There is a moment that repeats on any trip to this region: you are standing in front of a pile of blankets, all soft to the touch, all labelled alpaca, with prices running from ten to four hundred. And you have no way of telling which is which.
The good news is that there are ways, and they are not expert secrets: they are four checks you make with your hands and two questions. The bad news is that almost nobody explains them, because they do not suit the seller.
01 Four animals, four prices
Start with the source, because everything else follows from it. In these Andes there are four camelids, and only two give quality textile fibre. The alpaca is the one bred for it; the llama is more a pack animal and its fibre is coarser.
And then there is the vicuña, which is wild and from which the alpaca was domesticated more than five thousand years ago. Its fibre measures around 12 microns in diameter, and that figure places it among the finest in the world: below cashmere, which runs from 14 to 19 microns.
Its warmth has an elegant mechanical explanation: the fibres are hollow and full of air, and they carry tiny scales that make them interlock and trap that air. It is not warm because it is thick, but because of how the hairs hook together.
And it is worth knowing what sits behind the price of vicuña. In 2022 an Argentine scientific body estimated that Andean communities receive around 3% of the value generated by that fibre's supply chain. It is an uncomfortable figure and worth keeping in mind when buying.
02 What it gives you and what it does not
03 The hair that prickles
This is the check that saves the most money. Like sheep, alpacas have thick, straight hairs, called guard hairs, sitting among the fine fleece. Their job is to stop the fine coat matting, and they are far coarser than it.
Before spinning, that guard hair can be separated out, and in a well-made piece it is. When it is not, the garment prickles. So the test is literal: run the cloth over the inside of your wrist or over your neck and wait a few seconds.
And a useful clarification: alpaca has no lanolin, which makes it hypoallergenic, and it is warmer than sheep's wool without being rough. If a garment sold to you as alpaca prickles, it is not that alpaca prickles: it is that the guard hair has not been removed, or it is not alpaca.
04 The two kinds of alpaca
There are two breeds and they give different fibres, which decides what each piece is good for. The huacaya is the common one: dense, spongy, crimped fleece, similar in look to a sheep's. That natural crimp makes the yarn elastic, which is why it works so well in knitwear.
The suri is the rare one: it makes up less than 10% of South America's alpaca population, and its fibre hangs in long locks, without crimp, looking more like silk. Having no crimp, it gives no stretch, and so it goes mainly into woven cloth.
The practical consequence: if you want a jumper, you want huacaya; if you want cloth with drape, a fine blanket or a scarf with sheen, suri is what gives that. Asking about the type is also a good way to find out whether the seller knows what they are talking about.
05 The colour says a lot
After shearing, the fleece is roughly cleaned and sorted by colour before being carded and spun. That detail explains something you see in markets: pieces in natural tones — ecru, beige, brown, grey, black — come from the animal's own colour.
Intense colours, by contrast, come from dyes, and there are two worlds there. Natural ones give more muted ranges and variation within the same piece, because every batch comes out different. Synthetic ones give flat, saturated colours, perfectly identical from end to end.
Neither is better in the abstract, and saying so is more honest than pretending synthetic is a fraud. But if you are being charged the price of a natural dye, irregularity is your friend: a hand-dyed piece is almost never completely uniform.
06 Where to buy and what to accept
The structure that works best is not to buy on the first day. Spend the first day looking around the centre to get a sense of prices and of what is circulating, and save your money for when you go out to the valley, where the weaving villages are.
In a place where spinning and weaving happen in front of you, you can ask the questions a passing stall has no answer for: which animal, which kind of fleece, what it was dyed with, how long it took. And the price of a piece stops being a mystery as soon as you see the hours in it.
Two things to accept. First: good things cost, and a genuine alpaca blanket is not going to be fifteen soles. Second: the month matters. April, May, September and October are the months of little rain and good sun; in January and February it rains on 19.6 days and sunshine drops to 121 hours, and getting out of the centre becomes awkward.
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