Past Matter Mystery
Past Matter Mystery
A box of interesting items with info cards. Items could include fossils, minerals, interesting materials, scientific tools, pure elements, experiments, and more.
If you order multiple boxes in the same order, we'll include different items in each box unless you specify not to.
Hoping to get specific items in your box? Leave a comment in the box in the shopping cart and we'll accommodate whenever possible. Examples: "weird stuff", "space stuff", "circular stuff", "once living stuff", etc!
WHAT IS MATTER
Matter is our popular science-themed subscription box. It's the only box to feature REAL scientific items rather than t-shirts, games, and books. Most months we have extra items, which we offer here to anyone who may be curious about what to expect in the subscription.
Please note: This listing is for a one-time box of an assortment of items and NOT a subscription. If you're interested in subscribing to Matter to get new, fresh items shipped to your door every month, you can find out more here.
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AUTHENTICITY GUARANTEED
We only list 100% verified authentic items. We work with reputable collectors, and regularly consult with our network of scientists and experts.
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Free Shipping
Orders ≥$50 qualify for free US shipping
Orders ≥$100 qualify for free global shipping -
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Pay how you like: credit card, PayPal, After Pay, Shop Pay, Venmo, Apple/Google/Meta Pay & crypto
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Simple Returns
Change your mind? No problem. Enjoy easy returns within 30 days.
WE TAKE SCIENCE SERIOUSLY
You deserve better than craft store science products. And we think learning is more impactful when you're holding a tangible piece of what you're learning about. That's why Stemcell exists.
We're dedicated to providing the best scientific products available—whether they're fragments of scientific importance, experimental activities, or just interesting things that scratch your curiosity itch.
With every new product launch, our list of new ideas gets longer rather than shorter. So check in often for our latest projects, and thanks for being a part of our endeavor to make the world a smarter place to live.
Believe in yourself; for everything else, there's science.
— TERRY MUDGE, FOUNDER & SCIENTIFIC DIRECTOR