Every day is an amazing opportunity for gazing into Creation and the perfection of Nature. When I look at sea-shells and their amazing patterns and their beautiful symmetry, or when I watch some little scallops swimming with grace or when you happen to see dozens of brown pelicans plunging into the sea all at the same time…well, it is understandable. But, sometimes you’ll end up having the same opportunity when examining the wares of a local street vendor in downtown Guaymas: it happened to me just the other day.

I sometimes walk the streets in downtown Guaymas looking for locally made sea-shell hand-crafts and this time I ended at Mr. Sansón Galindo’s curios shop; he has a nice selection of sea-shells and Mexican coins for sale, but something really caught my eye this time: just over a dozen or so hemispheres that displayed an intense golden color. I had to ask him about these because they looked very much like low-quality Mabe pearls from the “Penguin Winged Oyster” (Pteria penguin), a close relative of our beautiful “Rainbow Lipped Oyster” (P. sterna)… I actually began thinking this vendor was trying to pass off these “junk quality” Mabe for our “Cortez Mabe” but no, he was not. Instead he offered these as “Squid Pearls”.

Mr. Galindo and his "Squid Pearls". On the top-right corner the "raw" pearls. Below, the fully useable ones.

So, he told me about how these are collected by some fishermen and then left to dry up, are then “peeled” and finally sold. He told me these were “true Gems” and held up a key-chain of his that had two of these “pearls” crudely affixed with resin. I had to get one for analysis and for just $50 pesos (roughly $5 USD) the price was not a fortune to spend for a “true gem”. So I purchased a few of these for closer examination.

Provenance: the Origin of these “Pearls”

Well, if these belong to a squid, the most obvious source had to be a “Diablo Squid” as some fishermen call them, but more commonly known as the “Humboldt Squid” or Dosidicus gigas. We are quite familiar with these delicious critters because in Guaymas there is an important fishery of these mollusks, and we –even without looking for them- have been able to catch in the vicinity of our pearl farm…without much effort: you just have to be very careful they don’t tear your flesh to shreds with their powerful beak and they terrible spine covered suckers!

Bodily Origin

Well…these squid don’t have shells and they don’t even secrete any kind of pearl-like substance. The hardest parts of their bodies being the “beak” (looks like a parrot-beak) in the animal’s mouth and the “pen”, a translucent feather-like structure that offers the squid’s mantle a solid attachment point for some muscles (click on the link if you want to learn more about the Squid’s Anatomy). And every time we ate one of these we never found anything resembling a “pearl”. So, where could these “squid half-pearls” have come from???

Not a contact lens...but close enough: a peel from the squid's lens.

When I interrogated the street vendor he told me that these “pearls” were found inside the calamari’s eye. He showed me a couple of “untreated pearls” and these had some dried-up crust around them, once this was removed you could see the golden-colored “pearl”. An eye for an eye…aye, Captain! I guess it never occurred to me to cut open a squid’s eye, nor gulp it down with some lemon juice and chili sauce…that’s why I never found this item before!!! Eyes are usually discarded…aren’t they?

So, we now know where they come from…but what are they? Searching in my old textbooks I found that the only possible thing would be the “lenses” (described in some places as: …”a hard, marble-like ball object”). And it is such an amazing object…done perfectly. Its shape is a hemisphere, like that of a high-rise Mabe pearl (12 mm) and with a perfectly round diameter (14.6 mm). The dome of this lens displays a bit of iridescence, although it has cracked due to dehydration. A layer or protein flaked off the pearl and seems to have a thickness similar to that of a contact-lens. Its weight…being made of protein it feels very light (1.3 grams, a similar sized Mabe will weigh 2.2 grams). I just had to give it a name…”lens” is just too cold for this amazing object, so I gave it a new name: “CalaMabe” (joining the word “Calamari” and “Mabe”).

Beauty is in the Eye of the Beholder

A "Calamabe" and a true "Cortez Mabe"

But the beautiful part of it is not really its “dome”, but the flat, bottom portion of the “CalaMabe” this is the part that jewelers would use to attach the Mabe to a piece of jewelry, but this is the part I would NOT cover, this would be the part I would display. Why? Because it is here where you can see the “Eye”. What I call the “Eye” is a weird or perplexing thing because there is a unique optical effect there: you slowly move the “calamabe” to and fro and you will see as if there is a “floating-halo-like-eye” (think of the “Eye of Sauron” in the “Lord of the Rings trilogy”, excluding the Black Tower, the flames and the million screaming orcs) that follows you…truly mesmerizing. It might just…become…my preciousss…

The flat side af a "Calamabe" and a traditional Mabe

I was unable to capture this effect with my video camera, not having a good close-up focus, but if you still want to review the video it is here for you (the video’s audio is in Spanish at present, but will add subtitles in English in a couple of months, just after harvest):

Eye of Sauron? No! A Calamabe Pearl!

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