Delica Sizes and Product Codes

Understanding Delica sizes will help you follow a pattern, or design your own motif. Crafting your own Delica size samples will reveal to you the impact the size can make. Miyuki Delicas are precision-made cylinder seed beads with straight sides, large holes, and flat ends. That geometry is why they create such clean rows in peyote stitch, brick stitch, loomwork, and bead embroidery.

Delica Size Chart: Common Miyuki Sizes

Delica sizing follows the familiar seed bead system: the larger the number, the smaller the bead. A 15/0 Delica is smaller than an 11/0, while an 8/0 Delica is substantially larger. Measurements are approximate because bead finishes and manufacturing tolerances can make a small difference, but this chart is a dependable planning reference. (Miyuki does not make a size 6/0 in Delicas, although it does in it round or rocaille seed beads.)

| Delica size | Approx. diameter | Approx. length | Approx. hole size | Approx. beads per gram | Potential uses |
|---|---:|---:|---:|---:|---|
| 15/0 | 1.3 mm | 1.15 mm | 0.65 mm | 350 | Fine peyote, miniature motifs, detailed bead embroidery |
| 11/0 | 1.6 mm | 1.3 mm | 0.8 mm | 200 | Peyote, brick stitch, loomwork, jewelry patterns |
| 10/0 | 2.2 mm | 1.7 mm | 0.8-1.0 mm | 100 | Larger-scale patterns, embellishment, beginner-friendly stitching |
| 8/0 | 3.0 mm | 2.5 mm | 1.5 mm | 30 | Bold loomwork, stringing, fringe, mixed-media work |

Bead counts per gram are estimates, not a promise of an exact count. Color and finish can influence the weight, and while tiny, it adds up. When a pattern calls for a specific number of beads, buy by the required count when possible, then add a margin for sorting, thread tension adjustments, and accidental spills. BeadFX gives you an estimate of the bead count based on the weight for your reference, but the weights are based on averages.

What the Delica product codes tell you

Miyuki prefaces its product identification numbers with a lettering system, that reveals the type and size of bead, a number that indicates the color, and some have a letter suffix that adds information about the finish.

| Delica size | Prefix | Mnemonic |
|---|---:|---:|
| 11/0 | DB | The classic - DB - Delica Bead |
| 15/0 | DBS | Delica Bead SMALL |
| 10/0 | DBM | Delica Bead MEDIUM- slightly larger than the classic 11/0 |
| 8/0 | DBL | Delica Bead LARGE - the relative giant of the family |

We have preserved this information in our product codes, to make it easy for you to interpret and get the bead you are looking for. Do note, however that the original Miyuki numbering, while they now go up to four-digit numbers, traditionally started with 1, 2, 3, etc. When combined with their letter code, when entered into a spreadsheet or other software, numbering such as DB100, DB1000 then sorts before DB2, causing much confusion. For that reason, we and other savvy bead sellers "pad" the number with leading zeros - so that DB2 becomes DB0002 and sorts happily before DB0010.

A "C" in the name indicates "Cut" - facets that are cut into 3 sides of the beads, turning them into a hexagonal tube that brings a little reflective sparkle to your design, i.e, DBCM0501.

Product codes help you locate a replacement color or match a pattern supply list, but do remember to check whether the pattern calls for 11/0, 15/0, etc.

Color Number Consistency

Delicas, as with other beads, are not interchangeable across sizes, although, usefully their color numbers are consistent across Delicas, if not the other Miyuki beads, such as their round seed beads or Tilas.

Naturally, an 11/0 pattern worked in 15/0 Delicas will be noticeably smaller and more delicate. It will also demand a finer needle, lighter thread, stronger lighting, more beads, and somewhat more patience. A pattern worked in 8/0 instead of 11/0 becomes much larger, with a bolder grid and less capacity for tiny color transitions. This can be a great adaptation for a cuff, wall hanging, or costume detail, but it is not a direct substitute if the original design depends on fine detail.

For a rough scale comparison, an 11/0 Delica is the standard many contemporary peyote and loom patterns assume. It offers a useful balance of detail, availability, manageable handling, and broad color selection. Choose 15/0 when the design calls for miniature work or when you want a refined, high-density surface. Move up to 8/0 or 6/0 when you want the bead itself to be a visible design element.

