Many of the best pieces we make start as a napkin sketch, a screenshot saved from Instagram, or a photo of a grandmother’s ring. Turning custom jewelry from a sketch or photo into a finished, wearable piece is exactly what jewelry CAD is for, but the quality of what you send at the start has a big effect on how fast the project moves and how many revision rounds it takes. Here is what to gather before you contact a jewelry CAD designer, and how we turn that material into a model ready for wax printing and casting.
How Custom Jewelry from a Sketch Becomes a 3D Model
A sketch or photo is a starting point, not a blueprint. A drawing shows the look of a piece from one angle; a CAD model has to define every surface in three dimensions, down to fractions of a millimeter. Our designers read your reference, fill in the parts the image cannot show (the underside of a setting, the inside of a shank, the back of a pendant), and build a digital model that can actually be cast in metal.
What to Send Your Jewelry CAD Designer
1. Your sketch or reference images
Send everything you have, even rough drawings. If possible, include several views: top, side, and profile. For photos of existing jewelry, shoot in good light against a plain background, and include a coin or ruler in the frame so we can judge scale. If you are combining ideas, such as the halo from one ring and the band from another, label each image so it is clear which feature you want from which.
2. Dimensions and sizing
Ring size is essential for rings. For pendants, earrings, and bracelets, give approximate overall dimensions in millimeters or inches. If you are not sure of a ring size, a local jeweler can size you in a few minutes, and it is much easier to get right before modeling than to change after casting.
3. Metal choice
Tell us whether the piece will be cast in silver, gold (and which karat and color), or platinum. Metal affects weight, cost, and in some cases minimum thicknesses, so it shapes the model from the start. If you are still deciding, we can estimate metal weight from the CAD model for each option.
4. Stone details
List every stone: shape, size in millimeters (or carat weight), and whether you already own it. If you are supplying a center stone, its exact measured dimensions are far more useful than the carat weight alone, since two stones of the same weight can differ in proportions. Note the setting style you want, such as prongs, bezel, or pavé.
5. Must-haves vs. flexible details
Tell us which elements are non-negotiable and where you are open to suggestions. Often a detail that looks great in a drawing is too thin to cast reliably or would catch on clothing. Knowing your priorities lets us adjust the right things without losing what you care about.
6. Budget and deadline
A budget range helps us recommend the right metal, stone layout, and level of detail. If the piece is for an engagement, anniversary, or event, share the date so we can plan the CAD, approval, printing, and casting steps backward from it.
What Happens After You Send Your Sketch
Once we have your references, a typical jewelry CAD project at our Glendale studio follows these steps:
- Review and quote: we look over your images and notes, ask about anything unclear, and quote the CAD work along with any wax printing or casting.
- CAD modeling: our designers build the piece to your size, metal, and stone specifications, keeping casting requirements like wall thickness and prong strength in mind.
- Renders for approval: you receive photorealistic renders from several angles so you can check proportions and details before anything is made.
- Revisions: we refine the model based on your feedback. Clear references up front usually mean fewer rounds here.
- Optional fit prototype: for rings especially, a 3D-printed resin model lets you try the size and scale on your hand before committing to metal.
- Wax or castable resin printing and casting: the approved model is printed and cast in your chosen metal using lost-wax casting.
Common Mistakes When Starting Custom Jewelry from a Photo
- Only one angle: a front-facing photo hides the profile and underside, which are often where the design work is.
- No scale reference: without a size cue, a delicate pendant can be modeled far too large or too small.
- Unmeasured stones: designing around an estimated stone and then receiving one with different dimensions can force a setting redesign.
- Copying a branded design exactly: we are happy to take inspiration from styles you love, but we create original designs rather than duplicating another designer’s protected work.
Bring Your Jewelry Idea to Life in Los Angeles
With more than 22 years of experience in CAD and fabrication, eCadCam turns sketches, photos, and ideas into cast-ready jewelry for individual clients, jewelers, and small brands. Learn more about our jewelry CAD, wax printing, and casting services, or send us your sketch for a quote. Visit us at 4212 San Fernando Rd, Glendale, CA 91204, or call 213.489.1173 to get started.