The Chemistry, Properties And Tests of Precious Stones
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688Iolite (Cordierite) 7-1/4 2. 641Lapis lazuli 5-1/2 2. 461Sapphire 9 4. 049-4. 060Topaz 8 3. 500-3. 520Tourmaline 7-1/4 3. 160Turquoise 6 2. 800 GREEN STONES.
_Hardness. _ _Specific Gravity. _ (See Chapter VII. ) (See Chapter VIII. )Aquamarine 7-3/4 2. 701-2. 800Chrysoberyl 8-1/2 3. 689-3. 752Chrysolite 6-7 3. 316-3. 528Chrysoprase (Quartz) 7 2. 670Diamond 10 3. 502-3. 564Dioptase 5 3. 289Emerald and Oriental Emerald 7-3/4 2. 690Euclase 7-1/2 3. 090Garnet (see also Red Garnet) 6-1/2-7-1/2... 3. 400-4. 500Heliotrope (Chalcedony) 6-1/2 2. 598-2. 610Hiddenite (a variety of Spodumene) 6-1/2-7 3. 130-3. 200Jade 7 3. 300-3. 381Jadeite 7 3. 299Malachite 3-1/2 3. 710-3. 996Peridot (a variety of Chrysolite) 6-7 3. 316-3. 528Plasma (a variety of Chalcedony) 6-1/2 2. 598-2. 610Quartz 7 2. 670Sapphire 9 4. 049-4. 060Topaz 8 3. 500-3. 520Tourmaline 7-1/4 3. 148 VIOLET STONES.
_Hardness. _ _Specific Gravity. _ (See Chapter VII. ) (See Chapter VIII. )Amethyst 7 2.
What to read after The Chemistry, Properties And Tests of Precious Stones?
You can find similar books in the "Read Also" column, or choose other free books by Mastin John to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
688Iolite (Cordierite) 7-1/4 2. 641Lapis lazuli 5-1/2 2. 461Sapphire 9 4. 049-4. 060Topaz 8 3. 500-3. 520Tourmaline 7-1/4 3. 160Turquoise 6 2. 800 GREEN STONES.
_Hardness. _ _Specific Gravity. _ (See Chapter VII. ) (See Chapter VIII. )Aquamarine 7-3/4 2. 701-2. 800Chrysoberyl 8-1/2 3. 689-3. 752Chrysolite 6-7 3. 316-3. 528Chrysoprase (Quartz) 7 2. 670Diamond 10 3. 502-3. 564Dioptase 5 3. 289Emerald and Oriental Emerald 7-3/4 2. 690Euclase 7-1/2 3. 090Garnet (see also Red Garnet) 6-1/2-7-1/2... 3. 400-4. 500Heliotrope (Chalcedony) 6-1/2 2. 598-2. 610Hiddenite (a variety of Spodumene) 6-1/2-7 3. 130-3. 200Jade 7 3. 300-3. 381Jadeite 7 3. 299Malachite 3-1/2 3. 710-3. 996Peridot (a variety of Chrysolite) 6-7 3. 316-3. 528Plasma (a variety of Chalcedony) 6-1/2 2. 598-2. 610Quartz 7 2. 670Sapphire 9 4. 049-4. 060Topaz 8 3. 500-3. 520Tourmaline 7-1/4 3. 148 VIOLET STONES.
_Hardness. _ _Specific Gravity. _ (See Chapter VII. ) (See Chapter VIII. )Amethyst 7 2.
What to read after The Chemistry, Properties And Tests of Precious Stones?
You can find similar books in the "Read Also" column, or choose other free books by Mastin John to read onlineMoreLess
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