this post was submitted on 24 Dec 2024
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Memes

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Post memes here.

A meme is an idea, behavior, or style that spreads by means of imitation from person to person within a culture and often carries symbolic meaning representing a particular phenomenon or theme.

An Internet meme or meme, is a cultural item that is spread via the Internet, often through social media platforms. The name is by the concept of memes proposed by Richard Dawkins in 1972. Internet memes can take various forms, such as images, videos, GIFs, and various other viral sensations.


Laittakaa meemejä tänne.

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[–] jherazob@beehaw.org 16 points 21 hours ago (2 children)

For a few years I've saved this pic from previous similar posts in various places, no need even for freaking diamonds

[–] MentalEdge@sopuli.xyz 5 points 20 hours ago (1 children)

Is that a difference in the material, or is the Moissanite cut differently?

If Moissanaite just does that, then damn, that's pretty.

[–] jherazob@beehaw.org 7 points 20 hours ago (2 children)

Moissanite is a completely different substance than diamond, it's a silicon carbide crystal, and it's also made synthetically so no worries about exploitation mining, it's also cheaper

[–] Simulation6@sopuli.xyz 6 points 18 hours ago (1 children)

no worries about exploitation

Until De Beers starts synthesizing it.

[–] Bronzebeard@lemm.ee 4 points 18 hours ago

Yeah what conditions are these scientists working under?

[–] MentalEdge@sopuli.xyz 7 points 19 hours ago* (last edited 19 hours ago) (4 children)

I'm asking about the light. The lightshow produced by a crystal is down to both the optical properties of the material, but also the geometry of how it was cut.

The image is really cool, but it only demonstrates a difference if the moissanite was cut into the exact same shape as the diamonds.

A prism doesn't split light because of the material its made of, but because of its shape.

[–] UID_Zero@infosec.pub 5 points 18 hours ago (1 children)

Isn't it both shape and material? The refractive index of the material is important in determining how much the light bends at the interface.

[–] MentalEdge@sopuli.xyz 3 points 17 hours ago (1 children)

Yes, but a clear crystal is a clear crystal.

If you want to split light you can do what regardless of refractive index (as long as it isn't zero), you'd just need to cut different angles and/or project the light onto a surface that's closer/farther to get the same effect using a different material.

[–] UID_Zero@infosec.pub 1 points 12 hours ago (2 children)

Yes, but a clear crystal is a clear crystal.

No, different materials have different refractive indices, even if they're both "clear crystals." Maybe the examples given are very close in refractive index, but they still differ, therefore split light differently. https://en.wikipedia.org/wiki/List_of_refractive_indices

I'm not saying it's the entire difference, but it certainly comes into play. It could be that the more "explosive" light example is cut identically, but held slightly askew versus the others.

Point is, it's not just the cut that impacts the result.

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[–] jherazob@beehaw.org 3 points 16 hours ago

Ah, i misunderstood, yeah, there's got to be some rigging in that demo pic now that you mention it, however if Moissanite is essentially a drop-in replacement for diamonds in jewelry that is cheaper and looks even slightly nicer, which seems to be the case, then all should be well, doubly so if it kills the profits of De Beers. I'd ask to see the contrast IN PERSON if i was shopping for rings today though, nothing beats that.

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[–] rockerface@lemm.ee 65 points 1 day ago (4 children)

I want to buy a synthetic gemstone that is impossible to be formed naturally. I'm sure there's at least a few.

[–] stinky@redlemmy.com 47 points 1 day ago (19 children)

Moissanite (Synthetic Silicon Carbide):

While natural silicon carbide (moissanite) does exist, it is extremely rare and is not used in jewelry. The moissanite used in jewelry is entirely synthetic. Its properties, such as brilliance and hardness, make it a common alternative to diamonds. YAG (Yttrium Aluminum Garnet):

Originally developed for industrial and laser applications, YAG is sometimes used as a gemstone. Although it is named a "garnet," it is not related to the natural garnet family of minerals. Strontium Titanate:

Developed in the mid-20th century as a diamond simulant. It has a much higher dispersion than diamond, giving it a fiery brilliance, but it is too soft for practical jewelry use. Synthetic Rutile:

While natural rutile exists, the synthetic version created in the lab has been used as a gemstone due to its high dispersion and brilliance. The synthetic version is engineered for specific optical qualities. Titanium Sapphire (Ti:Sapphire):

A synthetic material often used in lasers. While not commonly used in jewelry, it is a synthetic gemstone that does not naturally occur in this form. These synthetic gemstones are often engineered for specific aesthetic, optical, or industrial purposes and are distinct from natural gemstones, either because they do not naturally occur in gem-quality form or because they are entirely man-made.

Synthetic Alexandrite (Czochralski or Flame Fusion):

Although natural alexandrite exists, synthetic versions often have unique compositions or colors that don’t occur naturally, created purely for novelty. Boron Nitride Crystals:

Synthetic boron nitride can be engineered into gem-like forms. It’s extremely rare in nature and appears in fascinating, unusual forms in the lab. Synthetic Opal (Novel Patterns):

Lab-grown opals can exhibit color patterns or transparency levels not seen in natural opals, such as extreme brightness or perfectly uniform "play-of-color." Synthetic Quartz Variants:

Quartz can be synthesized with inclusions or colorations (e.g., deep purple or unique patterns) that are unattainable in natural environments. Colored Synthetic Diamonds:

Lab-created diamonds can be grown with colors that are extremely rare or impossible in nature, such as perfectly vibrant reds, blues, or even neon shades due to precise chemical doping. Bismuth Crystals:

While not technically a gemstone, synthetic bismuth crystals are grown in labs and have rainbow-colored, step-like structures not naturally found in geological settings. Synthetic Spinel:

While spinel exists naturally, synthetic spinel can be created in colors or with clarity not found in nature, such as vibrant neon hues. Synthetic Perovskites:

Perovskites are naturally occurring but rare in gem-quality form. Synthetic versions, often used in solar panels, can be cut into unusual, sparkling gems. Synthetic Corundum with Patterns:

Sapphire and ruby (corundum) can be synthesized with added colors or patterns, such as stars, gradients, or even mixed hues that are impossible naturally. Gallium Nitride Crystals:

Used in electronics but can be fashioned into gemstones with unusual optical properties, entirely absent from nature. Synthetic Fluorite Variants:

While fluorite exists in nature, synthetic fluorite can exhibit colors and patterns engineered for jewelry or purely aesthetic purposes. Zirconium Carbide or Nitride:

These materials are synthetic and metallic, with a high refractive index and an unusual, futuristic appearance when polished. Metal-Organic Framework (MOF) Crystals:

MOFs are a class of synthetic porous crystals with complex geometric structures and vibrant colors, making them unique and striking. Hyper-Modified Glass or Vitreous Materials:

Glass-like gemstones doped with rare elements (such as europium or neodymium) can fluoresce or shift colors in ways impossible in natural stones. Synthetic Garnets (Uncommon Types):

Garnets like gadolinium gallium garnet (GGG) or yttrium iron garnet (YIG) are synthesized for industrial purposes but can be cut into gemstones. These stones are not just rare but impossible to find naturally, offering a unique and unconventional aesthetic perfect for someone looking to stand out.

Synthetic Alexandrite (Czochralski or Flame Fusion):

Although natural alexandrite exists, synthetic versions often have unique compositions or colors that don’t occur naturally, created purely for novelty. Boron Nitride Crystals:

Synthetic boron nitride can be engineered into gem-like forms. It’s extremely rare in nature and appears in fascinating, unusual forms in the lab. Synthetic Opal (Novel Patterns):

Lab-grown opals can exhibit color patterns or transparency levels not seen in natural opals, such as extreme brightness or perfectly uniform "play-of-color." Synthetic Quartz Variants:

Quartz can be synthesized with inclusions or colorations (e.g., deep purple or unique patterns) that are unattainable in natural environments. Colored Synthetic Diamonds:

Lab-created diamonds can be grown with colors that are extremely rare or impossible in nature, such as perfectly vibrant reds, blues, or even neon shades due to precise chemical doping. Bismuth Crystals:

While not technically a gemstone, synthetic bismuth crystals are grown in labs and have rainbow-colored, step-like structures not naturally found in geological settings. Synthetic Spinel:

While spinel exists naturally, synthetic spinel can be created in colors or with clarity not found in nature, such as vibrant neon hues. Synthetic Perovskites:

Perovskites are naturally occurring but rare in gem-quality form. Synthetic versions, often used in solar panels, can be cut into unusual, sparkling gems. Synthetic Corundum with Patterns:

Sapphire and ruby (corundum) can be synthesized with added colors or patterns, such as stars, gradients, or even mixed hues that are impossible naturally. Gallium Nitride Crystals:

Used in electronics but can be fashioned into gemstones with unusual optical properties, entirely absent from nature. Synthetic Fluorite Variants:

While fluorite exists in nature, synthetic fluorite can exhibit colors and patterns engineered for jewelry or purely aesthetic purposes. Zirconium Carbide or Nitride:

These materials are synthetic and metallic, with a high refractive index and an unusual, futuristic appearance when polished. Metal-Organic Framework (MOF) Crystals:

MOFs are a class of synthetic porous crystals with complex geometric structures and vibrant colors, making them unique and striking. Hyper-Modified Glass or Vitreous Materials:

Glass-like gemstones doped with rare elements (such as europium or neodymium) can fluoresce or shift colors in ways impossible in natural stones. Synthetic Garnets (Uncommon Types):

Garnets like gadolinium gallium garnet (GGG) or yttrium iron garnet (YIG) are synthesized for industrial purposes but can be cut into gemstones. These stones are not just rare but impossible to find naturally, offering a unique and unconventional aesthetic perfect for someone looking to stand out.

[–] davidgro@lemmy.world 17 points 23 hours ago (1 children)

Before I proposed, my (now)wife and I discussed this and we did some research, then went with Moissanite.

She has a ring with a huge very shiny stone that doesn't break when it hits something, and we both also still have some money left.

It's awesome that all these other options exist as well!

(Similarly, we got married at home with a friend as an officiant* and only close family present. It was great.

*He had earlier gotten himself ordained by mail so he could officiate the wedding of his own daughter.)

[–] stinky@redlemmy.com 4 points 17 hours ago (1 children)

Moissanite is so pretty. I'm not much of a jewelry guy. And I'm not trans. But I've always wanted to wear lots of pretty sparkly things. I'm having a blast looking through all these fun possibilities. When I was in Atlanta a pedestrian walked by me wearing all white, and dripping in silver chains, he looked like a time traveler, I want to do that but with purple or green. Do you remember where you got your engagement ring stone?

[–] Test_Tickles@lemmy.world 2 points 16 hours ago (1 children)

Have you ever considered glitter as a starting point?

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[–] FlyingSquid@lemmy.world 6 points 20 hours ago

Quartz can be synthesized

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[–] meyotch@slrpnk.net 34 points 1 day ago (2 children)

I want a stone so un-natural that the mineral is named cthulite.

[–] anton@lemmy.blahaj.zone 12 points 21 hours ago

Sorry, but the demon core is not for sale.

In it, you see a tiny civilization. You are the cosmic horror.

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[–] buzz86us@lemmy.world 3 points 18 hours ago

Same with vehicles

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