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Diamond Shapes for Engagement Rings in South Africa

Choosing the right diamond shape is one of the biggest decisions you’ll make when buying an engagement ring. The shape you choose affects how big the diamond looks, how much it sparkles, how it suits your hand – and how much it costs.

On this page, you’ll find an easy guide to the most popular diamond shapes in South Africa, how they compare, and how to choose the perfect one for your style, lifestyle, and budget.

What Are the Different Diamond Shapes for Engagement Rings?

There are ten main diamond shapes used in engagement rings. Each has its own personality, price profile and visual impact on the hand.

Round Brilliant Diamond

The round brilliant is the classic engagement ring diamond shape – and still the most popular in South Africa and worldwide.

A round brilliant has 57 or 58 carefully engineered facets designed to maximise sparkle and fire. Because cutters lose more rough diamond when cutting a perfect round, it is usually the most expensive shape per carat.

Pros:

  • Maximum sparkle and fire
  • Timeless and universally flattering
  • Works beautifully in almost any setting style

Cons:

  • Highest price per carat vs other shapes
  • Looks slightly smaller face‑up than elongated shapes of the same carat

Sparkle: Exceptional – the industry benchmark.
Size perception: Appears balanced and proportional, but not as large as oval, pear or marquise at the same carat.
Value: Premium – you pay more for the cut precision and demand.

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Oval Diamond

Oval diamonds offer the brilliance of a round with a more elongated, modern silhouette. They’ve become a top choice among South African couples in recent years.

Pros:

  • Looks larger on the finger than a round of the same carat
  • Flattering and finger‑lengthening
  • Strong sparkle and fire

Cons:

  • Some stones show a “bow‑tie” shadow across the centre
  • Proportions (length‑to‑width ratio) matter for beauty and spread

Sparkle: Very good to excellent, close to round.
Size perception: Elongated outline gives extra finger coverage and a bigger look.
Value: Better value than round, often priced slightly lower per carat.

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Princess Cut Diamond

The princess cut is a square or slightly rectangular brilliant‑cut diamond with sharp corners and strong contemporary lines.

Pros:

  • Modern, geometric look
  • Excellent sparkle in a square outline
  • Typically cheaper than round for the same carat and quality

Cons:

  • Pointed corners need protective settings (prongs or bezel)
  • Shows inclusions in the corners if clarity is too low

Sparkle: High – second only to round among popular shapes.
Size perception: Face‑up size is similar to round, slightly smaller than oval for the same carat.
Value: Very good – you get more carat for your budget than with round.

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Cushion Cut Diamond

Cushion cut diamonds have a square or rectangular outline with rounded corners and soft, pillow‑like edges – a favourite for vintage and romantic styles.

Pros:

  • Romantic, vintage‑inspired appearance
  • Versatile – works with both modern and antique‑style settings
  • Often better value per carat than round

Cons:

  • Can face‑up smaller than round or oval at the same carat
  • Many different facet patterns – some cushions are “crushed ice” and others “chunky”

Sparkle: From soft, romantic glow to intense “crushed ice” sparkle, depending on cut style.
Size perception: Slightly smaller face‑up than round and oval, especially in more square cushions.
Value: Good – typically more affordable than round and oval.

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Emerald Cut Diamond

Emerald cuts are rectangular step‑cut diamonds with long, elegant facets and clipped corners. Instead of intense sparkle, they offer a sophisticated “hall of mirrors” effect.

Pros:

  • Understated, elegant and timeless
  • Elongated shape makes fingers appear longer and slimmer
  • Often better value per carat than round

Cons:

  • Step cuts show inclusions and colour more easily – you need higher clarity and colour
  • Less “sparkly” than brilliant‑cut shapes (more flashes than glitter)

Sparkle: Subtle, with large, mirror‑like flashes rather than glittery scintillation.
Size perception: Good finger coverage, especially in longer emerald cuts.
Value: Very good, but higher clarity and colour grades are recommended.

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Pear / Teardrop Diamond

Pear shaped (teardrop) diamonds combine a rounded end and a pointed tip. They offer a romantic, slightly vintage feel and are very flattering on the hand.

Pros:

  • Looks larger for its carat weight
  • Finger‑lengthening and slimming
  • Distinctive, romantic shape

Cons:

  • The tip can be prone to chipping if not well protected in the setting
  • Some stones show a visible “bow‑tie” shadow

Sparkle: Very good – similar to oval when well cut.
Size perception: Excellent – one of the best shapes if you want a diamond that appears larger.
Value: Generally favourable vs round, with strong presence for the price.

