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Ch. 8: Synthetic Gemstones

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PART VIII.
Artificial Production of real Precious Stones. Results obtained. Becquerel. Ebelman. Gaudin. Henri Sainte- Claire Deville. De Senarmont. Daubrie. Durocher. Sainte-Claire Deville and Caron, &fc.
" Beset with emeralds And diamonds with sparkling nibies red In checlcerwise, by strange invention."
We have seen that the elementary constituents of precious stones must have existed once in a con­dition that allowed them to move freely; and that this condition was obtained by one of three general methods—
1st.—Direct fusion of the substance by a suf­ficient heat.
2d.—Dissolution at variable temperatures of the mineral substance in a foreign body, and complete or partial volatilization of the dissolvent; or crys­tallization without evaporation under the influence of natural forces, either alone or aided by heat, electricity, &c.
3d.—Prior reduction into vapour of substances destined to react upon each other.
Ch. 7: Synthetic Diamonds Page of 296 Ch. 8: Synthetic Gemstones
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