Cashmere earns its reputation in the first touch, but the real difference reveals itself over time. A beautifully made scarf should retain its softness through seasons of wear; a favourite sweater should feel refined rather than thin after a few outings. This guide to cashmere fibre grades explains what sits behind those expectations, and which details are genuinely worth considering before you buy.
What cashmere fibre grades really mean
Cashmere comes from the exceptionally fine undercoat of cashmere goats. Each spring, this soft down is collected, then separated from the coarser outer guard hairs, cleaned, spun and knitted. The quality of the finished piece depends on every stage, but fibre fineness and fibre length are the two starting points.
You may see cashmere described as Grade A, B or C. These labels are widely used in retail, yet they are not a universal, independently regulated grading system. A Grade A claim commonly refers to very fine fibres, often around 14 to 15.5 microns in diameter, with a longer staple length. Grade B and Grade C are often used for slightly coarser or shorter fibres, but the precise thresholds can vary between suppliers.
Treat letter grades as a helpful indication, not a complete guarantee. A retailer that only presents a letter without information about composition, construction or provenance is giving you only part of the picture. The most useful question is not simply, “What grade is it?” but, “How has this fibre been selected, spun and made into a garment?”
A guide to cashmere fibre grades: begin with microns
A micron is one millionth of a metre and is used to measure fibre diameter. In cashmere, a lower micron figure generally means a finer fibre and a softer handle. Fine cashmere commonly falls between roughly 14 and 19 microns, while the finest selections sit at the lower end of that range.
Fineness matters because it affects how a fibre feels against the skin. Coarser fibres can feel more prickly, particularly at the neck or wrists, whereas fine cashmere has the light, cloud-soft quality people expect from a luxury yarn. For accessories such as scarves, wraps and hats, this distinction is immediately noticeable.
However, the lowest number is not automatically the best purchase. Extremely fine fibre needs expert spinning and considered knitting to deliver strength as well as softness. A garment made from fine cashmere with a loose, fragile construction may wear less well than a slightly more substantial knit made with excellent long-staple fibre. The pleasure lies in the balance: softness, resilience, warmth and shape retention working together.
Fibre length is the quieter sign of quality
Staple length refers to the length of each individual cashmere fibre. Longer fibres can be spun into smoother, stronger yarns because there are fewer loose ends protruding from the yarn surface. This generally helps reduce pilling and gives knitwear a cleaner, more polished finish.
Shorter fibres are not inherently poor, but they are more likely to work free with friction. That can create the familiar small bobbles on areas such as underarms, cuffs and the sides of a sweater. Some initial pilling is natural with any cashmere, especially in the first wears, as short loose fibres find their way out. Persistent or heavy pilling, though, can point to shorter fibre, less careful yarn preparation or a very loose knit.
Fibre length is rarely printed on a label, which is why touch and construction matter. Look for an even surface with a gentle bloom rather than a fluffy, over-brushed finish. Cashmere should feel soft and inviting, but it should also have a degree of spring when lightly pressed between your fingers.
Why yarn and knitting construction matter as much as grade
Cashmere fibre does not become luxurious by itself. Spinning determines how evenly the fibres are held together, while knitting determines the garment’s drape, density and longevity. A thoughtfully made two-ply cashmere yarn is often valued for its strength and richer feel, but ply alone is not a shortcut to quality.
A two-ply yarn simply means two strands have been twisted together. It can create a more durable yarn than a single ply, yet yarn thickness varies greatly. Two very fine strands may produce a light, elegant layer; thicker strands can make a warmer, more substantial piece. The gauge of the knit - how closely the stitches are formed - also changes the final result.
For a fine, versatile sweater, a lighter gauge can offer beautiful drape and easy layering. For a scarf, poncho or cold-weather hat, a denser knit may give greater warmth and structure. Neither is categorically superior. Choose according to how and where you will wear it.
Weight deserves the same sensible perspective. A heavier cashmere garment may feel generous and warm, but weight can also be created by bulk rather than exceptional yarn. A lightweight piece made from fine, well-spun cashmere can be remarkably warm because cashmere fibres naturally hold insulating air close to the body.
How to read a cashmere label with confidence
The clearest starting point is composition. For the pure cashmere experience, look for a label stating 100% cashmere. Blends can have a purpose - for example, combining cashmere with merino or silk can alter durability, texture or drape - but they should be chosen for that specific character, not mistaken for pure cashmere.
Then consider where and how the piece has been made. Knitting expertise shows in neat seams, stable ribbing, balanced shaping and a finish that feels considered from edge to edge. Irish-made knitwear carries a particular strength here: a long tradition of working with natural yarns, coupled with the close attention that comes from specialist production.
Colour is a matter of style, not fibre grade. Undyed white, beige and brown cashmere may require less processing, while richly coloured cashmere can be equally beautiful when dyed and finished with care. What matters is an even tone, a soft handle and a yarn that has not been over-processed in pursuit of artificial shine or excessive fluffiness.
When shopping online, product details should help you understand the piece rather than rely on broad superlatives. Fibre composition, country of manufacture, garment shape and care guidance are all more useful than an unexplained claim of “premium” cashmere. At Ekotree, the focus is on natural yarns, refined colour and Irish knitwear made to become part of everyday dressing, not a one-season novelty.
Care protects the grade you have chosen
Even excellent cashmere benefits from a little restraint. Avoid wearing the same piece on consecutive days where possible, as resting allows the fibres to recover their shape. Fold rather than hang sweaters and accessories, since hanging can stretch the shoulders or distort the knit over time.
Wash only when needed, using cool water and a specialist wool wash, then press out moisture gently without wringing. Dry flat, away from direct heat. A cashmere comb can remove light pilling carefully, but never pull bobbles away by hand. For summer storage, ensure each piece is clean and fully dry before placing it in a breathable bag or storage box with moth protection.
The best cashmere does not need to announce itself with a grade alone. Choose a piece that feels balanced in the hand, is transparent about its fibre content and making, and suits the way you live. With considered wear and care, fine cashmere becomes softer, more familiar and more personal with every season.
