#crystal
3 of my tourmalines, 2 of them achroites although, the middle one is not totally clear.
the black stone is a granite from the Pyrénées-Orientales, underneath lies a copper magnet in heart shape, and the little thing to the right is a yin-yang bean
#tourmalin #achroite #gemstone #crystal #bean #beauty #ya #photo | @Shonie Hutter @ramnath@nerdpol.ch
since ages I am looking for an achroite, maybe even a totally clear one but, they are rare and pricey.. like this one
#EXTREME #Amiga500 #Upgrades - #CrystalCase & #PiStorm #Updates - #DanWood
The Amiga 500 was the low-end, entry level machine back in the day but in 2022 I give it some EXTREME upgrades. Fitting a brand new Crystal Case and using a #RaspberryPi to boost the speed by over 1000x!
▬ Contents of this video ▬
00:00 - Introduction & #Amiga500
01:50 - A1200.net Crystal Case
2:32 - #Unboxing #Crystal #Case
03:19 - Fitting #Amiga 500 Crystal Case
04:54 - #PiStorm Recap
05:57 - #Emu68 Introduction
06:53 - Squarespace Sponsor Slot
07:55 - Caffeine OS Introdution & Install
09:38 - #CaffeineOS Tour
11:40 - #Networking & #Internet
13:16 - Bundled #Utilities
14:38 - SysInfo #Benchmarks
15:04 - #Scene #Demos
15:25 - #Game #Performance
16:12 - Conclusion
https://www.youtube.com/watch?v=3s1_XCv-f1o
#retrocomputing #retrogames #retrogaming #amiga #raspberrypi
Turning Scrap Copper into Beautiful Copper Acetate Crystals
Crystals, at least those hawked by new-age practitioners for their healing or restorative powers, will probably get a well-deserved eye roll from most of the folks around here. That said, there's no denying that crystals do hold sway over us with the almost magical power of their beauty, as with these home-grown copper acetate crystals.
The recipe for these lovely giant crystals that [Chase Lean] shares is almost too simple -- just scrap copper, vinegar, and a bit of hydrogen peroxide -- and just the over-the-counter strength versions of those last two. The process begins with making a saturated solution of copper acetate by dissolving the scrap copper bits in the vinegar and peroxide for a couple of days. The solution is concentrated by evaporation until copper acetate crystals start to form. Suspend a seed crystal in the saturated solution, and patience will eventually reward you with a huge, shiny blue-black crystal. [Chase] also shares tips for growing crystal clusters, which have a beauty of their own, as do dehydrated copper acetate crystals, with their milky bluish appearance.
Is there any use for these crystals? Probably not, other than their beauty and the whole coolness factor of watching nature buck its own "no straight lines" rule. And you'll no doubt remember [Chase]'s Zelda -esque potassium ferrioxalate crystals, or even when he turned common table salt into perfect crystal cubes.
#chemistryhacks #copper #copperacetate #crystal #peroxide #vinegar
Steamboat Tourmaline: One of California's Finest Minerals [+]
At nearly a foot tall this pair of red tourmaline crystals with green tips is one of the jewels in the crown of the Smithsonian mineral collection.
In 1907 the famous Steamboat Tourmaline was unearthed by Frank Barlow Schuyler in San Diego County in a rich tourmaline-bearing pocket zone in the mine which was named the Tourmaline King. It was then sold by Schuyler to Washington A. Roebling and it is now housed at the Smithsonian Institution.
The specimen’s two parallel crystals (which look like steamboat stacks) display a range of vibrant colors that start at vivid reddish-pink at the bottom and transition to a bright bluish-green at the top. The tourmaline crystals rise out of a base of Cleavelandite, which is perched atop a large quartz crystal.
#tourmaline #cleavelandite #quartz #crystal #gemstones #minerals #nature #beauty
Tricolor Calcite specimens from Durango, Mexico are very delicate when they come out of the ground. [+]
