5 Ugly Rocks That Transform Into Gems Worth Hundreds When You Cut Them Open

A gray rock you would kick off the trail just passed a Mohs hardness test and a specific gravity water test. It is raw sapphire still dressed in its worthless-looking schist disguise. Five rocks that look like absolute garbage on the outside but transform into gems worth hundreds the moment a saw blade bites through. Each one comes with the exact field test, the exact tool and its price, and the proof story. In This Video: • Thundereggs — dirty potato exterior hiding museum-quality agate and opal ($50-$1,200 per slab) • Rough sapphire in schist — asphalt-colored rubble concealing blue corundum ($50-$2,000/carat) • Watermelon tourmaline in pegmatite — coal-black rods with pink-to-green cross-sections ($30-$300/slice) • Boulder opal in ironstone — rust-stained creek stones with electric play-of-color ($100-$2.5M AUD) • Garnet in mica schist — blood-clot blobs that facet into rhodolite worth $20-$200/carat ⏱️ Timestamps: 0:00 — Hook: The scratch test that changes everything 1:45 — Thundereggs (Oregon volcanic ash beds) 3:30 — Rough sapphire in schist (Yogo Gulch, Montana) 5:45 — Watermelon tourmaline in pegmatite (California, Brazil, Maine) 7:30 — Boulder opal in ironstone (Winton, Queensland) 9:15 — Garnet in mica schist (North Carolina, Tanzania) 11:00 — The four tools that prove value before you walk away 🔔 Subscribe for weekly field identification guides:    / @genmovi   ▬▬▬▬▬▬▬▬▬▬ 🔍 Related Videos: • These UGLY River Rocks Are Hiding Diamonds and Gold:    • These UGLY River Rocks Are Hiding Diamonds...   • No Way! These 5 Ugly Ignored Rocks Are Actually Hiding Opals and Rubies:    • No Way! These 5 Ugly Ignored Rocks Are Act...   • STOP! If You See This Crystal Structure in a River, Do Not Touch It:    • STOP! If You See This Crystal Structure in...