Diamond Shapes Explained: Which Engagement Ring Cut Is Right for You?

June 26, 2025
Diamond Shapes Explained

Diamond shape is the first thing most people notice about an engagement ring—and one of the most personal choices in the entire process. It affects not only how the ring looks, but also how big the diamond appears, how much it costs, and how it complements the wearer’s hand. In this guide, we break down the most popular diamond shapes for engagement rings, including their pros, cons, style personality, and budget considerations. 

What’s the Difference Between Shape and Cut? 

  • Shape refers to the outline of the diamond (e.g., round, oval, pear) 
  • Cut refers to the quality of proportions and light performance (e.g., excellent, very good) 

Most Popular Diamond Shapes (With Personality Match) 

1. Round Brilliant 

Look: Perfectly symmetrical, maximum sparkle 
Pros: Most brilliant cut, timeless, always in style 
Cons: Typically most expensive shape per carat 
Best For: Classic romantics, traditional elegance 
Budget Tip: A 0.90 ct round can look nearly identical to a 1.00 ct—at lower cost 

 2. Oval 

Look: Elongated and elegant, with brilliant sparkle 
Pros: Finger-lengthening, appears larger than round of same carat 
Cons: Bowtie effect if poorly cut 
Best For: Modern romantics, trendy but timeless 
Budget Tip: Ovals can appear 10–15% larger face-up than rounds 

3. Emerald 

Look: Step-cut, hall-of-mirrors effect, sophisticated 
Pros: Understated glam, larger surface area 
Cons: Less brilliance than brilliant cuts; clarity must be high 
Best For: Vintage lovers, minimalists, confident dressers 
Budget Tip: Focus on VS1 or better clarity to maintain visual crispness 

4. Cushion 

Look: Soft, pillow-like square or rectangle 
Pros: Romantic, warm sparkle, great in halos 
Cons: Can look smaller than other shapes of same carat 
Best For: Sentimental, whimsical personalities 
Budget Tip: Cushion cuts often cost less per carat than rounds or ovals 

5. Princess 

Look: Sharp corners, square silhouette 
Pros: Great brilliance, modern feel, geometric 
Cons: Corners can chip if not protected in setting 
Best For: Edgy, trend-conscious shoppers 
Budget Tip: Slightly smaller face-up than round, but more affordable per carat 

6. Pear 

Look: Teardrop shape, bold and flattering 
Pros: Unique look, elongates the finger 
Cons: Off-center symmetry or poor polish shows easily 
Best For: Non-traditionalists, bold romantics 
Budget Tip: Go for a bezel or halo setting to protect the pointed tip 

7. Radiant 

Look: Like a hybrid of emerald and round—sparkly and structured 
Pros: Fire and brilliance, durable corners 
Cons: Not as well-known, fewer certified options 
Best For: Statement-makers, glam lovers 
Budget Tip: Offers round-like sparkle at a lower price point 

8. Asscher 

Look: Square emerald-style cut, deep and art deco 
Pros: Architectural, clean symmetry 
Cons: Needs excellent clarity; appears smaller than other shapes 
Best For: Vintage fans, old-world glamour 
Budget Tip: Works best in solitaire or bezel settings to amplify shape 

 9. Marquise 

Look: Pointed ends, elliptical silhouette 
Pros: Longest shape for the weight, very flattering 
Cons: Easily chips at tips without protection 
Best For: Fashion-forward buyers, regal energy 
Budget Tip: Looks larger than any other shape per carat—amazing value 

10. Heart 

Look: The ultimate romantic symbol 
Pros: Rare, eye-catching, instantly recognizable 
Cons: Hard to cut well, requires large size to show shape 
Best For: Sentimental or bold personalities 
Budget Tip: Choose a size over 0.75 ct to ensure the shape reads clearly 

Factor 

Shape Tips 

Finger shape/size 

Oval, pear, and marquise elongate the hand 

Lifestyle 

Round, bezel-set cushion, and radiant = durable 

Budget 

Cushion, oval, and pear offer great value per carat 

Personality 

Round = classic; emerald = sophisticated; heart = bold 

Your engagement ring’s shape should reflect your style, your story, and how you want your diamond to show up in the world. Whether you're drawn to the timeless sparkle of a round or the bold geometry of an emerald cut, the perfect shape is the one that feels like you. Watch the video below to learn which engagement ring cut is right for you.