Expert Services at Rocks Jewellers


If you want an official valuation on your jewellery for the purpose of insurance we can provide that for you at both of our stores. No appointment is necessary however if you want to contact us to find out the best time to leave it in so you can get the quickest turnaround time please do so here. Rocks Jewellers valuations are accepted by all major insurance companies. Price is subject to quantity and value of items. Complimentary valuations are given for all Gold, Platinum and Diamond jewellery purchased at Rocks Jewellers.


Sometimes the value of your favourite piece of jewellery is unknown as it has been passed down through generations, and because of that, we’re here to help educate and inform you about your most treasured jewels to assess their current value. Our trained Gemologists will evaluate just about any type of jewellery and tell you more about their value & design.


If it’s been a while since you have had a thorough professional check on your jewellery this is the best way to keep it safe. Getting the security of your precious stones checked with us will mean we can stop anything happening to your jewellery before it is too late. General wear and tear can weaken the claws or even loosen the stones of a ring.


We have trained diamond graders in store daily so that we can carry out diamond grading.


Gold and precious metal prices are at an all-time high which makes now the perfect time to bring your unwanted gold, jewellery and diamonds to Rocks Jewellers for cash or to trade in towards a new piece for yourself or someone you love. We will add on 10% to the value of the jewellery there and then so you can enjoy the benefit of a trade in. We are happy to consider everything from scrap gold to one-of-a-kind historical pieces.


Pop into us anytime if you have a query about your jewellery, from storing it to cleaning it at home. Alternatively check out our Diamond Expert page to get lots of jewellery advice and loads of great bits of information.


– The Diamond Buying Guide –

A good understanding of diamonds is necessary before you begin shopping for a beautiful diamond that is just right! Our guide gives you all the necessary information on the all-important “four Cs” as well as additional information on all things diamonds. You will then be equipped to make the best decisons based on the simple, straight-forward informaition in this article.


Carat refers to the weight of a diamond not the size, however well proportioned diamond of a certain weight should be a certain size. One carat equals 0.200grams and contains 100 points.

Two diamonds of equal carat weight can have varying prices when you take into account other diamond factors such as colour, clarity and cut. As the carat size of a diamond increases, the diamond’s price increases at an increasing rate as larger diamonds are more rare.


The less colour in a white diamond, the more true colour it will reflect. The colour of diamonds is placed on a scale of D (colourless) through Z (light colour). Colour variations are very difficult to determine.

D, E. F diamonds are considered colourless; they are very rare and unique. Each of these colours is unique however the difference is only detectable by a gemmologist using side by side comparisons.

G, H. I, J diamonds are considered near colourless. While traces of colour are present the colour is not noticeable to the naked eye. When set in white gold or platinum the presence of colour is unnoticeable.

K, L. M diamonds have a faint colour. These diamonds can represent great value however the colour is detectable with the naked eye.

Diamond colours go all the way through to Z which present a yellow tint.


Clarity of a diamond is determined by the presence of, or lack thereof, of small imperfections within the diamond, known as inclusions. They are known are nature’s imprint on the diamond.

FL-IF Even under magnification, a skilled diamond grader, cannot detect any internal inclusions or flaws. These are the rarest diamonds and are much more expensive than VVS grade diamonds.

VVS1-VVS2 Using 10x magnification a diamond expert finds it very difficult to detect any inclusions or flaws. These are not visible to the naked eye.

VS1-VS2 Under magnification you can clearly see the diamond inclusions but they are very small. Again you cannot see these flaws with the naked eye.

SI1-SI2 Using 10x magnification the inclusions are obvious to a diamond grader. They are not normally visible to an untrained eye.

I1, I2, I3 – Inclusions are obvious and they sometimes affect the brilliance of the diamond.


In a well cut diamond, the light strikes each pavilion facet at an angle which allows most of the light to reflect back to the top. As it passes through the crown facets at a low angle, the light refracts upon exit. In this case, refraction is a good thing, as the bent light travels to the observer’s eye and is perceived as brilliance.


The shape of the diamond is very important when considering your diamond. There are many options and they all have their unique characteristics.

    • Round – The round brilliant cut diamond is by far the most popular choice of diamond. Over the years this shape has been optimized to make sure it takes the maximum amount of light giving it a fantastic brilliance and sparkle. This shape is perfect for a diamond engagement ring.
    • Oval – An oval cut diamond is very similar to a round brilliant cut diamond in its appearance. However it is a fraction longer with curved corners and straighter sides. For someone who has longer, slender fingers this shape of diamond is perfect in an engagement ring.
    • Marquise – The marquise cut is a traditional shaped diamond which depending on the cut can get longer or wider as the carat weight increases. The brilliance of this stone is that it looks stunning in a diamond engagement ring or with other shaped stones such as round or princess.
    • Pear – The pear shaped diamond is a traditional style and is also known as a tear drop shape. As the diamond increases in carat weight the stone becomes wider as opposed to longer. Fantastic choice for longer, slender fingers.
    • Heart – A heart shaped diamond is one of the more romantic shaped diamonds.
    • Emerald – Due to the large table it highlights the clarity of the diamond and in SI clarity inclusions can be visible. The straight rectangular cuts make this modern shaped diamond a fantastic choice for any diamond engagement ring.
    • Princess –  The princess cut is a square shape, it’s pointed corners set it apart from the other shapes of diamond available. In a diamond engagement ring it has an unrivalled sparkle and fire.
    • Radiant –A radiant cut diamond is a similar shape to the emerald cut diamond but sparkles like a round brilliant cut. It has around 75 facets making it ideal for any style of ring or jewellery.


