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Cubic Zirconia (CZ)

What is Cubic Zirconia?

Also known as Zirconium dioxide,is a synthetic stone closely resembling the properties of a diamond, specifically its visual likeness and durability. It can be cut just like a diamond, and graded like one.

Why use CZ – Perhaps the most important reason is that it allows you to wear an exquisitely designed piece of jewellery at a fraction of the cost of using diamonds. Indeed, CZ often has no flaws. It will look like the perfect diamond.

It is very durable; it is almost as hard as diamonds, whereas diamonds are 10 on MOHs hardness scale, CZ are an impressive 8 - 8.5.

Cubic Zirconia can be made in the same popular cuts and shapes that are used for diamonds and coloured gemstones.

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.

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.

What are Romi 925 Jewellery pieces made of?  

Our Jewellery is created and made out of Sterling Silver that is Rhodium plated and polished. Rhodium is often used to give a platinum-type finish and durability to silver or gold. This metal top layer is usually applied using electroplating. 

Vermeil is a combination of Sterling Silver with a layer of gold on top. To be considered vermeil, the gold must be at least 9 carat and be at least 1.0 microns thick.

The Romi 925 CZ stones are AAA - AAAAA quality and are an excellent diamond substitute.  

Can you grade CZ like you grade diamonds?

CZ can be evaluated using the same qualities that diamonds and other gemstones are graded by Colour, Clarity, Cut and Carat.  However, the grading is a little different.

The quality of CZ's manufacture does 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.

How do I Clean my Romi 925 jewellery?

CZ itself can be cleaned in an ultrasonic jewellery cleaner, but you need to consider the setting materials. As our jewellery is set in silver, we recommend a less intense method, 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.

How do I find out my jewellery size ?  

Please see our ring size chart below. Most of our rings in stock are in sizes K,M and P. In addition, our standard bracelet length is 7 inches, (just under 18cm), and our necklace and pendant length is 16-20 inch adjustable inches (approx.40-51 cm). Our “By the yard” necklace is 40 inches long (approx.102 cm)

Size J
Size K
Size L
Size M
Size N

Size O
7 ½
Size P

What are my shipping options ?

We offer free delivery within the United Kingdom on all orders.

Royal Mail Signed For, delivery should be within 1-2 working days but please allow up to 5 working days.

Delivery outside UK:-

EUROPE- £10.00

Royal Mail International Signed For (5-7 working days)

REST of the WORLD/ USA- £15.00

Royal Mail International Signed For (7-10 working days)

Purchases may not be shipped to P.O. boxes, but can be delivered to an alternative address, although all receipts and correspondence will be sent to the billing address.  To ensure the security of your delivery, we provide tracking for each delivery. If you have delivery specific questions, please email info@Romi925.com

How long does it take for my order to be shipped? 

Delivery should be within 1-2 working days but please allow up to 5 working days

I love your site and want to give a gift certificate, is this possible?

We would be delighted to arrange a personalised E -Gift Certificate with the person’s name and the occasion for the gift i.e. Birthday, Anniversary.  You can gift to any value but we would recommend a value of £25, £50 or £100. 

Does the jewellery arrive in packaging ?

Products purchased from Romi 925 arrive suitable for gift giving. Each product is enclosed in our signature Romi 925 packaging. 

What is your repair policy? 

In the very unlikely event that your Romi 925 jewellery needs repairing, it is fully guaranteed against any defect in craftsmanship, including gold plating for a period of one year from the date of purchase.

What is your returns Policy?

  • Our jewellery is fully guaranteed against any defect in material or craftsmanship except for any natural inclusions in stones, loss or accidental damage. 
  • Provided goods are returned as sold in the original packaging, and with proof of purchase within 14 days, they can be exchanged or a fully refunded. 
  • The purchaser is responsible for the cost of returning the goods. If goods are returned due to defects in craftsmanship, you will be credited the return shipping cost once the defects have been verified.
  • We recommend taking the item to the Post Office, and send it registered, or a reputable courier service, as we cannot accept liability for goods lost in transit.

Warranty & Repairs 

Every piece of Romi 925 jewellery is guaranteed for 13 months from the date of purchase subject to normal conditions of "wear and tear".

Our collection is designed using traditional hand-drawn techniques in our (needs information), and are hand-crafted using Sterling Silver with18ct Gold vermeil plating and the highest quality CZ

Our jewellery is hallmarked in the UK at the London Assay Office, fulfilling the requirements established by the law on Noble Metals.

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Free UK shipping
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Customer service Call us - 020 3929 0082
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money back guarantee! Send within 14 days
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Jewellery Guide See our FAQ pages

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