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Marquise Diamond

Marquise diamonds have a long, narrow shape with pointed ends. They give maximum finger coverage and can appear very large for their carat weight.

Pros:

  • Looks bigger than many other shapes at the same carat
  • Strong finger‑lengthening effect
  • Suits both vintage and contemporary designs

Cons:

  • Tips must be well protected to prevent chipping
  • Proportions and symmetry are critical; some marquise diamonds show a strong bow‑tie

Sparkle: Good to very good, depending on cut quality.
Size perception: Outstanding – one of the best shapes for a bigger appearance.
Value: Strong – large face‑up area for the price.

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Radiant Cut Diamond

Radiant cuts combine a rectangular or square outline (similar to emerald cuts) with brilliant‑cut facets for extra sparkle.

Pros:

  • Excellent brilliance in a rectangular or square shape
  • Good choice if you love emerald shape but want more sparkle
  • Corners are trimmed, making them less fragile than princess cuts

Cons:

  • Face‑up shape and ratio can vary a lot – from square to very elongated
  • “Crushed ice” look is common; some buyers prefer more defined facets

Sparkle: High – more scintillation than emerald cuts.
Size perception: Good finger coverage, especially in elongated radiants.
Value: Typically priced below round, comparable to cushion and emerald.

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Asscher Cut Diamond

The Asscher cut is a square step‑cut diamond, similar to a square emerald cut, with deep pavilion and a distinctive “windmill” pattern.

Pros:

  • Strong Art Deco feel – ideal for vintage lovers
  • Unique, architectural look
  • Eye‑catching step‑cut pattern

Cons:

  • Shows inclusions and colour more than brilliant cuts
  • Face‑up area is smaller than round for the same carat weight

Sparkle: Subtle, structured flashes rather than intense sparkle.
Size perception: Smaller appearance for the same carat vs round and oval.
Value: Good value for something rare and distinctive.

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Heart Shaped Diamond

Heart shaped diamonds are the ultimate romantic statement, with a clear heart outline that symbolises love.

Pros:

  • Highly symbolic and sentimental
  • Instantly recognisable, unique choice
  • Ideal for couples who want something different

Cons:

  • Needs to be large enough for the heart shape to be clear (usually from 0.50–0.70ct up)
  • Cut quality greatly affects appearance – lobes, cleft and symmetry must be precise

Sparkle: Good to very good, similar to a modified brilliant cut.
Size perception: Moderate – a well‑cut heart can look substantial, but much depends on proportions.
Value: Often priced similarly to other fancy shapes, with higher demand influencing price.

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Most Popular Diamond Shapes for Engagement Rings in South Africa

Top 3 Diamond Shapes Chosen by South African Couples

While every couple is different, three shapes consistently come out on top in South Africa:

  1. Round Brilliant – still the number‑one choice for its classic look, maximum sparkle and timeless appeal.
  2. Oval – especially popular with younger buyers and those looking for a modern, elongated shape that looks bigger for its carat.
  3. Cushion / Princess – both popular for their value, distinctive style and suitability for halo and vintage‑inspired designs.

Trends: Classic vs Modern Diamond Ring Shapes

Types of Diamond Shapes for Rings (With Photos)

Diamond shapes are usually grouped by how their facets are arranged.

Brilliant‑Cut vs Step‑Cut vs Mixed‑Cut Diamonds

  • Brilliant‑cut diamonds (round, oval, pear, marquise, princess, cushion [brilliant style], radiant, heart)
    • Designed for maximum sparkle and fire
    • Great at hiding minor inclusions and slightly lower colour
  • Step‑cut diamonds (emerald, Asscher)
    • Long, parallel facets create a “hall of mirrors” effect
    • Emphasise clarity – imperfections and colour are more visible
  • Mixed‑cut diamonds (radiant, some cushions)
    • Combine step‑cut outlines with brilliant‑style facets
    • Balance a larger face‑up look with good sparkle

Classic Shapes vs Fancy Shapes

  • Classic shapes: Round, princess, emerald are traditionally seen as the “core” engagement ring shapes.
  • Fancy shapes: Oval, cushion, pear, marquise, radiant, Asscher and heart are considered fancy shapes. They often offer better value per carat and a more individual look.

Best Diamond Shape for Engagement Rings (By Style & Lifestyle)

Best Diamond Shapes for Classic & Timeless Styles

If you want your ring to look just as beautiful in 30 years as it does today, consider:

  • Round brilliant
  • Oval
  • Emerald cut
  • Simple cushion cuts in clean, elegant settings

These shapes suit solitaire, pavé and traditional halo designs that never go out of fashion.

