Traditional Diamond Shapes


Diamonds come in a wide variety of shapes — each with its own charm, brilliance, and symbolism. Whether you prefer timeless elegance or bold uniqueness, choosing the right diamond shape is one of the most personal decisions when selecting a ring.

Here are the most popular diamond shapes:

  • Round – Classic round brilliant with 57 or 58 facets. Known for unmatched sparkle and timeless appeal.
  • Oval – An elongated shape that creates the illusion of longer, slender fingers.
  • Princess – A modern square or rectangular cut with sharp angles and exceptional brilliance.
  • Radiant – A hybrid of emerald and round shapes, with trimmed corners and brilliant faceting.
  • Asscher – A step-cut, octagonal shape known for vintage glamour and symmetry.
  • Emerald – Rectangular with long, step-cut facets. Elegant and architectural.
  • Pear – A teardrop shape that blends the best of round and marquise styles. Feminine and graceful.
  • Marquise – A pointed oval, originally designed for French royalty. Maximises perceived size.
  • Cushion – Soft, pillow-like edges. Romantic and vintage-inspired.
  • Heart – A symbol of love, best suited for the bold and romantic.
  • Trillion – Triangular shape with sharp edges. Unique and modern.
  • Baguette – Rectangular and narrow, often used as side stones or in Art Deco-inspired designs.


Diamond Weight (Carat)

Diamond weight is measured in carats (ct) — where 1 carat equals 0.2 grams. The word “carat” comes from carob seeds, once used as natural weight standards due to their uniform size.

Key facts about diamond carat:

  • Larger diamonds are much rarer, which significantly increases their price.
  • A 1.00 ct diamond can cost much more than a 0.90 ct, even if visually similar, due to carat "milestones."
  • Sometimes, larger rough diamonds are cut into smaller stones to achieve better clarity and brilliance.
  • Choosing the right diamond means balancing size, quality, and budget — and sometimes, slightly smaller carat with better cut offers more sparkle and value.

Let your diamond shape and size reflect your personality — whether you're drawn to timeless classics or bold expressions of individuality.

Need help choosing your diamond? Contact our experts at info@onemodiamond.com — we’re here to assist you with care and expertise.