How to Identify Premium Cashmere: 6 Key Metrics

When you source cashmere for a fashion brand or textile mill, the difference between commodity fiber and premium fiber can mean 30–50% price gap on the finished garment. Use this checklist before signing any purchase order.

1. Fineness (Micron Count)

The single most important number. Measured in micrometers (μm).

• Baby Cashmere: ≤ 14.5 μm — top of the line, harvested from yearling goats
• Premium White: 14.5–15.5 μm — Albas white goat from Ordos, Inner Mongolia
• Standard White: 15.5–16.5 μm — most commercial cashmere
• Brown / Purple: 15.5–16.5 μm — natural color, lower price point

Anything above 16.5 μm is no longer classified as cashmere by international trade standards.

2. Fiber Length

Longer fibers spin into stronger, less pilling yarn.

• Premium: 34–42 mm
• Standard: 28–34 mm
• Short fiber (<28 mm): produces weaker yarn, more shedding

3. Dehaired Yield

The percentage of usable fiber after dehairing raw cashmere.

• Premium: ≥ 45%
• Standard: 35–45%
• Low (<35%): indicates poor raw material or excessive processing

4. Color & Whiteness

Premium white cashmere (Albas goat) has natural high whiteness — can be dyed into any pastel color with minimal bleaching. Brown and purple cashmere have natural dark tones, ideal for blends and dark colors.

5. Impurity Content

• Premium: ≤ 0.3% (vegetable matter, grease, dirt)
• Standard: 0.3–0.5%
• Above 0.5% means additional processing costs and lower yields

6. Crimp & Handle

Premium cashmere has tight, regular crimp and a soft “handle” (touch feel). Run a fiber through your fingers — premium fibers feel slippery, not rough.

How to Verify Before Ordering

1. Request a lab test report (fiber diameter, length, yield) from a SGS or Intertek lab
2. Ask for batch samples before placing bulk orders
3. Visit the factory or hire a third-party inspector (Asia Inspection, Bureau Veritas)

DONGXIAO® Cashmere provides full lab reports on every batch and welcomes factory audits at our Ordos facility. Contact our B2B team for sample requests.

Frequently asked questions about identifying premium cashmere

Buyers, sourcing teams, and brand founders trying to identify premium cashmere — not just marketing-claimed premium — typically ask the same set of questions. These quick answers cover the lab metrics and field tests that distinguish Grade A from Grade B and C fiber. For lab reports and audit access, request a cashmere sample kit.

What micron count defines premium cashmere?

Premium cashmere is defined by micron count of 14.0–15.5μm, with top-tier lots reaching 13.5–14.0μm. Cashmere goat fiber under 15.5μm is classified as Grade A; 15.5–16.5μm is Grade B; 16.5–19.0μm is Grade C. Each micron step matters: 14.5μm fiber feels noticeably softer against skin than 15.5μm fiber, and the price premium for sub-15μm lots is 20–40%. The micron count is measured by OFDA (Optical Fiber Diameter Analysis) on a representative sample of the dehaired top. Without an OFDA test report, a supplier’s “premium cashmere” claim is unverifiable — request the lab report from the current batch, not a generic spec sheet.

How can you tell real cashmere from fake without lab equipment?

Three field tests distinguish real cashmere from fake: (1) hand-feel test — real cashmere feels warm and slightly oily to the touch because of the natural lanolin coating; acrylic feels plasticky and cold; (2) burn test (off-cut only) — real cashmere burns slowly with a smell like burnt hair, leaves a brittle dark crushable ash; acrylic burns fast with a chemical smell and leaves a hard plastic bead; (3) water test — real cashmere absorbs water slowly (5–10 seconds to wet through), acrylic repels water. None of these alone is conclusive — combine all three with the burn test as the deciding factor. For B2B sourcing decisions, a proper lab OFDA test is always worth the USD 30–80 fee.

What is the dehaired yield and why does it matter?

Dehaired yield is the percentage of usable cashmere fiber remaining after coarse guard hairs are mechanically removed from the raw fleece. Premium cashmere has a dehaired yield of 70–80%, mid-tier 60–70%, entry 50–60%. The lower the yield, the more raw fiber the factory must buy to produce a kilogram of usable cashmere — directly affecting cost. A 60% yield fiber costs roughly 25% more per usable kilogram than a 75% yield fiber because you need 1.67 kg of raw fiber to produce 1 kg of dehaired top. Dehaired yield also correlates with hand-feel: high-yield fiber has finer average diameter because more of the coarse outer fibers are removed.

Does cashmere length matter for quality?

Yes — cashmere staple length directly affects pilling resistance and garment durability. Premium cashmere has a staple length of 36–42mm, mid-tier 30–36mm, entry-grade 24–30mm. Short fiber (<30mm) pills quickly because loose fiber ends escape the yarn twist during wear; long fiber (36mm+) pills less because more fiber is locked into the yarn structure. A 12-gauge pullover made from 38mm fiber will look near-new after 30 wear cycles, while the same garment made from 28mm fiber shows visible pilling under the arms after 10 wear cycles. Ask for the average staple length on the lab report alongside micron count.

What is baby cashmere and is it worth the premium?

Baby cashmere is the under-fiber harvested from cashmere goat kids (typically 3–12 months old) during their first combing. It is finer than adult cashmere — 13.0–14.0μm versus 14.5–15.5μm for premium adult Grade A — and noticeably softer. The premium is 2–4× over adult premium cashmere because baby goats yield only 30–80 grams of usable fiber per head versus 200–400 grams for adults, and the fiber cannot be harvested annually without harming the animal. Baby cashmere makes sense for luxury accessories (scarves, shawls, lightweight knits) where hand-feel is the deciding factor and price sensitivity is low. For everyday pullovers and cardigans, adult premium cashmere delivers 90% of the hand-feel at 30% of the cost.

Is Mongolian cashmere really better than Chinese cashmere?

Cashmere quality is determined by fiber grade, not national origin. The finest Mongolian cashmere (Alashan goats, 13.5–14.5μm) is exceptional, but so is Inner Mongolian cashmere from the Ordos plateau (14.0–15.0μm) — these are often the same goats on the same rangelands. The “Mongolia vs China” distinction is marketing more than fiber science. What matters is: (1) verified micron count from an OFDA test report, (2) dehaired yield above 70%, (3) staple length above 34mm, (4) documented fiber sourcing — direct from a named herding cooperative with traceability. A premium-grade fiber from any well-managed rangeland outperforms a lower-grade fiber from a famous region.