Round, Brilliant-Cut Diamonds

Welcome to the Cape Diamonds Round, Brilliant-Cut Diamond Collection. Round diamonds are the most popular of all diamond shapes, this is because round diamonds exude the strongest and most influential sparkle due to their nature and reacting cut. A perfectly round diamond has 57 facets or 58 facets if the diamond has a culet facet. Round diamonds are incredible considerations for diamond engagement rings or diamond earrings. Please browse through our catalogue of all the carat size ranges that include a wide selection of various colour and clarity combinations suited. Cape Diamonds offers the best priced GIA round diamonds in South Africa. Visit our showroom in Green Point to view a round diamond in its essence or to gain a virtual idea of what the round diamond of different carat sizes would look like on a standard ring finger, make use of our interactive diamond app.

Size 0.40-0.44ct


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The 0.4ct is the smallest carat size to garner a GIA certificate, since from this size upwards, diamonds shine with that unmistakable sparkle. Diamonds between 0.4and 0.44 carats offer an elegant size for an excellent price since there is little discernible difference between 0.4ct and 0.5ct. Pair your diamond with other complementary stones in gorgeous jewellery design to show off its tasteful charm.

Size 0.45-0.49ct


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As always, ‘buying shy’ is good practise, since you’ll gain fantastic value if you buy just under the half or full-carat mark. So a diamond of 0.45 to 0.49 carats provides exceptional value for the same visual pay-off as a more expensive stone. Consider the iconic round, brilliant-cut which maximizes the size and shine of a smaller stone and complement your diamond with a bespoke engagement ring design.

Size 0.5-0.54ct


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At the popular size of half a carat, you’ll definitely achieve that striking, sparkling look. A diamond of between 0.5 and 0.54 carats is a classy choice for an engagement ring, offering fantastic light performance in a tasteful size. A minimalist solitaire ring design will allow the diamond to stand out, but it will also make an impression in a halo ring design.

Size 0.55-0.59ct


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Since diamond prices jump at every 0.10 points, buying a diamond in this range promises excellent value for a worthy weight. At a size of 0.55 to 0.59 carats, you’ll achieve sparkle and that all-important glamour, especially when you make sure your diamond’s carat size is optimized by the perfect cut.

Size 0.6-0.64ct


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Sitting halfway between the cut-off points of 0.5ct and 0.75ct, this range could offer you great value at a decent size if you shop carefully and select the right cut and clarity. A 0.6ct diamond will shine beautifully in a solitaire engagement ring, or you could enhance its size and shimmer by setting it in a halo design.

Size 0.65-0.69ct


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If you can find a diamond in this range, you might be able to select a higher clarity and icier colour grading that will ensure you make an excellent investment choice. Edging up from the more modest 0.5ct mark, you’ll achieve that slightly bigger size that guarantees shine and sophistication.

Size 0.7-0.74ct


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When you reach the range of 0.7 to 0.74 carats, you’ll be in that blissful place where good value and size meet. Buying just under the cut-off point of 0.75ct is a smart move since there will be little discernible visual difference, but the slightly lower weight may translate to savings which you could invest in a higher colour or clarity grading.

Size 0.75-0.79ct


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A diamond of 0.75ct is a popular choice for engagement rings, and a diamond of this weight will retain its value for many years to come. One of the so-called “magic sizes”, selective diamond dealers prize diamonds around this number for their investment potential. A diamond of 0.75 to 0.79 carats is less expensive than the prized 1ct diamond, but you lose little in terms of brilliance and impact.

Size 0.8-0.84ct


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Though it’s just shy of the 1ct mark, few admirers of your 0.8ct diamond engagement ring will know the distinction in size. Yet a minimally lower carat weight of between 0.8 and 0.85 carats will make an appreciable difference to your budget. You could potentially translate these savings into a higher colour or clarity grading, which will allow your diamond to sparkle flawlessly.

Size 0.85-0.89ct


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Most people won’t be able to tell the difference between a 0.85 carat diamond and the popular 1ct diamond, so a diamond in this range will sparkle magnificently but carry a lower price tag. That means if you’re seeking a diamond with optimal shine and clarity, you could be looking at the stone of your dreams.

