Vicuña

Vicuñas are wild relatives of llamas and alpacas, native to the Peruvian highlands. They are shorn only once every three years and produce only 200-500 grams of fiber per animal per shearing. International convention (CITES) limits the harvest and export to protect the vicuña population, which was endangered in the 20th century. The combination of low fiber yield per animal, infrequent shearing, and protected status makes vicuña the rarest natural fiber commercially available.

Fiber diameter — vicuña fiber is the finest in the natural-fiber world (typically 10-12 microns vs. 14 microns for baby cashmere and 15-19 microns for adult cashmere). Hand — distinguishably softer than baby cashmere, the softest natural fiber against skin. Warmth — denser warmth than alpaca, comparable to baby cashmere in insulation. Rarity and price — vicuña sits at a price point significantly above baby cashmere, reflecting the extreme rarity.

Best for shoppers who already own multiple cashmere and baby-cashmere sweaters and want the peak of the natural-fiber knit hierarchy. Special occasions, milestone gifts, collector pieces, and shoppers who value the rarest natural fibers as long-term investment pieces. Most shoppers will never buy vicuña; for those who do, it's typically a once-in-a-lifetime piece worn rarely and cared for carefully.

With extreme care given the value and rarity. Hand wash with the gentlest possible care using a specialty wool/cashmere detergent — or send to a professional cashmere/vicuña specialist for cleaning. Lay flat to dry on a clean towel, never hang wet, never tumble dry. Store folded with cedar in a breathable garment bag for protection. Most vicuña owners wear the sweater rarely (occasion wear only) and treat care as part of preserving a long-term investment piece.