Quick Answer: How is 100% Grade 6A mulberry silk made? Silk production follows a 6-stage biological journey: 1) Mulberry Cultivation (growing nutrient-rich Morus alba leaves); 2) Silkworm Rearing (Bombyx mori caterpillars feed for ~28 days); 3) Cocoon Spinning (each caterpillar spins a continuous 600–900m protein filament over 3 days); 4) Reeling (缫丝) (softening cocoons in hot water and combining 4–8 unbroken filaments into yarn); 5) Grading (the top 3% cleanest, longest threads earn Grade 6A); and 6) Weaving & Hand-Rolling into luxurious scarves (explore our detailed guides on what Grade 6A silk means and hand-rolled vs machine hems).
Hold a silk scarf up to the light and it looks impossibly delicate — but behind that lightness is one of the most labor-intensive artisan processes in the textile world. It begins on a tree: a mulberry leaf eaten by a silkworm that spins a single continuous thread, which human hands unravel, grade, and weave. This is the complete journey of mulberry silk production from leaf to Grade 6A yarn.
Silk Production by the Numbers: Biological Facts
| Production Metric | Artisan / Biological Specification |
|---|---|
| Feeding Period (Larval Stage) | ~28 days of continuous feeding with 4 molts (5 instars) |
| Cocoon Spinning Duration | ~2–3 days of uninterrupted figure-8 head spinning |
| Single Cocoon Filament Length | 600–900+ meters of unbroken continuous filament |
| Cocoons Required for 1 kg Raw Silk | Approximately 5,000 intact cocoons |
| Cocoon-to-Silk Yield Ratio | ~12 kg fresh harvested cocoons yields 1 kg reeled silk |
The 6 Stages of Grade 6A Mulberry Silk Production
Stage 1 — Mulberry Cultivation: In the Taihu Lake basin near Suzhou, nutrient-dense white mulberry leaves are harvested fresh daily (read our Suzhou silk heritage story).
Stage 2 — Controlled Silkworm Rearing: Bombyx mori caterpillars feed continuously indoors under strict temperature and humidity control, producing uniform white filaments.
Stage 3 — Cocoon Formation & Sorting: Caterpillars spin continuous fibroin protein filaments sealed by natural sericin gum.
Stage 4 — Precision Reeling: Cocoons are softened in hot water to release the sericin, and 4 to 8 continuous filaments are combined into a single smooth yarn running kilometers without knots.
Stage 5 — Scientific Grading: Graded on cleanliness, neatness, and elongation. Only the top 3% harvest qualifies as Grade 6A (complete 6A buyer's guide).
Stage 6 — Weaving & Hand-Rolling: Woven into 14–18 momme charmeuse or twill and finished with hand-rolled hems (hand-rolled hem vs machine hem).
SERISILK: Certified 100% Grade 6A Mulberry Silk
Every SERISILK piece is woven exclusively from long-fiber Grade 6A Suzhou mulberry silk with master hand-rolled edges:
- Everyday Squares (65cm Petite): 65cm Petite Silk Square Scarf – Crisp hand-rolled hems and pearlescent luster. $28–$35.
- Statement Carré (90cm): Mulberry Silk Square Scarf – Luxuriously rich drape for blazers and coats.
- Fluid Silk Long Scarves (170cm–180cm): Solid Silk Long Scarf & Printed Silk Long Scarf – Flowing drape and breathable comfort.
Feel the difference of unbroken long-filament mulberry silk against your skin.
Ready to experience authentic Grade 6A silk?
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