Size 0.9-0.94ct


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At almost one carat, a 0.9ct diamond is hugely appealing to those seeking an eye-catching engagement ring with excellent value and pricing. Unless it’s measured by an expert, none of the admirers of your beautiful diamond will know the difference. Since the price jumps up significantly at the 1ct mark, you’ll gain savings while obtaining the sparkling diamond you desire.

Size 0.95-0.99ct


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When you “buy shy”, you buy smart, since purchasing a diamond in a carat size just under the magic number of 1ct may translate into a significant saving without sacrificing any visual appeal. A diamond ranging in size from 0.95 to 0.99 carats will be sure to make a striking impression in a glamorous engagement ring design.

Size 1.0-1.09ct


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If you choose a 1ct diamond, you’ll be in good company since it’s the most popular weight for an engagement ring. You might want to consider a fancy-cut diamond of this shape since it will be less expensive than a round, brilliant-cut diamond, but you can’t go wrong with a traditional 1ct diamond for both breath-taking impact and exceptional investment value.

Size 1.10-1.19ct


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When purchasing diamonds of 1ct and higher, you want to ensure you’re maximizing the value of your precious purchase. Seek our consultants’ expert advice on selecting the right clarity, colour and cut when choosing your diamond engagement ring, so you match exquisite beauty with the perfect price and investment potential.

Size 1.2-1.29ct


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When it comes to diamond weight, there’s a noticeable shift in pricing at every 0.10 points, which means that diamonds of 1.2 – 1.29 carats will be more valuable than those of a slightly smaller size. Diamonds of the “magic number” of 1.25 carats are particularly in demand. Such value can make for an excellent investment, especially when you pair your 1.2 or 1.25 carat diamond with exceptional clarity and colour.

Size 1.3-1.49ct


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Will you be able to tell the difference between a diamond of 1.3 or 1.4 carats and one weighing a full 1.5 carats? The answer is probably “no” unless you’re an expert gemologist with a special measuring tool. You will lose no visual impact or sparkle at this size yet buying just under the 1.5 mark will certainly be felt in your budget.

Size 1.5-1.69ct


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At the “magic” size of 1.5 carats, you’ve reached a key milestone in terms of value and wow-factor. If you’re looking for a truly stylish engagement ring, a diamond around 1.5 carats will be a regal centrepiece in the setting of your choice, from a simple solitaire to a romantic trilogy ring. 

Size 1.7-1.99ct


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If you’re a savvy diamond-buyer, you’ll already know that buying just under a milestone size like 2 carats is a clever decision. While diamonds in the range of 1.7 to 1.99 carats will look almost identical to their 2ct counterparts, you’ll notice the difference in price, giving you savings that you could use to invest in colour and clarity, which will certainly be noticed at this queenly size.

Size 2.00-2.49ct


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Larger diamonds are more valuable than smaller diamonds, not just because of their size, but because of their rarity, meaning the price goes up dramatically at each full carat notch. Diamonds of 2ct offer incredible shine and glamour, displaying a generously proportioned and sparkling surface. Let our expert consultants advise you on the optimum colour, cut and jewellery setting, to make the most of your dazzling investment.

Size 2.5-2.99ct


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When searching for a larger diamond that will make a definitive statement, you’d be wise to select those in the 2.5 to 2.99 carat range. Just under the 3ct mark, a diamond of this size will create a majestic effect set in a beautifully crafted engagement ring. While this is a highly valuable investment buy, diamonds of 2.5 – 2.99 carats will be noticeably less expensive than their almost-identical 3ct cousins.

Size 3.00-4.00ct


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Offering glorious sparkle and enough charisma to take your breath away, a diamond of 3 to 4 carats presents a royal choice for an engagement ring. With our expert advice, you can select a high-quality cut, colour and clarity grade to grace your stunning diamond. A refined, bespoke engagement ring design will perfectly display this rare natural treasure, making it a superlative investment.