Diamond Deco Tunic in Sirdar No.1 - 10666 - Downloadable PDF

Diamond Deco Tunic in Sirdar No.1 – Pattern 10666: A Detailed Summary

This intermediate-level knitting pattern, design number 10666 from Sirdar, presents the Diamond Deco Tunic — a stylish, wearable garment knitted in Sirdar No.1 Double Knitting yarn. The pattern is available as a downloadable PDF and has been triple-checked by Sirdar to guarantee a successful result when worked with the recommended yarn.

What Is Being Made

The Diamond Deco Tunic is a tunic-length vest cardigan, designed to be a versatile layering piece suitable for warmer weather. The pattern covers a wide range of sizes, from 81 cm to 137 cm (approximately 32 to 54 inches), making it accessible to a broad range of knitters in terms of fit. The tunic silhouette gives the garment a relaxed, elegant drape that works well as a standalone top or as a layering piece over other garments.

Design Details and Style

As the name suggests, the Diamond Deco design features a geometric diamond motif that gives the tunic a structured, art deco-inspired aesthetic. This type of stitch pattern creates visual interest across the body of the garment without requiring complex colourwork, instead relying on the interplay of knit and purl stitches or lace-style construction to produce the diamond shapes. The result is a garment that looks intricate but is achievable for an intermediate knitter willing to follow a multi-row repeat.

Techniques Used

• Flat knitting — the garment panels are worked flat and seamed together, a classic construction method well-suited to structured tunic shapes
• Geometric stitch patterning — the diamond deco motif is worked across the fabric using a repeating stitch sequence, requiring careful attention to row counts and pattern placement
• Shaping — intermediate-level shaping techniques are used to form the armholes, neckline, and overall silhouette of the tunic vest cardigan
• Seaming — finished panels are joined using standard seaming methods, a core skill for garment knitting

Stitches Used

• Knit and purl combinations — the foundation of the diamond deco texture, creating raised and recessed areas that form the geometric pattern
• Ribbing or moss stitch — typically used at hems, cuffs, and necklines in garments of this style to provide neat, stable edges
• Stocking stitch — likely used in plain sections to balance and frame the decorative diamond motif panels

Yarn and Materials

The pattern is designed specifically for Sirdar No.1 Double Knitting, a DK weight yarn that is described as a double knitting crepe with a gentle sheen and soft, silky feel. Established in West Yorkshire in 1880, Sirdar is one of Britain's most heritage-rich yarn companies, and Sirdar No.1 is considered a classic in their range — particularly popular for warmer-weather knitting projects due to its lightweight, breathable character.

• Yarn: Sirdar No.1 Double Knitting, used in shades 242 and 217
• Weight: Double Knitting (DK)
• Needle type: Standard knitting needles appropriate for DK weight yarn (specific size stated within the full PDF pattern)

Who Is This Pattern For

Rated as intermediate in difficulty, the Diamond Deco Tunic pattern is ideal for knitters who have moved beyond basic scarves and simple sweaters and are comfortable working multi-row stitch repeats and basic garment shaping. The wide size range — from 32 to 54 inches — means this pattern is genuinely inclusive, offering options for a diverse range of body sizes. The use of Sirdar No.1 Double Knitting ensures a smooth, consistent fabric that shows off the diamond stitch detail