Meteorites & Impactites
Cosmic fragments from across the universe. IMCA-authenticated and classified by The Meteoritical Society.
Each shipment contains 3–6 hand-picked specimens totaling $50–$75 in retail value. Every item arrives with a collectible research card. Here are a few examples:
Cosmic fragments from across the universe. IMCA-authenticated and classified by The Meteoritical Society.
Actual remnants of prehistoric creatures that lived millions to billions of years ago.
Pieces of historic scientific discoveries and significance. Every piece undergoes meticulously vetting and authentication by our team.
Millions of years in the making, these are among nature's most beautiful formations. All science; no metaphysical powers.
Matter is the only science box made specifically with grown-ups in mind.
Real specimens, real provenance, real research — no plushes, t-shirts, or gimmicks.
Some items may be small or fragile.
We recommend the box for ages 10+ with adult supervision for younger explorers.
Physics professor Rhett Allain (@rhettallain) shows off his favorite Matter item.
◆ BATCH #66 UNBOXING
Three steps from "huh, that's cool" to a museum exhibit on your desk.
Monthly for the impatient curious. Quarterly for the slow-burn collector. Pause or cancel anytime from your dashboard.
Subscribe today and we'll send a FREE Starter Box out the door immediately — yours to keep while you wait for the next regular batch.
Use each item's research card as a starting point for your own deep dive while holding tangible piece of what you're learning about.
Pick how often you want a box, then how far in advance you want to prepay. Longer prepay terms unlock bigger discounts.
Try a single past Matter box for a one-time discounted price. Same authenticated items, same research cards — no subscription.
Drop your email. We'll send a preview when the next box ships — plus the occasional behind-the-scenes look at how specimens get sourced.
Everything you wanted to ask before subscribing — answered without the marketing voice.
Each box contains 3–6 items covering a range of scientific subjects, and totaling $50–$75 in retail value. Each item includes a research card.
Matter ships anywhere in the world that USPS will deliver. All boxes are shipped from our US laboratory.
Free Starter Box: For all new subscriptions, a free Starter Box will be added to you order upon checkout. The Starter Box will ship asap.
Your first subscription box will ship either at the end of the current month (if you ordered by the 20th) or next month (if you ordered after the 20th).
You can always add a discounted Legacy Box to ship immediately while you wait for your next subscription box.
You'll receive a tracking number via email as soon as each box ships.
Most subscribers will never receive a repeat item. Occasionally we revisit a particularly amazing item, but only if it's been at least 3 years since it was previously featured.
To date we have featured over 400 unique items in our boxes! If you want a specific item that was previously featured, it may be available in our main store.
Yes. Active subscribers can apply one discount code to every renewal. You can enter your code in your account page:
Applying a discount will apply to the next renewal of your current subscription. So if you apply a discount today and charge it, and then apply another discount and charge it, you'll prepay your next 2 renewals and these paid boxes will be scheduled out in your current subscription according to your shipping schedule (monthly or quarterly).
Yes, while our goal is to spread the love of science, we understand that teachers and students have tight budgets. That's why we offer special educational discounts to help bring our Matter boxes into your homes, classrooms, or learning programs.
These boxes are perfect for sparking students' curiosity and complementing your science curriculum.
Use your school credentials to get your educational discount here, or send us a purchase order from your school.
If you subscribed through this site, all subscription details are editable through your Stemcell account page. If you subscribed on another site, you'll need to check that site for instructions.
Yes, you can pause/resume or cancel anytime from your account page.
You can disable the auto-renewal of your subscription at any time from your account dashboard here. Please note that this change will take effect at the end of your current subscription term. You will still receive any prepaid boxes.
Absolutely! Matter boxes are a fantastic way to spark curiosity and add a bit of science fun to your workplace. Whether it's for a holiday gift, team-building activity, or just to give your office a cool science vibe, we've got you covered.
We'll make sure they're packed with intriguing items that'll get everyone talking. We can even ship directly to your employees' door. Just let us know how many you need, and we'll handle the rest!
If your lab or company produces a scientific item, or if our organizations' missions align, we would love to explore collaboration. Whether you're a start-up or an established industry leader, we're open to a range of partnerships that drive science forward.
Past collaborations have included sponsorships, sourcing custom items, and even curating themed boxes. Contact us for more.
Yes. We adhere to the highest standards of authenticity when it comes to our rare and collectible items.
We source our items from the most reputable collectors and suppliers. Then we utilize our network of scientists and experts to assist in the rigorous process of validating each item's provenance.
If we aren't 100% confident an item is authentic, it doesn't make it into the box.
Our meticulously curated collections are designed to inspire, educate, and resonate, all while maintaining an unbreakable commitment to authenticity.
Since 2015, we've been cultivating a network of collectors and suppliers that reaches into every corner of the scientific world.
From fossil excavation sites to state-of-the-art laboratories, whether we're looking for a rare mineral specimen or a cutting-edge piece of technology, our network allows us to source virtually anything in the realm of science, while ensuring quality and authenticity.
Subscriptions start at $39.99/box. Prepay longer terms to save up to 20%. Or try a one-time Legacy Box for $29.99.
Subscribe to Matter →Every active subscription unlocks the rest of the shop.
Active subscribers get a 15% discount on every other product in the Stemcell Science Shop.
CODE INCLUDED IN YOUR FIRST BOXFound a promo? It can be applied toward your next renewal — not just for new subscribers!
No need to wait for support to make a change. You control everything from your account page.
It's the most thoughtful subscription I've ever had. Every month it feels like opening a tiny museum drawer.Maya R.Matter subscriber · Brooklyn, NY