SKU: 44529908742

Muonionalusta Iron Meteorite 2cm Cube, IVA Fine Octahedrite, Etched Widmanstatten Pattern

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Description

Muonionalusta Iron Meteorite 2cm Cube, IVA Fine Octahedrite, Etched Widmanstatten PatternA 2cm cube of Muonionalusta, iron from the core of an asteroid Muonionalusta is an iron meteorite recovered in northern Sweden and classified as a fine octahedrite of group IVA. This 2cm cube was machined from a larger mass and acid etched on all six faces, so the Widmanstatten pattern that formed in the metallic core of a differentiated asteroid is visible from every angle. Each cube weighs approximately 65 grams, with individual cubes varying by

A 2cm cube of Muonionalusta, iron from the core of an asteroid

Muonionalusta is an iron meteorite recovered in northern Sweden and classified as a fine octahedrite of group IVA. This 2cm cube was machined from a larger mass and acid etched on all six faces, so the Widmanstatten pattern that formed in the metallic core of a differentiated asteroid is visible from every angle. Each cube weighs approximately 65 grams, with individual cubes varying by about half a gram.

The cube format turns a classic iron meteorite into a precise geometric object. Crisp machined edges frame the etched crystal structure, and the density of nickel iron gives a piece this small a weight that surprises anyone who picks it up.

Structure and features

Each face of the cube has been polished and etched to reveal the interlocking bands of kamacite and taenite that define the Widmanstatten pattern. Because the kamacite plates grew along the four octahedral planes of the original parent crystal, every face of the cube intersects those planes at a different angle. The band orientation shifts from face to face, so rotating the cube in hand shows the same three dimensional structure from six different cross sections.

As a fine octahedrite, Muonionalusta carries narrow kamacite bands that give the etched surfaces a tight, finely lined texture. The metal takes a bright etch with strong contrast between the lamellae, and the pattern runs through the full thickness of the cube rather than sitting on the surface.

Discovery and provenance

The first fragment of Muonionalusta was found in 1906 near the village of Kitkiöjärvi in the Pajala district of Norrbotten, Sweden, and the meteorite takes its name from the nearby Muonio river. The Meteoritical Bulletin Database lists Muonionalusta as an iron meteorite find from Norrbotten, Sweden. Additional masses have been recovered from the surrounding area over the past century, many pulled from glacial deposits, since the fall region has been overrun by ice sheets during repeated glaciations.

Scientific context

Iron meteorites of group IVA come from the metallic core of an asteroid that melted and differentiated early in solar system history. As the core cooled over millions of years, plates of low nickel kamacite grew within the surrounding taenite along the octahedral planes of the parent crystal. That intergrowth is the Widmanstatten pattern, and the timescale required to form it cannot be reproduced in any laboratory, which makes the structure itself evidence of extraterrestrial origin. The crystal structure preserved in this cube formed roughly 4.5 billion years ago. For a deeper look at how the pattern forms and why it matters, see the Widmanstatten pattern explained.

Frequently asked questions

Is the pattern natural or manufactured?
The pattern is natural. Etching with dilute acid only reveals a crystal structure that already runs through the metal. The geometry was set when the asteroid core cooled billions of years ago.

Why does the pattern look different on each face?
The kamacite plates follow the octahedral planes of the parent crystal, and each face of the cube cuts across those planes at a different angle. The result is a different band orientation on every face of the same specimen.

How much does each cube weigh?
Each 2cm cube weighs approximately 65 grams. Individual cubes vary by about half a gram, since each one is machined from solid nickel iron and finished individually.

Will it rust, and how should I care for it?
Muonionalusta is known for its stability among iron meteorites, but all nickel iron should be kept dry. Handle with dry hands, store away from humidity, and apply a light coat of mineral oil or microcrystalline wax if you live in a damp climate.

Collector significance

Muonionalusta is the reference iron for the Widmanstatten pattern in many collections, and the cube format is the cleanest way to display it. The shape sits naturally on a desk or shelf, shows the pattern from every viewing angle, and doubles as a tactile demonstration of nickel iron density. This specimen is offered by Treasure Coast Meteorite Co., IMCA Member #3323. Browse more iron meteorites in the collection.

Classification and provenance follow the official Meteoritical Bulletin entry for Muonionalusta, viewable at the Meteoritical Bulletin Database. Unless specifically stated in titles and descriptions, all meteorites sold by Treasure Coast Meteorite Co. are scientifically classified specimens with Meteoritical Bulletin citations.