Best Diamond Shapes for Modern & Minimalist Rings

For a sleek, contemporary look:

Straight lines and simple, polished bands enhance the modern aesthetic.

Best Diamond Shapes for Vintage & Antique‑Inspired Rings

If you love Old Hollywood, Art Deco or antique styles:

  • Cushion cut
  • Asscher cut
  • Emerald cut
  • Marquise
  • Pear

Pair these shapes with milgrain details, filigree, halos, side stones and coloured metal (rose or yellow gold) for a true vintage feel.

Best Diamond Shapes for Active Lifestyles

If you work with your hands or live an active lifestyle, durability and practicality are key:

  • Round brilliant
  • Oval
  • Cushion with rounded corners
  • Radiant with trimmed corners

Avoid very sharp points and choose settings that protect the stone, like bezels or secure prongs. Round and cushion shapes are especially forgiving for everyday wear.

Best Diamond Shape for Different Finger Types

Best Diamond Shape for Small Hands

For smaller hands, medium‑sized stones with elongated or softly rounded shapes work best:

  • Oval
  • Pear
  • Cushion (especially slightly elongated)
  • Round (0.30–1.00ct range, depending on budget)

Choose slim, delicate bands to avoid overpowering the hand.

Best Diamond Shape for Short Fingers

To create the illusion of length, choose:

  • Oval
  • Pear (worn with the point towards the fingertip)
  • Marquise
  • Emerald or elongated radiant

Avoid very square shapes and extremely wide bands; they can make fingers look shorter.

Best Diamond Shape for Long Fingers

Long fingers can carry almost any diamond shape and carat size:

  • Round and oval are classic and balanced
  • Emerald, marquise and pear emphasise length for a dramatic look
  • Heart shapes and Asscher cuts make a bold, fashionable statement

You can also experiment with wider bands, split shanks and chunky designs.

Best Diamond Shape for Wider / Chubby Fingers

If you want a slimming effect and good coverage:

  • Oval
  • Marquise
  • Pear
  • Emerald / elongated radiant
  • Larger‑faced cushions

Avoid very small stones and extremely thin bands; a slightly wider band with a larger centre stone often looks more proportional.

Which Diamond Shape Sparkles the Most?

How Cut and Shape Affect Sparkle

Sparkle (also called brilliance and scintillation) is mainly determined by:

  • Cut quality – proportions, symmetry and polish
  • Facet pattern – brilliant vs step‑cut
  • Shape – how the facets are arranged within the outline

A well‑cut fancy shape can out‑sparkle a poorly cut round diamond, so always prioritise cut grade and overall light performance.

Sparkle Comparison: Round vs Oval vs Cushion vs Princess

In general, for popular engagement ring shapes:

  • Round brilliant: Highest overall sparkle and fire – the standard against which others are measured.
  • Princess & radiant: Very strong sparkle and scintillation, especially in well‑cut stones.
  • Oval & pear: Excellent brilliance, with occasional bow‑tie if cut poorly.
  • Cushion: Varies from strong “crushed ice” sparkle to a softer, antique glow.
  • Emerald & Asscher: Elegant flashes, but much less “twinkly” than brilliant cuts.

Which Diamond Shape Looks Biggest on the Finger?

Diamond Shapes That Look Bigger for Their Carat Weight

Some shapes give more face‑up area than others at the same carat weight. Generally, shapes that look largest for their weight are:

  • Oval
  • Marquise
  • Pear
  • Elongated radiant
  • Some elongated cushions

Round diamonds are balanced but don’t appear as large as these elongated shapes at the same carat.

Elongated Shapes That Maximise Finger Length

If you want to maximise both diamond size and finger length:

  • Choose an oval, marquise, pear, emerald or elongated radiant
  • Combine with a thin band and minimal side stones
  • Wear pear and marquise shapes with the point towards the fingertip for extra length

Diamond Shapes and Price in South Africa

How Diamond Shape Affects Price per Carat

Price per carat depends on both supply (how much rough can be cut into each shape) and demand (popularity).

  • Most expensive per carat: Round brilliant (due to high demand and more rough wastage when cutting).
  • Mid‑range: Oval, pear, marquise, princess, cushion, radiant.
  • Often better value: Emerald and Asscher cuts (though they may require higher clarity and colour, affecting total price).

Because cutters can use more of the rough diamond when cutting fancy shapes, they typically cost less per carat than comparable round diamonds.

Most Expensive Diamond Shapes

  • Round brilliant is consistently the most expensive common shape.
  • Rare fancy shapes in high carat weights and top‑tier quality (e.g. large, perfectly cut heart or Asscher diamonds) can also command premium prices.

