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Gemstone Grinding Process Improvement by Using Impedance Force Control

Gemstone Grinding Process Improvement by Using Impedance Force Control

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

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

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

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

Cm̤o se hace un tallado de diamante

Cm̤o se hace un tallado de diamante

Talla de piedras preciosas

Talla de piedras preciosas

Talla irregular de cuarzo rosa

Talla irregular de cuarzo rosa

How to Cut and Polish Semi Precious Gemstone - Ribbonstone

How to Cut and Polish Semi Precious Gemstone - Ribbonstone

Faceting of a 48 carat Shaver Lake Amethyst

Faceting of a 48 carat Shaver Lake Amethyst

Refaceting Blue Zircon

Refaceting Blue Zircon