[Jewelry making - Article 00061] - Re: [Orchid] Silky Aquamarine

[John Donivan]

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    I passed on this thinking some GG's would chime in. To answer the
    real question, somewhat, anyway. A stone is supposed to be clear
    (say). When the crystal grows sometimes there are other things that
    happen, which I can't define scientifically (GG's?) and very fine
    lines grow inside of it. It's similar to rutilated quartz, but
    microscopic in scale. I really don't know the science of the
    gemology, I'm afraid, but in your hand when a stone is "silky" it has
    a bit of a fog to it, and sometimes it will have an inner glow
    because of the way the light is bouncing around - it's like there's a
    mesh of spiderwebs inside it. A star sapphire is inherently silky,
    and the "silk" in oriented within the crystal such that the light is
    channeled into a star. It can be an attractive thing in some stones,
    though it's considered a flaw in grading mostly. A silky ruby can
    look like it has a fire burning inside it, for instance. Any stone
    can have it's own beauty, but an aqua is "supposed" to be crystal
    clear.... 

http://www.donivanandmaggiora.com
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