Alpaca vs Qiviut

Alpaca is more durable and more lustrous. Qiviut is softer.

AlpacaQiviut
Typical diameter18–32 µm11–13 µm
SourceAlpacaMusk ox undercoat
LanolinNoNo
Warmth★★★★★★★★★★
Softness★★★★★★★★★
Durability★★★★★★★
Luster★★★★★
Elasticity★★★★★★
Price$$$$$$

Bottom line

Warm for its weight, lanolin-free, silky hand; less elastic than wool.

Extremely warm and rare; collected from shed undercoat.

Choose alpaca for warm, drapey, lanolin-free garments; choose qiviut if you value softer. Blends often give the best of both.

Qiviuq [sg] or qiviut [pl] is the inner wool of the muskox. In Inuinnaqtun the same word can be used to refer any down such as the down feathers of birds.From Wikipedia — “Qiviut”, licensed under CC BY-SA 4.0.

FAQ

Is alpaca better than qiviut?
Alpaca is more durable and more lustrous. Qiviut is softer. Warm for its weight, lanolin-free, silky hand; less elastic than wool. Extremely warm and rare; collected from shed undercoat.
Is alpaca warmer than qiviut?
Qiviut is at least as warm as alpaca.
Is alpaca softer than qiviut?
It depends on the grade: fine alpaca (18–22 µm) is very soft, while qiviut typically measures 11–13 µm.