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SKU: 44529908742

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Daryl
Draper, US
★★★★★ 5
Creamy, Smooth, and Fresh — Perfect First Matcha Experience
Flavor Name: Superior Blend, Size: 1.4 Ounce (Pack of 1), Flavor Name: Superior Blend, Size: 1.4 Ounce (Pack of 1)
I tried the Naoki Superior Blend Matcha for the first time and was honestly impressed from day one. I prepared it with milk, and the matcha turned out incredibly creamy and smooth with a natural sweetness — no bitterness at all. The color was a vibrant bright green, which immediately made it feel fresh and high quality. You can tell this is not one of those dull, stale matcha powders. It mixed well and had a very clean, balanced flavor. As someone who was looking for authentic Japanese matcha without the marketing gimmicks, this felt like a great find. Looking forward to trying it next with just warm water to experience the flavor on its own.
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Reviewed in the United States on May 26, 2026
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Charles
Carnegie, US
★★★★★ 5
Smooth like butter - Better than Jade leaf
Flavor Name: Superior Blend, Size: 3.5 Ounce (Pack of 1)
This stuff is smooth. No hint of bitterness in sight. Its so smooth I actually preferred to mix it 50/50 with Jade Leaf in my Matcha lattes. Its just amazing Matcha.. so good I started occasionally drinking it by itself not as a latte... the flavors present in just the tea (no milk, no sugar, etc) is insane. Umami, savory, very minimal mineral/bitter tastes. So if you like mineral tasting matcha, try Dens tea Restaurant Matcha... it has a very strong mineraly taste. This is almost the opposte. One thing to note, this stuff is so smooth and lacks bitterness that I actually have to use 3.5g instead of 3g like I do with Jade leaf... but once you get the strength dialed in it is MINT. I personally dont care about any clumping etc because I whisk my matcha with an electric frother in about 2 oz of water before adding milk or anything else.. even the matcha i had in my fridge which got clumpy from condensation didtn stand a chance... so if you ever have lumpy matcha.. its your fault, not the matchas fault. FYI. I dont mind the Jade leaf at all (for lattes)... in fact I wil gladly use it if its on sale.. but this is objectively the better matcha. If you plan to drink by itself, dont even consider jade leaf.. I am speaking specifically for lattes... Naoki is the only one you want to drink straight. But if you are a latte person.. either one is good quality and a buy again from me.
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Reviewed in the United States on March 20, 2026
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Freya
Cuba, US
★★★★★ 5
Best matcha hands down
Flavor Name: Superior Blend, Size: 1.4 Ounce (Pack of 1), Flavor Name: Superior Blend, Size: 1.4 Ounce (Pack of 1)
My favorite matcha I’ve gotten from Amazon thus far. I love the nutty flavor and it’s so creamy and the quality is 10/10 ! I highly recommend
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Reviewed in the United States on June 2, 2026
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Xiao Min Yuan
Cuba, US
★★★★★ 5
Great quality and value!
Flavor Name: Superior Blend, Size: 3.5 Ounce (Pack of 1), Flavor Name: Superior Blend, Size: 3.5 Ounce (Pack of 1)
After my Japan trip last year, I became a Matcha lover. Bought a few different brands, Naoki is the best and is my favorite. Taste fresh, smooth and love the bright green color. I drink Matcha latte everyday. Also whenever my friends come over, I would make one for them to show off my Matcha making skills. They love it as much as I do.
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Reviewed in the United States on March 26, 2026
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Steph L
Natrona Heights, US
★★★★★ 4
Good Beginner Matcha
Flavor Name: Superior Blend, Size: 1.75 Ounce (Pack of 1), Flavor Name: Superior Blend, Size: 1.75 Ounce (Pack of 1)
I am a beginner Matcha enthusiast and I love i making matcha lattes at home (my favorite is Strawberry Matcha lattes). I have repurchased Superior Ceremonial 3× now. I am on my second 3.5 oz bag. I've also tried another well known popular affordable matcha (Jade Leaf) and I immediately decided it is better to splurge accouple more dollars in purchasing Naoki. The texture of the powder is extremely fine. The color is a beautiful dark vibrant green. The flavor is very light with a very low bitterness and a hint of sweetness on its own. It has a very clean taste. However, the flavor does get easily over shadowed by milk and sweetners in a latte. If you want to taste the matcha better you need to add more matcha powder (~4.5 grams). Considering the fact that I am not drinking Matcha traditionally, I do not need a flavor profile that is super complex like what other matcha enthusiasts rave about (often times their recs are super overpriced for its size and/or hard to get). I just need something that will be paired well when used with milk and sweetners. I look for matcha with good quality, affordability, and easy accessibility to repurchase (via Prime adds extra brownie points). Superior Ceremonial checks all the boxes to a first good intro to matcha!
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Reviewed in the United States on February 2, 2026

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