Where Delicas shine is the capacity for texture and transition, keeping a consistent color across size elements. An embroidered bezel cabochon with size 11/0s and 15/0 naturally builds a cup around the cabochon to contain it and frame it.

Tubular Peyote and Cellini Spiral patterns also can revel in the size transitions.

Width and length calculations for loomwork

For flat loomwork, think of your beads as the "pixels" of your screen - each one making up a tiny part of the image. Divide intended finished width by the approximate bead diameter, then allow a little extra for the selvage, tension, and finishing method to get the number of columns. A 20-column pattern in 11/0 Delicas, for example, will measure roughly 32 mm across before finishing.

For length, multiply the number of rows by the bead length. This is only an estimate. Thread tension, pattern structure, and whether the piece is worn flat or curved all influence the final measurement. Make a short swatch before committing to a fitted bracelet or a component that must align with a metal finding.

Odd-count peyote, even-count peyote, and brick stitch also have their own edge behavior. The dimensions from a chart provide a starting point, while a swatch provides the answer for your specific thread, stitch, and tension.

Choosing the Right Bead for Your Technique

Delicas are especially valued in beadweaving because their flat ends nest together into a tidy, tile-like surface. The best size depends on the visual effect and the number of thread passes your design requires.

For peyote stitch and brick stitch, 11/0 is the dependable all-purpose choice. It suits detailed charted patterns, earrings, pendants, narrow bands, and bezels. A size 12 beading needle with a fine beading thread is often a comfortable starting combination, though the right needle depends on thread thickness and how many passes the pattern requires.

For loomwork, 11/0 Delicas create crisp graphic rows and are easy to source across a very broad range of colors and finishes. Use 15/0s for exceptionally detailed miniature imagery, provided your loom setup and warp material can support the finer scale. Use 8/0s when building a wider, faster-working band or a more graphic statement piece.

For bead embroidery, Delicas are excellent for narrow color blocks, geometric borders, and precisely packed areas. Their straight sides do make them less forgiving around tight curves than round seed beads. Many embroiderers combine Delicas with round seed beads: use Delicas where sharp lines matter, then use rounds, charlottes, or smaller accents to soften a curve or fill an irregular gap.

Hole size and thread-pass planning

A larger Delica does not always make every project easier. Larger holes allow more thread passes, but a larger bead may be too bulky for the structure you are building. Conversely, 15/0 Delicas give exquisite detail, yet their smaller holes can become crowded quickly with heavier thread or repeated reinforcing passes.

Before selecting thread, consider the smallest hole in the complete design, not just the Delica. A project may combine Delicas with crystals, pearls, bugles, or Czech glass that have more restrictive holes. Test your needle and thread through every component before beginning a large piece, especially if the pattern includes multiple passes through one bead.

Color Availability, Finishes, and Substitutions

Miyuki 11/0 Delicas generally offer the deepest color and finish selection. That makes them the practical choice when a pattern relies on subtle shading, several adjacent hues, or a specific finish such as matte, metallic, silver-lined, luster, or duracoat.

Smaller and larger Delica sizes may not be available in every 11/0 color. Or, the exact color you are looking for may be out of stock. Don't hesitate to ask when it might be restocked. We might be able to get it the next day!

Do not mix Delicas and round seed beads in the same counted grid unless you intend to create texture. Even if both are labeled 11/0, a round seed bead has a different diameter, length, and spacing behavior. It can interrupt the clean alignment Delicas are known for. Mixing is useful for intentional texture, fringe transitions, or embroidery details, but less suitable for a smooth patterned panel.

When ordering materials for a repeating motif, purchase enough of each color from the start. Dye lots and finish variations can occur, and a replacement bead may not match an earlier purchase exactly. For production work, label leftover beads with the manufacturer color number and keep each color in a separate container.

A size chart gets you close, but a small stitched sample gets you confident. Match the Delica size to the pattern grid, test your thread passes, and let the scale of the bead support the detail you want your finished work to show.