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The first description of the synthesis of emerald is given in a number of works by Jacques Joseph Ebelmen in the period 1846-1851 (1814-1852). However, his experiments had more scientific significance, although they showed the possibility of synthesizing such stones as emerald. And until the early 1890s, experiments in growing emerald had no commercial significance.
Opal, as a gemstone, captivates with its unique shine and play of color. However, in order to preserve its exquisite beauty and ensure a long service life,
For a long time, during which humanity dealt with precious stones, gemology was not singled out as a single science.
The asterism effect in gemstones is caused by the unique crystallographic properties and internal structure of minerals.
