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This GRS® Alexandre stone setter's package comes with everything you need to set stones like a pro.

GRS® Alexandre Stone Setter's Ring Fixture
Designed by renowned diamond-setter Alexandre Sidorov, the GRS® Alexandre ring fixture system allows you to precisely position rings and offers incredible accessibility to your work so you can set stones like a pro. The components of the system are based on years of experience setting stones and teaching his skills to other jewelers.
• A pair of bell-shaped jaw attachments designed enhance the function of the vertical and horizontal drawbars.
• Two drawbar sizes accommodate rings of almost any width.
• The vertical ring holder features a spherical base that permits multi-axis movement for superior access to the surfaces you are working on.
• The fixture also includes two full 10-piece expanding mandrel sets organized in a high-quality aluminum tray.

GRS® MicroBlock
The GRS® MicroBlock® allows you to access your piece from almost any angle. The smooth self-centering jaw system (2-1/4”, 57.1mm max. opening) is great for detailed engraving and stone setting. An internal brake system ensures a strong, steady grip. The vise is machined from solid stainless steel and finished with a special low-glare treatment to reduce eye strain. Includes four pins, a bases, two Allen wrenches, and six screws.

Microscopic Work
A low profile makes the MicroBlock® ideal for exacting tasks with the aid of a microscope. The vise configuration provides stability for your work and allows quick and easy positioning adjustment of your piece without changing the alignment of the microscope or its field of view. You can even adjust it without taking your eyes from the microscope.

  • Brand : GRS
  • Model or style no. : 003-783
  • Country of origin : United States
Additional Specifications:
  • Block weight: 4.3 lbs (1.8kg)
    Ball diameter: 1-1/2" (39.1mm)
    Jaw width: 1-3/4" (45.34mm)
    Jaw height: 7/8"(22.4mm)
    Max. jaw opening: 2-1/4" (57.1mm)

Please Note: • This system is designed for use only with a GRS Microblock and cannot be used with the GRS standard block.

Catalog page: 2020-2021 Tools and Equipment Catalog p. 337
Kit set includes:
  • GRS® MicroBlock
    GRS® Alexandre Stone Setter's Ring Fixture (118139):
    —Two 10-piece expanding mandrel sets, 13.5–22.5mm
    —Two bell-shaped jaw attachments
    —Short horizontal drawbar
    —Long horizontal draw bar
    —Vertical drawbar
    —Plastic standard cone
    —Plastic locking cone
    —Steel double-sided cone
    —Steel cone cover
    —Six button head cap screws
    —Countersunk screw