Different Diamond Shapes
One of the most exciting parts of choosing a diamond—whether for an engagement ring, pendant, or pair of earrings—is selecting its shape. Diamond shape doesn’t just affect how a stone looks; it also plays a key role in how it reflects light, how it fits into a setting, and how it reflects your personal style.
At Seita Jewelers in Tarentum, PA, we’ve helped generations of families discover the shape that speaks to them. From timeless classics to bold modern cuts, this guide will help you explore the most popular diamond shapes and understand how each one brings out a different kind of beauty.
What’s the Difference Between Diamond Shape and Diamond Cut?
Before we dive into the shapes themselves, let’s clear up a common question.
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Diamond shape refers to the outline or silhouette of the stone—round, oval, square, etc.
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Diamond cut refers to the quality of the stone’s faceting and how well it reflects light.
While shape defines the diamond’s overall appearance, cut impacts its sparkle—both are important when choosing the right stone for your ring or custom design.
Round Brilliant Cut
The Most Classic—and Sparkling—Shape
The round brilliant cut is by far the most popular diamond shape, and for good reason. With 58 precision-cut facets, it’s engineered for maximum light return and dazzling brilliance.
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Ideal for: Traditional solitaires, halos, and timeless engagement rings
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Symbolizes: Wholeness, commitment, and timeless love
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Available in: Lab-grown or natural-mined diamonds
Discover round brilliant diamonds in our custom engagement ring collection, available in platinum, white gold, yellow gold, or rose gold.
Princess Cut
Modern Sparkle with a Crisp Edge
The princess cut is a square-shaped diamond with pointed corners and excellent brilliance. It’s a contemporary favorite that balances fire and symmetry beautifully.
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Ideal for: Modern or vintage-inspired settings
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Symbolizes: Elegance, strength, and individuality
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Often featured in: Channel-set or three-stone designs
Tip: A princess cut looks stunning in white gold or platinum for extra contrast and brilliance.
Oval Cut
A Slender, Elegant Twist on Tradition
The oval cut offers the sparkle of a round diamond, but with an elongated shape that flatters the finger. It’s a graceful choice that’s grown rapidly in popularity.
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Ideal for: Solitaires, halos, or east-west settings
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Symbolizes: Individuality and creativity
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Bonus: The elongated shape can make the diamond appear larger
Ask us about custom oval engagement rings at Seita Jewelers—crafted with the center stone of your choice.
Cushion Cut
Soft, Romantic, and Vintage-Inspired
A cushion cut features rounded corners and larger facets, blending old-world charm with soft sparkle. It's ideal for vintage-style rings or romantic custom pieces.
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Ideal for: Halo settings, antique designs, and colored gemstone accents
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Symbolizes: Romance, softness, and warmth
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Available in square or rectangular versions
This shape shines in rose gold or yellow gold for a warm, vintage aesthetic.
Emerald Cut
Sleek, Sophisticated, and Architectural
The emerald cut is known for its step facets and mirror-like clarity. It showcases a diamond’s transparency more than its sparkle, making quality all the more important.
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Ideal for: Elegant solitaires and three-stone rings
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Symbolizes: Confidence, depth, and refinement
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Best for: Those who prefer understated glamour
A beautifully cut emerald diamond offers a look that’s less about sparkle and more about quiet sophistication.
Marquise Cut
Bold, Elongated, and Eye-Catching
With pointed ends and a long, narrow shape, the marquise cut creates a dramatic look and makes the finger appear longer and slimmer.
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Ideal for: Unique solitaires or vintage-inspired settings
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Symbolizes: Boldness and drama
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Often paired with: Accent stones or tapered baguettes
This shape is perfect for someone who wants a ring that feels one-of-a-kind.
Pear-Shaped Diamond
A Delicate Teardrop with Distinct Personality
Combining the round and marquise shapes, the pear-shaped diamond (or teardrop) is both elegant and distinctive. Its asymmetry creates a dynamic, graceful look.
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Ideal for: Statement rings and halo settings
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Symbolizes: Emotion, individuality, and elegance
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Can be worn: Point-up or point-down for personal preference
A popular choice for brides who want something artistic and slightly unconventional.
Radiant Cut
Brilliance Meets Structure
The radiant cut offers the square or rectangular shape of the emerald cut, but with brilliant-cut facets that provide more sparkle. It’s ideal for those who want structure without sacrificing fire.
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Ideal for: Glamorous halo rings or side-stone settings
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Symbolizes: Passion and brilliance
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Best suited for: Bold, sparkle-loving personalities
Asscher Cut
Vintage Sophistication with Geometric Flair
A close cousin to the emerald cut, the Asscher cut is square with step facets and a deep pavilion. It creates a mesmerizing “hall of mirrors” effect.
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Ideal for: Art Deco or vintage-style rings
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Symbolizes: Classic elegance and quiet luxury
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Looks best in: High-quality stones with excellent clarity
This cut offers a unique alternative for couples who appreciate craftsmanship and geometry.
Heart-Shaped Diamond
Romantic and Playful
The heart-shaped diamond is unmistakable in symbolism and makes a bold, emotional statement. Though less common, it's cherished for its sentiment and charm.
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Ideal for: Promise rings, anniversary gifts, or unique engagement rings
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Symbolizes: Love, affection, and romance
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Works well in: Solitaires or delicate halo settings
This shape is perfect for someone who wants their ring to tell a love story all its own.
How to Choose the Right Diamond Shape for You
When choosing a diamond shape, consider:
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Personal style – Do you love vintage charm, modern lines, or classic simplicity?
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Hand and finger shape – Elongated shapes can flatter and lengthen the look of the finger.
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Lifestyle – If you’re active, you might prefer rounded shapes or low-profile settings that won’t snag.
At Seita Jewelers, we’ll guide you through these choices with care and expertise. Whether you're choosing a shape for an engagement ring or redesigning a family heirloom, we’ll help you create a piece that fits beautifully and lasts a lifetime.
Diamond Shape Questions That Spark Conversations
Which Diamond Shape Looks the Biggest?
Oval, marquise, and pear shapes often appear larger per carat because of their elongated surface area.
What’s the Most Sparkly Diamond Shape?
The round brilliant offers the most sparkle due to its facet structure and ideal proportions.
Can I Mix Shapes in a Custom Design?
Absolutely. Many clients pair a round center stone with baguette or pear side stones to create balance and visual interest.
Final Thoughts: Shape Sets the Tone
A diamond’s shape is more than just a detail—it’s a reflection of personality, emotion, and the story behind your jewelry. Choosing the right one adds not only brilliance, but meaning.
At Seita Jewelers, we take the time to understand what you're looking for and guide you through the entire process—from shape selection to custom settings. Whether you're starting from scratch or redesigning something special, our family is here to help yours celebrate life’s most meaningful moments.
Visit Seita Jewelers in Tarentum, PA
Stop by our showroom to explore a curated selection of natural-mined and lab-grown diamonds, or design your custom engagement ring with help from our experienced team.
215 E 6th Avenue, Tarentum, PA 15084
(724) 224-9114
info@seitajewelers.com
Discover your diamond shape—and the setting that brings it to life.