High quality diamond simulants and created gems for use in jewellery making, gem collections, or just for decoration. The diamond simulants are very hard or impossible to tell from real flawless diamonds. They are even close in hardness to a real diamond and cannot be scratched, even slightly, by any normal household item. Diamond CZ, like diamonds, can scratch glass.
Small amounts of gems that can be easily told apart will be packaged together. If you would like them packed separately and labelled click here.
Do our prices look too cheap?
Our prices are very competitive and you may think that they are too good to be true. If you think this is so then please buy one of the smaller stones as a sample, or for clearer pictures, see the gallery. If you do not see what you want listed below then please suggest a cut and size using the email address in the top right corner
Lab created Rubies
These lab created rubies match the chemical properties of a natural ruby, but unlike a natural ruby they are flawless.
Choose from some rare gems and unusual cuts that are not normally found for sale to use in your jewellery or add to your crystal collection. Cuts include: Butterfly, elongated Triangles, a Millenium cut Pear, and a big cushion cut stone a bit like the hope diamond.
This bag of fake diamonds is full of 56 popular gems for your jewellery, and they make really good gifts too, especially wedding gifts. The CZ's are the highest quality, which is the only quality we deal in.
These lab created Alexandrites match the chemical properties of a natural Alexandrite (beryllium aluminium oxide), but unlike a natural Alexandrite they are flawless. These stones change colour, from green in sunlight, to purple in artificial light
For custom cut gemstones there is a charge of £20 per cut and colour on top of the price of the stones. There could be a minimum order based on the size of the stone
Cubic Zirconia Information
How much like a diamond is cubic zirconia?
Cubic zirconia has been made synthetically since 1976 and is still the best diamond simulant in the world today. When cut the same way as a diamond, it may be impossible to tell apart from a natural flawless diamond by sight alone without being examined under magnification, this is because the refractive index and dispersion are too close to that of a diamond to tell apart.
The problem is there are different qualities of CZ and the poor quality CZ's can be very poor, looking nothing like a diamond, this gives CZ a bad reputation. Other CZ stones are better quality but poorly cut or polished. It is not fair to judge Diamond CZ by one of these inferior stones. In a controlled test to see if an expert could pick out a diamond from a number of CZ's then the cz stones used would be top quality and cut the same as the diamond. The stones I sell are the best quality and the best cut, when buying a CZ as a diamond simulant you should choose these stones.
I think that identifying a CZ would normally be done by guess work, a CZ is always D white and flawless. A D White flawless stone is unlikely to be a natural diamond, so as soon as one is seen, it would be suspected to be CZ. But if the stone had flaws and sparkles like a diamond, then it is most likely to be a diamond.
All our 6A Cubic Zirconia is cut and polished to look like diamonds as much as possible. Diamonds are cut by hand, so it is possible for a jeweller to tell by looking at the facets and see that it was machine cut, our larger 6A stones, 5mm and over, are also cut by hand
How is it made?
CZ nearly always refers to synthetic man made cubic zirconia, but it also occurs naturally, natural cz is very rare. Synthetic CZ is made by heating zirconium oxide powder up to nearly 5000'F. Because it is so hot the powder needs to be heated from the centre outwards by radio waves so that the outer powder which is cooled by copper water pipes forms a crucible to contain it. As the mixture cools cz crystals grow. The zirconium oxide powder needs stabilisers and needs to be cooled carefully, the right balance of stabiliser and careful cooling determine the quality of the cubic zirconia.
The best quality crystals are flawless and are 8.5mohs in hardness. Lesser quality cubic zirconia is not so hard and may have small bubbles that implode and cause the stone to discolour over time, this doesn't happen with high quality cz. Because of its hardness it will last a long time, you can rub cz with ordinary sandpaper (not emery cloth) and it doesn't scratch.