About us
At GM Cut Studio, we specialize in teaching the timeless craft of gem cutting to students from around the world. Located in the heart of Bangkok’s gem district, our school offers both a comprehensive 12-day course and a 1-day class — perfect for travelers or beginners who want to experience gem cutting for the first time.
Our hands-on courses cover multiple styles, including Thai traditional, Jambpeg, Precision, and Handpiece techniques. Each session is guided by an experienced instructor who has worked with leading gemological institutions and brings a deep understanding of both technique and artistry.
Whether you’re looking to build a career, start a new hobby, or simply try something unforgettable while visiting Bangkok, GM Cut Studio is the place to begin your journey.
Taught in English. No experience needed. All materials provided.
Discover the brilliance within every stone.
Machines & Techniques We Teach
At GM Cut Studio, we teach you how to use real gem cutting machines and techniques used by professionals in the industry. You’ll get hands-on experience with both precision systems and traditional tools — just like those used in gem factories across Asia.
Cabochon Machine
Used for cutting and polishing smooth, domed stones without facets.
Perfect for: Opals, star stones, turquoise, or any stone where color and shape matter more than sparkle.
Jambpeg
An ancient faceting method using a horizontal lap and a wooden stick (dop).
Perfect for: Learning gem cutting history, developing manual skill, and understanding angle control by eye.
Handpiece Faceting Machine (with Index Gear)
A machine using a handpiece connected to an index gear.
Perfect for: Controlled manual cutting with faster adjustments and a more natural feel than mast machines.
Precision Faceting Machine (Facetron)
A modern mast machine with digital angle and height control.
Perfect for: High-precision cutting, ideal symmetry, and repeatability.
Freehand Cutting Style
This is the traditional Thai cutting method, used widely in real gem factories. The stone is held and rotated by hand, with no angle dial or index gear — relying solely on the cutter’s eyes, hands, and experience.
Perfect for: Fast production, adapting to inclusions, and maximizing yield from rough stones.
Inside Our Studio
Our studio is designed to provide a focused, hands-on learning experience in a clean, professional, and inspiring environment. Whether you’re practicing precision cuts or exploring freehand techniques, you’ll be surrounded by the tools, machines, and atmosphere used in the real gem industry.
INSTRUCTOR
All classes at GM Cut Studio are taught by Patharaphum Sudprasert (Poom), an experienced gem cutter and gemology instructor, specializing in real-world cutting techniques.
Patharaphum Sudprasert (Poom)
InsTRUCTOR
Why Choose Us
Real Industry Machines
We use the same gem cutting machines that are used in real gem factories — giving you practical, real-world skills.
Learn Multiple Techniques
Train on different types of machines and understand the pros and cons of each style, from precision faceting to traditional freehand cutting.
Small Class Size
We keep our classes small to make sure every student gets personal, hands-on attention and detailed feedback.
How to apply
How to Apply
1. Choose Your Start Date:
We usually teach Monday to Saturday, from 3:00 PM to 6:00 PM.
(Closed on Sunday.)
2. Contact Us:
Send us a message to check available dates and reserve your spot.
3. Confirm Your Booking:
Once we agree on the date, we’ll confirm your class and prepare everything for you!
It’s simple — just pick a day that works for both of us and text me!
Contact us
BIS Building Phase 2 room 3E6, 119 Mehesak Road, Suriya Wong Sub-Districts, Bangrak District, Bangkok 10500.