The Petrified box explores fragments caught mid-transformation and frozen in time. Once wild. Now silent.nThe Petrified box contains these items and an info card:nnGeisonoceras Fossil: Over 400 million years ago, Geisonoceras prowled ancient seas, using its straight shell and internal chambers to glide and hunt. Now fossilized into stone, each specimen is a relic of a vanished ocean — a predator’s journey, petrified.nnFulgurite: A bolt of pure sky, frozen into glass. Fulgurite is the fossil of a lightning strike — formed when sand and soil are vaporized and fused by a single, violent blast, an instant of fury made eternal. Each twisted shard marks the exact moment skyfire touched the Earth, forever preserving its form.nnSumatran Amber: Once the lifeblood of ancient trees, now hardened into ruddy, earthen stone. Amber was resin that bled from prehistoric forests millions of years ago. It was buried beneath layers of soil and volcanic ash where it was perfectly preserved in fossil form.nnMini Matter is the smaller version of our Matter subscription box. These kits explore the stuff that makes up our world (and beyond) through surprising connections. Shop the full collection here.