Diamonds at Lanes

Diamond specialists with 30 years of experience & knowledge

Diamonds at Lanes

We have an established reputation, with high quality sources from London, Antwerp & around the world we’re able to provide you with the very best quality & value.

We have a large selection of diamond rings & diamond Jewellery, but our website only shows a few examples from our comprehensive stock.

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Diamond Certification

A certificated diamond is an individual diamond that has been assessed by an accredited gem laboratory. There are many gem labs in operation, but among the companies we use are GIA (Gemological Institute of America), IGI (International Gemological Institute), HRD and Anchorcert. These companies are considered to be the most respected and accredited diamond certification companies in the trade. A diamond that carries a certificate does not change the intrinsic nature of the stone or make it better quality. However, the certificate offers extra tangible assurances as to the particular nature & quality of the diamond you are purchasing.

Diamond Accreditation

Diamond shapes

Round Brilliant: Sets the standard for all shapes, admired for their sparkle. Its 58-facet cut.
Very popular for three stone anniversary rings, with two matching diamonds on the sides.
Square cut diamond, has refractive properties almost near round brilliant.
Traditional shape, not as popular as it used as it once was, but has an old world elegance to it.
Has more facets than a princess, but has the corners trimmed like the emerald shape. A radiant-cut looks equally beautiful set with either baguette or round side-diamonds.

Diamond shapes

Asscher: Beautifully unique shape, nearly identical to the emerald-cut, except that it is square.
Hard to find due to low demand, but some people prefer a heart shape diamond for sentimental purposes.
The shape can maximise carat weight, giving you a much larger-looking diamond. This ‘brilliant-cut’ diamond looks beautiful set with round or pear-shaped side stones, the length of the marquise makes fingers appear long & lender.
This brilliant-cut diamond is also called a teardrop for its single point and rounded end. The unique look of the pear shape helps make it a popular choice for a variety of diamond jewellery. If you choose an elongated pear shape, the length of the diamond creates a subtle slimming effect on the fingers.


Browse our extensive collection of diamond jewellery. Each piece is either hand selected or produced in our onsite workshop.


Diamonds with no colour like D, E, F, are very rare & are more expensive than near-colourless (G, H, I, J) diamonds. Diamonds with a faint tinge of colour (K, L, M, N, O) have a slightly warm colour and are more affordable.

For those who want a larger diamond within a certain budget, selecting diamonds with a lower colour grade may be the best option. Most diamonds appear colourless but actually have slight tones of yellow or brown. The closer the stone comes to colourless, the more valuable it is.

GIA Colour Scale

D, E, F: colourless / G, H, I, J: near colourless / K, L, M: faint yellow or faint brown / N, O, P, Q, R: very light yellow / S — Z: light yellow or light brown


Clarity refers to how free a diamond is from nature’s “birthmarks,” or tiny inclusions. Diamonds are assigned clarity grades based on what can be detected with ten-power magnification. Most internal features (inclusions) and external features (blemishes) in the diamond have little or no effect on brilliance and fire.

So if small clarity characteristics don’t affect a diamond’s beauty, why are diamonds with higher clarity grade so expensive? It’s simply because diamonds with relatively few clarity characteristics are very rare. Fortunately, diamonds of all clarity grades and prices, including those with eye-visible inclusions, can look beautiful depending on how well they’re cut and other factors. The best advice is to look at several diamonds of different clarity grades and let your eye be the guide!


Diamond weight is stated in carats, a measurement derived from the more romantic, (but less accurate) original scale of comparison using the seeds of the carob tree which were very uniform & consistent in weight. Precision balances are now used & a carat has been standardised as equivalent to one fifth of a gram. One carat is divided into 100 points, so for example, a diamond weighing half a carat can also be described as weighing 50 points or 0.50 carats. Diamonds over 1 carat are particularly rare.

Less than 5% of gem quality diamonds achieve this magic weight once they are cut and polished, making them more desirable and, inevitably, more expensive. All other things being equal, the greater the carat weight, the rarer the diamond and the more expensive it is. Although many people equate “bigger” with “better,” diamonds of all carat weight have the potential to be lively, exciting, and beautiful. The most important thing is to buy the one that’s right for you.


It is the cut that makes a diamond sparkle! A well-cut diamond will reflect light to its optimum, creating brilliance & fire.

Brilliance refers to the return of light to the eye through the diamond and the prism effect, the separation of white light into a rainbow of colours, is traditionally called the Fire of the stone.Cut is not shape i.e pear, round, oval. Cut refers to the quality of the proportioning, polish & symmetry.

Diameter: Width of the diamond as measured through the girdle. / Table: Flat top and largest facet of a gemstone. / Crown: Top portion of a diamond extending from the girdle to the table. / Girdle: Narrow band around the widest part of a diamond. / Pavilion: Bottom portion of a diamond, extending from the girdle to the point of the stone. / Culet: Height of a gemstone measured from the culet to the table.