A smooth dome and a set of small, flat faces give a gemstone different ways to catch the light. The dome is characteristic of a cabochon; the flat faces are facets. Either can make a beautiful piece, but they create different things to look at.
Look at the surface, not just the outline
A simple cabochon has a rounded top and a flat base. Double cabochons have rounded surfaces on both sides. A faceted gemstone carries a series of flat, polished planes. “Oval” or “round” describes the outline; either outline can have a domed or faceted surface.
A smooth round bead is another form. Its rounded surface does not automatically make it a cabochon. In bracelet descriptions, look for both the bead shape and the surface finish.
What changes when the stone moves?
| Surface | What to notice |
|---|---|
| Smooth dome | A highlight can travel across the curve, leaving room to see color, banding or other features. |
| Flat facets | Different faces brighten and darken as their angle to the light changes, giving the surface a more broken pattern of reflections. |
In a transparent gemstone, light can also travel inside the stone and return through its facets. The angles and arrangement influence what you see. On an opaque stone, facets can add surface reflections without making the material see-through.
Some gemstones have a moving eye or star that a suitably oriented dome helps reveal. That is a specific optical effect, not something every polished dome will display.
Facets on turquoise: a bracelet example
JAMBHALA’s KUN bracelet uses 7.5 mm faceted turquoise beads with darkened metal spacers. Here, the small planes divide the blue surface into changing patches of light. Look for that surface rhythm rather than expecting the see-through sparkle of a transparent gem.
When comparing it with another bracelet, use similar lighting and bead scale. A larger close-up or a stronger spotlight can make the difference look greater than it is.
Compare the views you will actually wear
Ask for a straight-on view and a side view: the first shows the outline and surface pattern, while the second reveals dome height or projecting corners. A short video under ordinary light can show how highlights change as the piece turns.
Choose by the effect you enjoy—an uninterrupted curve, distinct flashes across flat planes, or a particular moving optical feature. Then check the material, dimensions and setting separately. The cut name describes the form; those other details tell you how it works in the finished jewelry.
