Diamond Education
Buy a Diamond with Confidence
Understanding a diamond's key characteristics helps you find the perfect stone for your budget and style. Explore each topic below to become a confident, informed buyer.
Diamond Shape
Shape is the overall outline of a diamond when viewed from the top — one of the most personal choices you'll make. While it does not directly affect the grading scale, it defines the diamond's entire character and personality.
Round
The most popular and researched shape, offering maximum brilliance through its optimized 58-facet design.
Ratio: N/A — circular by definition
Best for: Solitaires, halos, pavé bands
Princess
The top-selling non-round shape. Square with pointed corners delivering brilliant sparkle in a modern form.
Ratio: 1.00–1.05 square · >1.10 rectangular
Best for: Modern solitaires, three-stone rings
Emerald
Step-cut rectangular shape with large open facets giving a luminous 'hall of mirrors' clarity effect.
Ratio: 1.28–1.42 for classic proportions
Best for: Art Deco styles, three-stone settings
Asscher
Square step-cut with deep cropped corners. A royalty-inspired shape of timeless vintage elegance.
Ratio: 1.00–1.05 for true square
Best for: Vintage settings, halo designs
Oval
Mirrors round brilliance while appearing larger per carat. The elongated form beautifully flatters the finger.
Ratio: 1.30–1.68 for traditional proportions
Best for: Solitaires, finger-lengthening settings
Marquise
An elongated boat shape that maximizes carat weight, making diamonds look larger than their actual weight.
Ratio: 1.75–2.25 for traditional proportions
Best for: Budget-stretching, elongating the finger
Pear
A teardrop-shaped brilliant combining the best of round and marquise. Elegant in any jewelry style.
Ratio: 1.45–1.75 for traditional proportions
Best for: Pendants, earrings, east-west settings
Radiant
Trimmed corners give this cut remarkable versatility — maximum brilliance in a square or rectangular form.
Ratio: 1.00–1.05 square · >1.10 rectangular
Best for: Modern settings, baguette side stones
Cushion
The classic 'pillow cut' — popular for over a century. Rounded corners and large facets create irresistible sparkle.
Ratio: 1.00–1.05 square · >1.15 rectangular
Best for: Romantic and vintage-inspired settings
Heart
The ultimate symbol of love. A distinctive brilliant cut for an unforgettable romantic statement.
Ratio: 0.90–1.15 for balanced proportions
Best for: Romantic gifts, pendants, solitaire rings
◆ Expert Tip
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