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EMERALD. 203This variety of corundu
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EMERALD. 205Silex 68-50Alumina .. .
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EMERALD. 207Coptos, a city of the T
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EMERALD. 209than 10 lire the carat.
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EMEEY. 211Oriental emery is nothing
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STALACTITE. '213They have a fibrous
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TOPAZ. 215sometimes very large. It
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TOPAZ. 217was made by Damelle in 17
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TRIPOLI. 210XCYI.TRIPOLI.THIS miner
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TURQUOISE. 221Fine turquoises of th
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VARIOLITE. 223lie plainly says that
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SAPPHIBE. 225formerly, but at prese
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SAPPHIRE. 227" Dolce color d' orien
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SAPPHIRE. 229and very seldom purple
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SAPPHIRE. 231The ancients attribute
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SAPPHIRE. 233fine sapphire on which
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9.6.EPILOGUE. 235out a lengthened d
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|EPILOGUE. 2371st. Of the composite
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EPILOGUE. 2393rd. Of the silicate o
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EPILOGUE. 241I do not pretend in th
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UNIVERSITY OF CALIFORNIA LIBRARYBER