A diamond certificate is an evaluation of the diamond that is done by an independent company confirming the colour, clarity, and carat. You may see other names for these such as diamond grading reports, diamond dossiers and more.Some of our diamonds are graded by a trained diamond grader and expert within Rocks Jewellers and the others are certified by GIA (Gemmological Institute of America), IGI (International Gemmological Institute), HRD (Hoge Rood Voor Diament). All diamonds that are certified will have their clarity, colour, carat and cut graded. They will also have the diamond measurements and fluorescence listed on the certificate.


A common question when a customer buys an eternity ring or a trilogy ring is will the diamonds be certified?

In an eternity ring there can be up to 30 stones in particular designs. These stones will also be around 10-15 points. In these ring Rocks Jewellers will grade these stones for you, keeping the costs down while still being reassured of the quality. You will receive a special certificate from us confirming the diamond grades of your diamond eternity ring or diamond tennis bracelet for example.

We hope you will find this information useful when you go to buying your diamond or engagement ring. Keeping all these factors in mind will give you the reassurance that you are making the perfect diamond choice for you!

If you would like to make an appointment to come in and talk to us and view some rings please do so here.

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The History of Engagement Rings


This gallery contains 9 photos.

          The engagement ring is a symbol of a promise, this promise is the intention to marry. Such “promise” rings have probably been around since the 4th century, but their style has changed dramatically, even if the … Continue reading

Embracing Technology to Create Stunning Jewellery

At Rocks Jewellers we are adopting the latest technology in crafting exquisite jewellery.

Rocks Jewellers are using CAD, computer aided design, technology to create the most beautiful designs that are unique and cutting edge in terms of style. Below are some examples of some pieces we have designed for customers as a bespoke designing service.

Working alongside bespoke designers and goldsmiths, CAD designers help turn hand-drawn jewellery designs into a three dimensional reality, however complicated or intricate. The role of the CAD designer is somewhere between bespoke jewellery designer and wax carver.

Once you are happy with the design, it is transferred onto a rapid-prototyping machine that transforms the image into a wax model, ready for casting. The cast metal piece is then passed on to the goldsmith to be spotlessly finished, polished and have any stones set.

CAD designers are not only required to understand CAD software and CAM hardware, they must also have a good practical understanding of traditional jewellery manufacturing — a rare combination. CAD/CAM makes the impossible possible.

If you are interesting in a free consulation please contact Robert or Michael Rock and we can go through the process in detail. 01 2886156 01 6139912

How To Clean Your Bling

The best way to clean your diamond ring.

Whether you wear a sparkler as an engagement ring or a family heirloom, people will notice that diamond, so it best be at its cleanest best when you show it off. Keeping a diamond ring clean requires gentle yet effective cleansing: light scrubbing to remove grime and dust and soft cleaning to restore the ring’s sparkle. So go ahead and flaunt it. Diamonds flatter a girl’s skin and her confidence

Step 1

Fill a bowl with warm water. Warm water removes grease and grime from your stone or band without harming any of the fixtures on your ring. Add a few drops of either liquid soap or jewellery cleaning solution, recommended for their gentle yet effective approach.

Step 2

Drop your diamond in the warm cleaning solution and let it soak for at least five minutes to get the base layer of gunk off.

Step 3

Remove the ring from the cleaning solution and scrub your diamond with a soft-bristled toothbrush to get all the grime off. Dip the ring back in the cleaning solution if you need to re-wet it and slowly work the toothbrush over all corners.

Step 4

Run your bling under warm water to rinse it.

Step 5

Dry the ring with the jewellery cloth until it’s dry to the touch. After cleaning, wear your ring or store it in a jewellery box till you’re ready to dazzle

I’m The Expert – 4 C’s

Diamond Color Chart

When we speak of grading a diamond for color we mean deciding by which amount the diamond’s “body color” deviates from the whitest possible (water like colorless) color.

It is difficult to see the subtle differences between one color grade to the next. When grading diamonds for color it is important to have a Master Color Diamond Set (pre-graded diamonds usually E-G-I-J) to compare the diamond being graded. Also a controlled lighting environment is helpful for accuracy. Diamonds must always be graded unset to ensure grading accuracy.

Diamond Clarity Chart / Scale

Most diamonds aren’t perfect and include blemishes, inclusions, or feathers naturally created through time. The clarity of a diamond refers to how clean or clear a diamond is internally. The cleaner the diamond, the higher the price. The clarity scale was developed to have a universal rating system of diamonds imperfections.

Diamond Carat Weight Chart

Diamonds are measured by carat weight, and not size. Two diamonds having the same carat weight could have different millimeter sizes because a diamond is three dimensional meaning length, width, and depth. The scale below is a comparison of the sizes based upon carat weight with cutting percentages being the same.

Diamond Shapes

To most people, the word ‘diamond’ conjures images of the ever-popular and always classic round stone. Going this route is almost guaranteed to get you the reaction you’re looking for, but you can also choose one of the more unique shapes collectively referred to as ‘fancy cuts’.

Shape does not affect the quality of the stone. If it is well cut its brilliance and value will endure no matter what. The shape of the rough diamond crystal usually dictates the shape of the stone. All are cut for maximum fire and brilliance, but facet shape varies with the cut and as a result, filters light differently. Additionally, some designs are more suited to a particular shape.

Diamond Cut

The cutting of a diamond and its proportioning, called “Make” in the jewelry trade, are of extreme importance. The fire (variety and concentration of the prismatic colors emitted) and the brilliance (liveliness or sparkle, of the diamond) directly depend on the proper cutting and proportioning of the diamond. Obtaining the optimum Table and Depth proportions are critical for superior diamonds. “The Magic is in the Make!”