Master the Art of Gem Cutting – Learn 5 Styles in One Studio
Learn gem cutting like never before — from traditional hand techniques to precision machine faceting.
Our studio offers the only personalized gem-cutting courses in Thailand where you can explore 5 unique cutting styles, with options to suit every schedule.
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Course Options:
Full Course – Learn All 5 Styles – 40,000 THB | 12 Days | 3 hrs/day
• Thai Freehand Cutting
• Jambpeg Traditional Cutting
• Sri Lankan Handpiece Cutting
• Precision Faceting (Facetron Machine)
• Cabochon Cutting
Only 1–2 students per session
Includes tools, and rough stones
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Short Classes (You Choose the Style)
1-Day Class – 3,500 THB | 6 hours (or 2 sessions of 3 hrs)
Choose one style:
• Jambpeg
• Handpiece (Sri Lankan style)
• Precision Faceting (Facetron)
Includes one faceted stone to take home
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Cabochon Cutting Class – 2,000 THB | 1 Day | 2 Hours
• Learn how to shape and polish a domed cabochon
• Ideal for beginners and jewelry makers
• Take home your finished cabochon
Cutting Styles We Teach
At GM Cut Studio, students are trained in five essential cutting styles, covering both modern precision and traditional freehand methods. This gives you a complete understanding of the techniques used in real gem industries around the world.
Cabochon Cutting
• Shaping and polishing smooth, rounded stones without facets.
• Focus on achieving perfect domes, symmetry, and a high-polish surface.
• Used for stones like opal, star sapphire, turquoise, and materials where color, pattern, and light effects (like asterism) are more important than sparkle.
• Ideal for beginners and for learning stone shaping before moving to faceting.
Jambpeg
Using a simple horizontal lap and wooden dop stick (no mast, no index).
• Angles are controlled by eye and slight hand movement, inserting the stick into holes on the jambpeg board.
• An ancient, heritage method still practiced in Sri Lanka and parts of India.
• Trains fine motor control, angle sensitivity, and an understanding of traditional craftsmanship.
Handpiece Faceting Machine (with Index Gear)
Using a mast-type faceting machine with angle and height controls.
• Focuses on perfect symmetry, repeatability, and clean facet junctions.
• Common for competition cuts, high-end jewelry stones, and calibrated shapes like round brilliant and emerald cut.
• Teaches precise control over angles, meet points, and brilliance optimization.
Precision Faceting Machine (Facetron)
Using a mast-type faceting machine with digital angle and height controls.
• Focuses on perfect symmetry, repeatability, and clean facet junctions.
• Common for competition cuts, high-end jewelry stones, and calibrated shapes like round brilliant and emerald cut.
• Teaches precise control over angles, meet points, and brilliance optimization.
Freehand Cutting Style
LTrue Thai traditional method — no index, no angle guides.
• The cutter manually controls all angles by skill and visual judgment.
• This is the real method used for cutting rubies and sapphires (corundum) in Thailand — even for valuable stones.
• Teaches you how to maximize yield from rough stones, adapt to inclusions, and cut quickly and intuitively like professional Thai cutters.