Could this rough opal be the cut of the year? I'm going in

faceted gem sphalerite - 42.23 ct

UAV Magnetics UNR Geothermal Energy Research

Rock and Mineral Identification

PYRITE,RARE TRAPEZOHEDRA MODIFIED BY OCTAHEDRA

Visualizing 4D Pt.1

The Client Hated This Slab

1/6 The Rules Of Abstraction With Matthew Collings

Warum eine UKW Abschaltung nicht sinnvoll ist

432 Hz and 528 Hz EXPLAINED: The Most Powerful Frequencies in The Universe

Watchmaking: Machining a Watch Gear

faceted gem sphalerite - 21.76 ct

Inside this 50 carat uncut gem is a black opal you won't believe

A Graphene Transistor Breakthrough?

This painting went from $180,000 to $10,000 in 2 years - is the Art Market Tanking?

Nr.980 Rough diamond .

Cheap Spectrometers are really Damn Useful.

How did the Enigma Machine work?

"Women Are Nests of Evil!" - The Buddha

draw with me | fall in the swiss alps 🍂🏔️🪵