Under the normal pressures and temperatures we experience on the Earth’s surface, diamonds are actually thermodynamically unstable, slowly transforming into graphite. Yes, you read that correctly, diamonds are indeed turning into graphite, but thankfully for all those diamond owners out there it’s a process that is far too slow for humans to notice.
Pyrite enjoyed brief popularity in the 16th and 17th centuries as a source of ignition in early firearms.
The 16th century marked the first time a plan such as Balthazar’s had become technologically feasible. Until then, the only firearms were matchlocks – heavy, unwieldy affairs which could neither be concealed from view nor fired without a smoldering fuse, a fuse which burned at the mercy of the elements and which gave off a tell-tale whiff of smoke to any nearby sentient target. [source]
Well-crafted obsidian blades, as with any glass knife, can have a cutting edge many times sharper than high-quality steel surgical scalpels, the cutting edge of the blade being only about 3 nanometers thick. Even the sharpest metal knife has a jagged, irregular blade when viewed under a strong enough microscope; when examined even under an electron microscope an obsidian blade is still smooth and even.
Each volcano and in some cases each volcanic eruption produces a distinguishable type of obsidian, making it possible for archaeologists to trace the origins of a particular artifact.
This is a guest post by two ladies who chose woodworking as their profession. You can find a list of all their "behind the scene" and DIY posts here. They have quite a few of them in my blog! Today we have a chance to "peek over their shoulder" and to see how they actually work. Isn't it exciting? I was jumping on my chair waiting for the video to start! All I want now is to try the wood burning myself. See if it can inspire you in the same way!
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Hello to all visitors of the blog! Today we are happy to share a detailed video DIY that shows how to wood burn an ornament on a wooden vase. BTW, it looks like this ornament is hard to make, but it is easier than you think. Watch for yourself!
Enjoy!
Here how the vase looks like when finished:
We hope this video DIY is going to be useful to some of you!
After polishing, the diamond is re-examined for possible flaws, either remaining or induced by the process. Those flaws are concealed through various diamond enhancement techniques, such as re-polishing, crack filling, or clever arrangement of the stone in the jewelry. Remaining non-diamond inclusions are removed through laser drilling and filling of the voids produced.
Cracks and fractures in a diamond reduce its clarity, but can be treated by filling. Fracture filling utilises a glass-like material, which has similar optical properties to that of diamond. It will improve the diamond’s appearance by almost two clarity grades but is not a permanent treatment. Most obvious evidence of fracturefilled diamonds can be found in the bright flashes of changing colour that can be seen under proper lighting. Other evidence is the presence of bubbles in the fracture of the filler, or ‘crackled appearance’ of the filler. All these can be picked up by 10x magnification. [source].
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