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About Cubic Zirconia (CZ)
We endeavour to use the highest grades of this simulated diamond, (click here) and as any new industry developments happen we will always bring you the best available in the market.
Why use CZ
It allows us to create beautiful jewellery that looks like it is made from diamonds, creating a truly affordable, yet luxurious product. In addition, considering that the colour is equal to the purest of diamond colours….you could say it is optically flawless!
It is almost as hard as diamonds, whereas diamonds are 10 on MOHs hardness scale, CZ are an impressive 8 - 8.5.
We can also use various colours for CZ that are best suited to our product and current trend.
What is CZ?
Cubic Zirconia is a form of zirconium dioxide, and is usually colourless and relatively flawless. Since its optical and physical properties resemble, to some extent, those of diamonds, Cubic Zirconia is often used as a very good imitation of a Diamond.
CZ was developed in a laboratory in the 1970’s, followed by synthetic and commercial production.
Terms used to describe substances that are used to mimic another are faux, fake, imitation and simulated, but only becomes an issue when it is misrepresented as a diamond or other gemstone.
How do diamonds and CZ compare?
CZ is slightly heavier than a diamond of the same size, but not as hard. CZ is rated at 8.5 of the Mohs scale, versus a diamond (the hardest substance) at 10 and Corundum (sapphire and ruby) at 9.
Cubic Zirconia can be made in the same popular cuts and shapes that are used for diamonds and coloured gemstones.
A white CZ is truly colourless and has none of the inclusions found in an untreated diamond, sometimes people can think of it as a little too perfect.
Cubic zirconia produces more flashes of colour than a diamond.
Colour versions of CZ are available and they are becoming more popular as the trend towards fancy coloured diamonds increases.
How do you grade CZ?
CZ can be evaluated using the same qualities that diamonds and other gemstones are graded by the four Cs (colour, clarity, cut and carat). However, the grading is a little different.
The quality can vary; some types are less desirable than others, and clarity is one characteristic that differs greatly.
A five-tiered system of A (lowest grade) to AAAAA (highest grade) is used to define CZ qualities - we only select AAA and above.
Can you clean CZ?
CZ itself can be cleaned in an ultrasonic jewellery cleaner, but you need to consider the setting materials. As Romi 925 products are set in Sterling Silver, we would always recommend a less intense method to clean jewellery, a little washing up liquid and a very soft brush will be all it takes to remove film from your jewellery and return its sparkle