#gemolog

[onur-kuyumcu]

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[nothingeverythingallatonce]

Proustite, Bouismas mine, Bou Azzer District, Zagora Province, Drâa-Tafilalet Region, Morocco.

[noosphe-re]

[notwiselybuttoowell]

Ellensburg Blue Agate - 3rd rarest gemstone in the world, being only found in Kittitas County in Washington State

[srlgemstone]

Lace Agate Pair

Every detail is beautiful. It has a mesmerizing dimensionality.

[artifacts-and-arthropods]

Rock Crystal Flask from Ancient Rome, c.25 BCE: this stunning little flask measures just 5.7cm (2.25 in) tall, and it was carved from a solid piece of rock crystal more than 2,000 years ago

Known as an amphoriskos, this miniature vessel was likely used as a vial for perfumed oils.

Vessels made of rock crystal were rare and highly treasured throughout the Roman world, as the Getty Museum explains:

Due to the limited sources of the material and the labor-intensive process of making the vessels, rock crystal vessels were rare and expensive luxury items in the Roman world. A small amphoriskos such as this one probably contained expensive perfumed oils. This form of flask, with angular handles and a bottom knob, was also popular in ceramic vessels of the late first century B.C.

Rock crystal was also prized for its natural beauty, resilience, and mystical significance:

Like the Greeks before them, the Romans believed that rock crystal was ice that had been hardened through intense freezing. Fittingly, such a miraculous stone was believed to have the powers of an amulet and was highly valued.

The stone's hardness made it difficult to work but also highly desirable because the finished piece possessed a glossy finish and was resistant to scratches. To hollow out the vessel, an artisan used ground emery as an abrasive. Small vessels like this multi-faceted amphoriskos took advantage of the natural elongated, hexagonal structure of the quartz mineral.

Sources & More Info:

Getty Museum: Roman Amphoriskos (Flask)

Seeking Transparency: Rock Crystal and the Nature of Artifice in Ancient Rome

Travel to Eat: Roman Perfume Bottles

[simbarb]

SIMS 4 - Gemologist Pack & Crystal Creator Room

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Hope you like, Thank you ♥

[celeste-the-witch]

I just realized that my two favorite quartz I found while quartz hunting are complete opposites of each other! Ones a super rare almost pitch black quartz with a super pretty crystalline shape, and the others a fairly common color but has almost no clear spots, making its almost entirely white appearance actually a cool thing to see. It also has a much less organized shape that's more akin to a rock. They're both very special in their own ways :3. The light and the dark.

Ngl, one of the reasons I love Steven universe so much is because of all the amazing gems I got to learn about :p.

(Edited the photo to include all my lovely spoils from my quartz hunting :3. The two in the middle are the light and dark. The rest are just as amazing to me, though! I love crystals. I wish my camera was better so you could see their true beauty. They're all unique and amazing in their own special ways. )

[scienceisdope]

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)

[letstalkrocks]

Today's Specimen: Taaffeite

Taaffeite occurs in carbonate rocks along with spinel, fluorite, tourmaline, and mica. Taaffeite is similar to spinel, but much lesser known due to it's high rarity. It can be distinguished from spinel by its double refraction, while spinel is only singly refractive. It's discovery in 1945 was because it was mistaken for spinel. A gemologist by the name of Edward Taaffe noticed a cut gem looked slightly different from all the other spinel stones. It remains the first and only gemstone to be discovered after it was already faceted. Taaffeite can be found in a variety of colours, including pink and purple shades, red, brown, blue, green, grey, and colourless. It can be found in various deposits within Sri Lanka, southern Tanzania, and China. Taaffeite has an 8.0-8.5 on the Mohs hardness scale, also very similar to spinel. The major difference between the two stones is taaffeite's birefringence, chemical composition, and crystalline structure (spinel is cubic, taaffeite is hexagonal). Alternate names for taaffeite include: Bemagalite and Taprobanite.

Stay tuned for another rock talk!

[onur-kuyumcu]

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Onur KUYUMCU #onurkuyumcu #bursaonurkuyumcu #kuyumcu #onur #pirlanta #uzman #gemolog #diamond #elmas #bedesten

[noosphe-re]

[another-goblin]

Dr.Ratio: "I'm not going to betray my dear friend Gambler, actually we work together to dupe you into thinking that green rock in his bag is actually aventurine and not jade. When I bring him to you please give him the bag, it contains the pieces of actual aventurine, he'll need it." Sunday: "Yep, got it! You want to betray Aventurine because you hate him, and this green rock is aventurine, and I'll give him his bag to mock him because there's nothing valuable in it. Ok thanks bye!"

That's how that "betrayal" scene went, right? He just tells the truth, allowing Sunday to delude himself.

When Sunday asks whether Ratio is prepared to betray Aven for knowledge, he answers that there are things more important for him than knowledge. So it's basically a longer way to say "no". 

"…you ought to realize that a competent scholar knows their position and wouldn't forsake more vital matters for the sake of petty pride."

Sunday ignores this and proceeds. Then Ratio directly tells him that aventurine is in the bag. 

"...that Cornerstone has been in your hands from the very beginning"

Sunday finds jade, convinced that it's aventurine.

Then Ratio just tells Sunday what Aventurine is going to do, because at this point why not? Sunday is clearly living in his own world, and he only hears what he wants to hear.

"Then he makes up some trivial excuse, downplaying the matter, and requests the gift money. This is a gamble, one he's all too familiar with, betting on your single misstep leading to a total loss."

And Sunday is like, yeah, whatever.

[literaryvein-reblogs]

Some Gemology Vocabulary

for your next poem/story (pt. 3)

Gemology—the scientific study of gemstones

Colored Stones - This refers to all gemstones other than diamonds, regardless of their color. This term replaces the traditional distinction between "precious and semi-precious" stones.

Color Zoning - A phenomenon that occurs in many types of gem rough, where the color isn't evenly dispersed throughout the body of the stone but occurs in pockets or layers instead. The stone can have zones of lighter, darker, or different colors.

Diamond - One of two classifications of gemstones. Diamonds come in all colors, including black and white, but regardless of color they are still classified as diamonds, not as colored stones.

Fashioning - The process of cutting and polishing facets on diamonds.

Flaws - Any imperfections in gems, like visible cleavage planes or inclusions such as veils, fractures, gas or liquid bubbles, etc. If the flaw breaks the surface of the stone, it's called a surface flaw.

Half-Light - The edge of an incandescent bulb's reflection on a polished facet. Direct reflection can obscure defects on the surface of a polished facet. Only when the edge of the light reflection appears to pass the surface of the stone do some defects finally become visible.

Haloes - Disc shaped fractures, sometimes showing two or four lobes, due to strain generated at crystal inclusions e.g. zircon haloes in sapphire.

Healed fractures - Fractures occurring either during or after crystal growth which have filled with liquid and later partially healed, leaving liquid remnants or negative crystals. Healed fractures take characteristic forms in various gemstones e.g. rippled fractures in amethyst, fingerprints or feathers in sapphire and ruby.

Lapidary - The cutting of stones other than diamond.

Sources: 1 2 3 ⚜ More: Word Lists ⚜ Gemology

[bottsbotts]

With Masami's help, the tiny towners have a little community area with games, instruments, and more importantly, a safe for their moneys, so she can kiss her money and take business calls on her money and sleep on her money

it's also going to house an animal crossing-esque museum for all collectables the tiny town residents find :)

[raining-tulips]

see how I made this page - repost only with credit