Doesn't even matter if they were crystals or not. it's like paying three dollars for a fancy name. In the end it's still compressed carbon. Or whatever cubic zirconia is made out of.
What's important is that it's SHINY.
I understand that functionally it'll be quite similar, with the swarovski having a better light diffusion pattern and internal reflection.
But, does not being name brand "diminish" the swagger??
I mean the brand seems vital to the vanity, or am I mis'interpreting this.
TP4 is right, different crystals are made from completely different ceramics. Sapphire/ruby contain no carbon at all. I don't think it's fair to say that diamond is "compressed" carbon. It's just that the crystal lattice is very efficient (one good reason why the young's modulus is a close approximation of infinity. Diamonds don't really yield before breaking) That's why high pressure can make one. If you can get enough pressure, the phase of carbon will change (to diamond phase) because that's the only lattice that will support said pressure. Currently, we also need high heat for various reasons.
It's because of the lattice that Diamond gets it properties. Light can only travel through it really slowly. (Though not as slow as some other elements. It's very interesting: Look it up!) A different "clear" crystal will have different looks, different reflective and refractive properties, etc.
I can tell the difference between CZ and Diamond, but I rather like CZ. If I ever find someone crazy enough to marry, I'd much prefer a "moissanite" (Crystalline Silicon Carbide) ring. Moissanite isn't as clear as diamond, but the optical properties meet or exceed it. It also has almost the same hardness.
This is why I enjoy the study of Ceramics. They are pretty badass all 'round.
We need to find a "bling" forum and post the results there once it's done.
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So, looking it up, Swarovski crystal is "lead crystal" or glass. Because of this I would highly recommend CZ, as it's harder, and should have much better optical properties.
The chemical formula for Cubic Zirconia is ZrO2.