Mossanite

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They downplay the replicated bit a lot now compared to the presentations they used to do.

Is funny how they never seem to manage to show moissanite in natural daylight though.
 
To be fair how many times have you seen any jewelry shows presented outside to show a piece in natural daylight?

But then not every show features stones that can outshine diamonds. And apparently look really fake in natural light.

If moissanite was so fabulous, they'd be trying every tactic to allay potential customers' fears of buying something different to diamonds that costs the same.
 
But then not every show features stones that can outshine diamonds. And apparently look really fake in natural light.

If moissanite was so fabulous, they'd be trying every tactic to allay potential customers' fears of buying something different to diamonds that costs the same.

You hear presenters often say a piece looks better outside. Also Moissanite doesn't cost anything close to diamonds of a similar quality.
 
Moissanite should really only be compared to other man made stones (whatever name is applied to them) like Diamonique, Diamonesque or Cubic Zirconia.

The spiel that Moissanite has xx times more brilliance than Diamond is of course just sales patter, while it's no doubt true it just adds weight to the demonstrable fact that these man made stones look absolutely nothing whatsoever like Diamond.

To my eye it's brilliance resembles that of a Crystal Glass Prism, I wouldn't go so far as to say it looks like you have Disco Glitterballs on your fingers but it very obviously looks like what it is.

Artificial :mysmilie_59:
 
Cue the Star Wars theme...
 

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From Wiki

As a gemstone used in jewelry, silicon carbide is called "synthetic moissanite" or just "moissanite" after the mineral name. Moissanite is similar to diamond in several important respects: it is transparent and hard (9–9.5 on the Mohs scale, compared to 10 for diamond), with a refractive index between 2.65 and 2.69 (compared to 2.42 for diamond). Moissanite is somewhat harder than common cubic zirconia. Unlike diamond, moissanite can be strongly birefringent. For this reason, moissanite jewels are cut along the optic axis of the crystal to minimize birefringent effects. It is lighter (density 3.21 g/cm3 vs. 3.53 g/cm3), and much more resistant to heat than diamond. This results in a stone of higher luster, sharper facets and good resilience. Loose moissanite stones may be placed directly into wax ring moulds for lost-wax casting, as can diamond,[62] as moissanite remains undamaged by temperatures up to 1800 °C. Moissanite has become popular as a diamond substitute, and may be misidentified as diamond, since its thermal conductivity is closer to diamond than any other substitute. Many thermal diamond-testing devices cannot distinguish moissanite from diamond, but the gem is distinct in its birefringence and a very slight green or yellow fluorescence under ultraviolet light. Some moissanite stones also have curved, string-like inclusions, which diamonds never have.[63]
 

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