Machine-cut stones are cut on automated equipment to the same shape, size and facet pattern every time. Hand-cut stones are shaped by a cutter, so each one differs slightly in size, angle and finish.
Machine cutting gives brilliance and consistency, which matters for CZ and crystal glass. Hand cutting gives character and is common in traditional styles such as polki and some kundan work.
Machine-cut stones
- Sizes are calibrated in millimetres, so stones drop straight into cast or stamped settings.
- Facets are sharp and symmetrical, which gives strong sparkle.
- Every stone in a lot matches, which matters for long lines of stones in necklaces and bracelets.
- Setting is faster and cheaper, since less adjustment is needed.
Hand-cut stones
- Sizes and shapes vary slightly, so settings are often adjusted by hand.
- Facets are softer or irregular, which some styles want, such as the flat, uncut look of polki.
- Matching across a large order is harder, and colour can also vary.
- Setting takes longer and costs more.
Which to choose
For American diamond (CZ) jewellery, Western designs and anything where sparkle sells, specify machine-cut calibrated stones. They make bulk orders consistent and cut down on loose stones caused by poor fit.
For traditional and artisan styles, hand-cut stones may be the right look. Accept that the bulk lot will vary slightly, and approve a sample that shows the realistic range rather than the best piece.
How to tell them apart
- Look at several stones side by side under a loupe. Machine-cut stones look identical; hand-cut ones do not.
- Check facet edges. Machine-cut edges meet cleanly at points.
- Measure a few stones. Calibrated stones hit the stated size within a small tolerance.
- Ask the maker where they buy stones, since most workshops buy rather than cut them.
What this means for a buyer
Specify the cut, size in millimetres and grade on the order, and check them on the bulk lot. The purchase order checklist shows where stone details belong.
Creston & Co works for buyers only, for a fixed fee agreed in writing. We check stones and setting against your approved sample in Rajkot and supervise packing. Start with a free sourcing review.