Batu Kecubung Lionting Alam
Kecubung Lionting Alam Yang belum diasah.... Batu ini memiliki Kilau seperti Kaca yang berwarna hitam bening
Zircon is a common inclusion in Madagascar sapphire, which is important because they span the color spectrum. During heat treatment, included mineral crystals are subjected to the same condition as the corundum host, but since they have different thermodynamic and chemical properties, they may expand, recrystallize, melt observation of destroyed or modified mineral inclusion using an optical microscope has long been used to identify heat-treated sapphire
Unheated samples, the unheated zircon inclusions were transparent with a slightly elongate crystal habit and well-developed {110} form, although many were slightly rounded, displayed cluster.
The crystal faces of the zircons were flat or slightly rounded and reflective. Some of larger zircons crystal and clusters were accompanied by redial fracture in the surrounding corundum. The surface showed uniform zircon crystal with sharp planar or slightly rounded boundaries and no evidence of decomposition; a few displayed growth zoning.
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