Choosing a stone setting is one of the first decisions in any custom jewelry project, and it shapes how the CAD model is built, how the wax prints, how the piece casts, and how much bench work follows. At eCadCam in Glendale, we model jewelry stone settings every week for designers, retailers, and private clients across Los Angeles. Here is how the four most common jewelry stone setting styles work, what they look like in CAD, and what to consider before modeling starts.
Why stone setting style matters in jewelry CAD
In CAD, the seat for each stone is cut to the exact dimensions of the gem, the metal that holds it is sized for the alloy you plan to cast, and the whole geometry has to survive wax printing, burnout, and casting shrinkage. A setting with prongs too thin to cast, or a bezel wall with no room for the setter to push metal, creates rework. Getting the setting style right at the CAD stage is what lets a piece move smoothly through our jewelry services workflow from model to finished casting.
What we need from you before modeling a setting
For any setting, we need the stone’s exact measurements (length, width, and depth in millimeters, not just carat weight), the shape and cut, and the metal you intend to cast in. If the stone is already in hand, we can measure it or 3D scan it. If it is still being sourced, give us a target size and we will build the seat with a small tolerance so the setter has room to adjust.
Prong settings: maximum light, minimum metal
The prong setting is the classic choice for engagement rings and solitaires. Four or six metal claws rise from the head, bend over the crown of the stone, and hold it with minimal coverage, so light enters from every side.
In CAD, we model prongs as tapered posts with a seat cut at the stone’s girdle. Prong thickness depends on the metal: platinum and 14k gold prongs can be modeled thinner than silver because they hold their shape better under wear. We add a little extra material at the tips so the setter has metal to work with. Prongs are also the easiest setting to resize and repair later, though they can catch on clothing and wear down over time.
Bezel settings: protection and a modern look
A bezel setting wraps a thin band of metal completely around the stone’s girdle. It is the most secure of the common setting styles and the best choice for active wearers, for softer stones like opal or emerald, and for clean, contemporary designs.
In CAD, a bezel is modeled as a continuous wall with an internal seat that holds the stone at the right height. Wall thickness has to be tuned carefully: too thin and it will crack when the setter pushes it over the stone; too thick and it looks heavy and hides the stone’s edge. A partial or “half bezel” leaves two sides open for a lighter look, and a bezel can follow any outline, which makes it ideal for freeform stones traced from a photo or 3D scan.
Pavé settings: fields of small stones
Pavé (from the French for “paved”) covers a surface with many small stones set close together, held by tiny beads of metal raised between them. It is what gives a band, a halo, or a pendant its all-over sparkle.
Pavé is where jewelry CAD really earns its keep. In CAD we can distribute stones evenly along a curve, cut each seat to the same depth, and place the bead positions in one pass. The critical details are stone spacing, consistent seat depth so every table sits at the same height, and enough metal under the stones to hold them once the beads are raised. Micro-pavé with stones under 1.5 mm needs higher-resolution printing and an experienced setter.
Channel settings: stones in a row, no beads
A channel setting places a line of stones between two parallel walls of metal, with no prongs or beads between them. It is the standard choice for wedding bands, eternity bands, and accent rows on engagement rings, because the smooth surface does not snag and the stones are well protected.
In CAD, we model the channel as a slot with a rail on each side and a seat for each stone. Stones must be closely matched in size for the row to look even, so we ask for actual stone sizes before modeling, or spec a calibrated size for you to source. The walls need enough thickness to cast reliably and to hold the stones after the setter closes them.
How setting choice affects cost and timeline
Setting style affects the cost of a custom piece in two ways: modeling time and bench time. A simple four-prong solitaire is fast to model and fast to set; a micro-pavé halo with sixty stones takes longer in CAD and considerably longer at the setter’s bench. As a general guide, prong and bezel settings are the most economical, channel settings are moderate, and pavé is the most labor-intensive. We will always tell you up front if a design choice will move the budget or the timeline.
Start your custom setting with eCadCam in Los Angeles
Whether you are designing a single engagement ring or a small production line, we can model the setting, print the wax, and cast the piece under one roof at our Glendale studio. Send us your stone measurements and a sketch or reference photo, and we will recommend the right setting style and turn around a quote. Request a quote from eCadCam in Los Angeles today, or call us at 213.489.1173.