Incredibly, in the 1800s, it was not uncommon for Aboriginal people to be hunted and shot as specimens for science. The first Aboriginal settlers to Australia were descended from people as intelligent and inventive as any other culture at that time.
Like everyone else, they were descended from Noah, who built and managed the Ark, and from a people who developed an advanced civilization around the Tower of Babel.
Diamond also has relatively high optical dispersion (ability to disperse light of different colors).
Most natural diamonds are formed at high temperature and pressure at depths of 140 to 190 kilometers (87 to 118 mi) in the Earth's mantle.
Picture a swimmer competing in a 1,500 metre race and an observer with an accurate wristwatch.
We note that at the instant the swimmer touches the end of the pool our wristwatch reads and 53 seconds.
In the background, study coauthors John Nelson and Howard Falcon-Lang are examining the roof for plant fossils. A forest of lycopsid trees and tree ferns was uniformly developed throughout this area, and an understory of horsetails, seed ferns, and cordaitaleans (seed plants related to conifers) filled in under and around the tree fern-lycopsid forest where the land was drier.
The forest was preserved when an earthquake dropped the area a few feet allowing flooding from an adjacent river, which drowned the vegetation and buried it in sediment.
This may be the largest single-time-period fossil forest found in the fossil record. A section of a large trunk has fallen from the roof and lies in the middle of the floor, to the right of the backpack.
Diamond is less stable than graphite, but the conversion rate from diamond to graphite is negligible at standard conditions.
Diamond is renowned as a material with superlative physical qualities, most of which originate from the strong covalent bonding between its atoms.
In particular, diamond has the highest hardness and thermal conductivity of any bulk material.
Those properties determine the major industrial application of diamond in cutting and polishing tools and the scientific applications in diamond knives and diamond anvil cells.