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  1. 1
    Gemstone Grinding Process Improvement by Using Impedance Force Control

    Gemstone Grinding Process Improvement by Using Impedance Force Control

    Gemstone Grinding Process Improvement by Using Impedance Force Control
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  2. 2
    Chemical Treatment Effects of Blue, Yellow and Green Colors with Heating Methods on Agates of Cheshme Shoor Area, Qom, Iran

    Chemical Treatment Effects of Blue, Yellow and Green Colors with Heating Methods on Agates of Cheshme Shoor Area, Qom, Iran

    Chemical Treatment Effects of Blue, Yellow and Green Colors with Heating Methods on Agates of Cheshme Shoor Area, Qom, Iran
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  3. 3
    The Observation of Internal Scattering of 633 Nm Red Laser Light in Aceh Natural Gemstones

    The Observation of Internal Scattering of 633 Nm Red Laser Light in Aceh Natural Gemstones

    The Observation of Internal Scattering of 633 Nm Red Laser Light in Aceh Natural Gemstones
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  4. 4
    Development of Nonresonant Elliptical Vibration Cutting Device Based on Parallel Piezoelectric Actuator

    Development of Nonresonant Elliptical Vibration Cutting Device Based on Parallel Piezoelectric Actuator

    Development of Nonresonant Elliptical Vibration Cutting Device Based on Parallel Piezoelectric Actuator
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  5. 5
    Cm̤o se hace un tallado de diamante

    Cm̤o se hace un tallado de diamante

    Cm̤o se hace un tallado de diamante
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  6. 6
    Talla de piedras preciosas

    Talla de piedras preciosas

    Talla de piedras preciosas
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  7. 7
    Talla irregular de cuarzo rosa

    Talla irregular de cuarzo rosa

    Talla irregular de cuarzo rosa
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  8. 8
    How to Cut and Polish Semi Precious Gemstone - Ribbonstone

    How to Cut and Polish Semi Precious Gemstone - Ribbonstone

    How to Cut and Polish Semi Precious Gemstone - Ribbonstone
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  9. 9
    Faceting of a 48 carat Shaver Lake Amethyst

    Faceting of a 48 carat Shaver Lake Amethyst

    Faceting of a 48 carat Shaver Lake Amethyst
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  10. 10
    Refaceting Blue Zircon

    Refaceting Blue Zircon

    Refaceting Blue Zircon
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