Best‑Value / Cheapest Diamond Shapes

If you’re looking for the best value for money:

Diamond Shapes for Engagement Rings in South Africa

Popular Diamond Shapes Among South African Buyers

Across the South African market, the most sought‑after shapes are:

  • Round brilliant – still number one for classic engagement rings
  • Oval – especially in solitaire and halo settings
  • Cushion – particularly in halo and vintage‑inspired designs
  • Princess – popular for square modern styles
  • Emerald – favoured for understated, luxury looks

Example Price Ranges by Shape (in ZAR)

Exact pricing varies based on the 4Cs (cut, colour, clarity, carat), metal choice, setting complexity and rand‑dollar exchange rates, but broadly:

  • Entry‑level, smaller stones (±0.30–0.50ct) in popular shapes can start from low tens of thousands of rand in simple settings.
  • One carat round diamonds of good quality typically command a noticeable premium vs one carat ovals, cushions, princess or emerald cuts of similar grades.
  • Fancy shapes (especially oval, cushion, princess and radiant) often allow you to either:
    • Get a slightly larger diamond for the same budget, or
    • Maintain the same size with higher quality (better colour/clarity) at similar spend.

How to Choose the Right Diamond Shape for Your Engagement Ring

Matching Diamond Shape to Setting Style

Some shapes naturally work better with certain settings:

  • Solitaire: Round, oval, emerald, cushion, princess – almost any shape works.
  • Halo: Cushion, round, oval, pear, radiant, princess – halos enhance spread and sparkle.
  • Three‑stone: Emerald, oval, round, cushion – side stones can be tapered baguettes, pears or smaller rounds.
  • Vintage: Cushion, Asscher, emerald, marquise, pear – pair with milgrain, filigree and engraved details.

Think about whether you prefer a simple centre‑stone focus or extra side stones and detail.

Matching Diamond Shape to Personality & Lifestyle

  • Classic & traditional: Round, oval, emerald.
  • Modern & minimalist: Emerald, princess, elongated radiant, simple oval.
  • Romantic & vintage‑inspired: Cushion, Asscher, pear, marquise.
  • Bold & unique: Heart, marquise, large emerald or Asscher.

Active wearers should consider durable shapes and secure settings (round, cushion, oval with protective prongs or bezels).

Matching Diamond Shape to Budget

To optimise your budget:

  • If sparkle and tradition matter most and budget allows: round brilliant.
  • If you want a larger‑looking stone for the money: oval, pear, marquise, radiant, cushion.
  • If you want sophistication and value: emerald or Asscher (with appropriate clarity/colour).

Remember: cut quality should always come first – a smaller, well‑cut diamond will look more beautiful than a larger but poorly cut stone.

Diamond Shape FAQs

What is the best diamond shape for engagement rings?

There is no single “best” shape for everyone. The best diamond shape is the one that suits your style, finger type, lifestyle and budget. Round is the most popular and sparkliest; oval, cushion and princess offer excellent value and style; emerald and Asscher provide a sophisticated, vintage‑inspired look.

Which diamond shape sparkles the most?

The round brilliant cut typically sparkles the most due to its idealised facet pattern and proportions. Among fancy shapes, princess, radiant, oval and well‑cut cushions can also show very strong brilliance and fire.

Which diamond shape is most expensive?

Round brilliant diamonds are usually the most expensive shape per carat because of their high demand and the amount of rough diamond that is lost when cutting them.

Which diamond shape is cheapest?

There is no single “cheapest” shape, but princess, cushion, oval and radiant cuts generally offer better value per carat than round. Emerald and Asscher cuts can also be cost‑effective if you balance clarity and colour with your budget.

What diamond shape looks biggest on the finger?

Elongated shapes like oval, pear, marquise, elongated radiant and emerald generally look largest for their carat weight. Round diamonds look balanced but not as large face‑up as these shapes at the same carat.

What is the most popular diamond shape in South Africa?

Round brilliant diamonds remain the most popular engagement ring shape in South Africa, followed closely by oval and cushion cuts. Princess and emerald cuts are also common choices for modern and sophisticated styles.

What is the rarest diamond shape?

Truly rare shapes are less commonly cut and in lower demand, such as perfectly proportioned heart shaped diamonds and high‑quality Asscher cuts. Within any shape, large sizes and top‑grade colour and clarity are also rare and command premium prices.

Use this guide as a starting point to decide which diamond shape feels most “you”. Once you’ve narrowed down your favourites, compare actual stones side‑by‑side where possible and pay close attention to cut quality – it has the biggest impact on beauty, sparkle and overall value.