#gemology
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Ellensburg Blue Agate - 3rd rarest gemstone in the world, being only found in Kittitas County in Washington State
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The name of the crystal is derived from the word “methustos” meaning intoxicated. The prefix “a-” meaning “not”, translates the word to “not intoxicated” or “not drunk”. The ancients used to carry the stone in hopes it will stop them from becoming drunk or that it would cure their drunkenness. This belief probably stemmed from the myth of the titan Rhea giving an amethyst to the god of wine and madness Dionysus to protect him.
Follow @scienceisdope for more science and daily facts.
Video credit: unknown (please message me if you know/are the creator)
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see how I made this page - repost only with credit
#personal#commonplace#commonplace book#commonplace journal#commonplace spreads#journal spreads#journal ideas#commonplace ideas#stuyblr#study aesthetic#gemology#minerals#jewelry#gemstone jewelry#pearl jewelry#bujo#common place journal#junk journal#scrapbook#scrapbook journal#journaling#journal comunity#journaling community#journal inspo
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*raises hand* re: tanzanite being heat-treated... what does that mean?
Also, I never thought about jewelry not retaining speculative value. I suppose the whole "diamonds are a girl's best friend" thing makes it seem like that jewelry/gems are an investment/safety net.
Good question!
Now, let me preface this by saying: 95% of all colored gemstones on the market have had some manner of artificial treatment to make them more appealing. Generally speaking, this is a known quantity, and not something you need to be alarmed about.
By far the most common treatment (and it's attested in the archeological record, btw, so humans have known about this for a long time) is heat treating. You heat a mineral to a certain temperature for a given amount of time and sometimes the clarity will be improved, or the color will change or intensify. Courtesy of r/gems, here's a great side-by-side comparison of what most tanzanite looks like, before and after heat treatment:
This isn't a scam and it isn't some big secret -- it's best to assume that any given colored stone has been heat treated unless you have an independent lab report from a reputable firm saying otherwise. No, a private appraisal isn't good enough. No, the jeweler's word isn't good enough either. Heat treatment is stable (i.e. permanent) and not discernible to the naked eye, so it's not something you as an average consumer needs to worry about. It's also not a value determinant in almost any stone. Nobody gives a crap if your amethyst is 'unheated'. Nobody cares. Don't get tricked into paying a premium for it.
The majority of tanzanite is reddish-brown when it comes out of the ground, and only after heating do its lovely blue-violet tones show.
For your second question, while diamonds do retain more of their value, speaking very generally, than almost any colored stone, the speculative value of gemstones bought at retail is, like most things, effectively nil. Buy things because you love them, not because you're hoping someone will pay you more for them later -- the late capitalist need to turn every blessed thing on the planet into a casino chip is what turns people into motherfucking Daleks.
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Blue Fluorapatite on green Elbaite Tourmaline. Alto da Cabeca Mine, Brazil
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Monday's Mineral: Feldspar Gemstones
Ah, gemstones, one of the banes of my existence as geologist. Don't get me wrong, I can appreciate their beauty but all the silly trade names that gemologists come up with for varieties of the same mineral drive me up the wall.
Anyway, feldspars can be gemstone quality if they are not broken down by natural processes first. There's only a couple that really matter: kspar, albite, and labradorite.
Moonstone is probably the most "valuable" of these gems. It is sometimes known as adularia due to it's adularescence (moonshine effect). This is caused by the orientation of albite crystals within orthoclase. It is usually colorless or white.
Sunstone resembles moonstone but has a golden color and a warm, shiny, golden adularescence. This is an albite gemstone, as is aventurine. Aventurine has a characteristic appearance of aventurescence, or a sparkly, metallic look.
Labradorite is a mixed plagioclase feldspar that exhibits labradorescence, reflected light caused by characteristic polysynthetic twinning of the mineral.
Finally, there is Amazonite, a microcline gemstone that usually green or light blue-green in color. It often exhibits perthite texture seen as white lines. Perthite texture occurs with exsolution or unmixing.
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Today’s Gemology Study Space 🕯️🪨📝💎
Today I learned about the three major categories of crystal shapes. Prismatic (like quartz, for example), tabular (like barite), and equidimensional (like pyrite, or garnet). Obviously what I’m writing here is a very simplified explanation of a highly complex subject, but I thought I’d share!
-Velvet Rose 🌹
#studyblr#studyspo#books#study motivation#studying#study aesthetic#study blog#study#gemology#gemology studies
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Rectangular and rectangular cushion cut aquamarines
#vintage jewelry#jewellery#fine jewelry#jewelry#estate jewelry#antique jewelry#loose gems#loose gemstone#aquamarine#aqua#gemology#gemologist
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“Pharaoh's eye sapphires” are a naturally occurring rarity in Australian parti sapphires where a yellow core is surrounded by blue or green.
Parti sapphires, also known as polychrome sapphires, show more than one color in a single stone. The most common bicolor combination is yellow and green. Rarer stones that show blue, purple, or lavender colors, or tricolor combinations, are especially prized.
#gemstones#gems#gemology#sapphire#sapphires#linked the baroque beauty. the gemcutter found it too beautiful raw so he only flattened the back to see the color zoning#maybe i look at too much historic/haute joaillerie bc 10k almost seems cheap#someone said it reminds them of starry night!#fave#mine
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Gorgeous rough blue chalcedony.
#chalcedony#blue aesthetic#blue chalcedony#gemstones#raw gemstone#gemstone jewelry#lapidary#cabochon#cabochons#lapidary equipment#jewelry#jewelery#gemologist#gemology#geolocation#geology#srl gemstone
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Olivine
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Spinel on marble
⚒ Location: Luc Yen District, Vietnam
📸 More photos: https://minerali.rs/2018/04/26/spinel-on-marble/
#crystals#minerals#geology#mineralogy#mineralcollection#gemology#geo#gems#crystal#mineral#rocks#science#earth#nature#natural stone#natural beauty#wonderful
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The longest time ago my best friends sister told me she took a rock from every place she visited, and used them as decor in her potted plants. I started picking them up, my inner child who collected piles and piles of rocks intrigued. But I sort of love this collection box scrapbook method instead. I spent the morning creating labels, writing memories on the back, of my recent travels this July. I love seeing how different all the landscapes are, and how that translates into their rocks.
#personal#geology#witchblr#witchy#witchcraft#witchcraft community#nature#rocks#cool rocks#spirituality#green witch#green witchery#crystal#crystals#crystal magick#my scrapbook#scrapbook journal#scrapbookingideas#gemology
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Ella Chedburn
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My gemology notes for Part 1 of the free Open Education course!
I’d call today a successful first day, studying gemology. I’ll probably make flash cards for future reference. But I love this course so far! It’s detailed and full of fascinating information, and it has a question after each part (with an answer you can reveal after trying to solve it yourself).
-Velvet Rose 🌹
#studyblr#studyspo#books#study motivation#studying#study aesthetic#bookblr#booklr#study blog#study#gemology#crystals#rocks#gemstones#gemology studies#study hard#study session
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