Diamond Shapes – The Ultimate Guide in 2025-2026

Table Of Contents

• Introduction  –  Why Diamond Shape Matters More Than You Think
• Diamond Shapes – List of 100 for 2025 (With Real Examples)
• Diamond Ring Shapes vs. Diamond Cut  –  What’s the Difference?
• Engagement Ring Diamond Shapes – Which Makes Her Finger Look Stunning?
• Lab-Grown Diamond Shapes at Saint Diamonds  –  Same Beauty, Amazing Choices
• Conclusion – Your Forever Starts With the Perfect Diamond Shape

Introduction  –  Why Diamond Shape Matters More Than You Think

One person said “yes” to a diamond and now the real pressure begins.

You’re staring at hundreds of sparkling diamonds, but they all look… different. Some are long and elegant, others perfectly round, a few look almost heart-shaped. Which one screams “forever”?

The truth most jewelers won’t tell you upfront: diamond shape is the #1 factor that determines how your ring looks on a hand  –  even more than carat size.

In this guide, written by diamond-shape specialists with many years in the industry, you’ll discover:

• The 100 most loved diamond shapes right now (2025 data)
• How each shape affects sparkle, finger appearance, and price
• Real photos and side-by-side comparisons
• Which shapes lab-grown diamonds let you choose
• Ready to find the one that makes her heart skip? Let’s dive in.

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Diamond Shapes – List of 100 for 2025 (With Real Examples)

There are many patented fancy shapes!

Here’s a proper list of 100 distinct, named diamond shapes (also called rhombus cuts or fancy diamond cuts) used in jewelry, lapidary, and design, each with a short description. These range from classic to rare and modern patented cuts.

1. Round Brilliant  –  The most popular diamond shape, 58 facets, maximum brilliance.
2. Princess Cut  –  Square modified brilliant, sharp corners, modern sparkle.
3. Cushion Cut  –  Square with rounded corners, soft pillow-like look, antique feel.
4. Emerald Cut  –  Rectangular step-cut with cropped corners, elegant hall-of-mirrors effect.
5. Asscher Cut  –  Square emerald cut with larger step facets and higher crown.
6. Radiant Cut  –  Rectangular or square with trimmed corners and brilliant faceting.
7. Oval Brilliant  –  Elongated round brilliant, appears larger than round of same carat.
8. Marquise Brilliant  –  Football-shaped, elongates the finger, maximizes carat weight.
9. Pear Brilliant (Teardrop)  –  One rounded end, one pointed, classic pendant shape.
10. Heart Shape  –  Ultimate romantic cut, symmetrical lobes and brilliant faceting.
11. Trilliant (Trillion)  –  Triangular with curved sides, usually brilliant-cut.
12. Triangular Brilliant  –  Equilateral triangle with brilliant facets.
13. Baguette  –  Long rectangular step-cut, often used as side stones.
14. Tapered Baguette  –  Baguette that narrows at one end.
15. Half-Moon  –  Semicircle with two straight edges, common side stone.
16. Shield Cut  –  Hybrid of pear and heart, broad top tapering to point.
17. Kite Shape  –  Diamond-shaped (rhombus) with two acute and two obtuse angles.
18. Lozenge Cut  –  Traditional rhombus outline, usually step-cut.
19. Old Mine Cut  –  Early cushion with smaller table, deeper pavilion, chunky facets.
20. Old European Cut  –  Early round brilliant, small table, high crown, open culet.
21. Rose Cut  –  Flat bottom, domed top with triangular facets (6 – 24 sides).
22. Double Rose Cut  –  Rose cut on both sides, no pavilion.
23. Portuguese Cut  –  Very elaborate brilliant with extra facet rows, 100+ facets.
24. Royal 144 Cut  –  144 – 149 facets, extreme brilliance, patented.
25. Leo Diamond  –  Patented brilliant with chevron facets visible under the table.
26. Gabi Tolkowsky Cut  –  100+ facet patented cut by the famous cutter.
27. Hearts & Arrows Round  –  Super-ideal round brilliant showing hearts and arrows pattern.
28. Starburst Cut  –  Extra facets radiating from culet like a star.
29. Flanders Brilliant  –  Historical square cut with brilliant faceting.
30. Barion Cut  –  Rectangular with half-moon facets on pavilion.
31. Quadrillion  –  Square/rectangular Kalef cut variant (now Radiant).
32. Crisscut  –  Patented cut with criss-cross facet pattern, extreme fire.
33. Lucere Cut  –  Modern patented cushion with unique facet alignment.
34. Augusta Cut  –  Patented brilliant with 94 facets.
35. Dream Cut  –  Patented by De Beers, cushion with star-like pattern.
36. Eternal Cut  –  81-facet patented round variant.
37. Sunflower Cut  –  Hexagonal with petal-like facets.
38. Dahlia Cut  –  66-facet patented round by Yuki Matsuda.
39. Royal Asscher  –  Updated Asscher with 74 facets (vs original 58).
40. Flamenco Cut  –  Tapered shape with fiery brilliant faceting.
41. Zephyr Cut  –  80-facet patented round.
42. Jubilee Cut  –  88-facet square/rectangular brilliant (1986 for 100th anniversary).
43. King Cut  –  127-facet patented round.
44. Magna Cut  –  91-facet patented brilliant.
45. Optima Cut  –  Patented oval with ideal proportions.
46. Princess 144  –  Princess with additional 144 facets.
47. Radiant Star  –  Early name for some radiant cuts.
48. Trillian Cut  –  Curved triangular brilliant (variant of trillion).
49. Bullet Shape  –  Long tapered marquise variant.
50. Horsehead Cut  –  Rare marquise variant with flat tip.
51. Cadiz Cut  –  Spanish patented brilliant.
52. Amour Cut  –  Heart-shaped with extra crown facets.
53. Briolette  –  Fully faceted teardrop, no table, drilled top.
54. Bullet Briolette  –  Elongated briolette.
55. Table Cut  –  Ancient cut: flat top, flat bottom, faceted girdle.
56. Single Cut  –  16 – 18 facets, used on very small melee diamonds.
57. Swiss Cut  –  33 – 34 facet small brilliant.
58. Eight Cut  –  8 main facets top + 8 bottom, tiny stones.
59. Mirror Cut  –  Step-cut with very wide facets.
60. Hexagonal Brilliant  –  Six-sided outline with brilliant faceting.
61. Octagonal Step Cut  –  Like emerald but eight-sided.
62. Bullet Cut  –  Long triangle with rounded top.
63. Epaulette  –  Long rectangular with angled ends.
64. Trapezoid Brilliant  –  Common side stone for radiant/emerals.
65. French Cut  –  Small triangular or square stones with deep pavilion.
66. Carré Cut  –  Square step-cut.
67. Calypso Cut  –  Flower-inspired patented cut.
68. Mariposa Cut  –  Butterfly-shaped diamond.
69. Star of Africa Cut  –  Used on some Cullinan diamonds (mixed).
70. Trans Hex Cut  –  South African 88-facet design.
71. Four-Point Star  –  Star-shaped with four arms.
72. Eight-Point Star  –  Classic star diamond.
73. Twelve-Point Star  –  Rare star cut.
74. Flower Cut  –  Petal-like facets around center.
75. Windmill Cut  –  Dutch-inspired four-blade pattern.
76. Quadrillion Cushion  –  Rare cushion variant.
77. Bezel Cut  –  Faceted dome, no table.
78. Cabochon Diamond  –  Rare smooth domed diamond (usually for star effect).
79. Pendeloque  –  Pear-shaped with elongated point.
80. Scissor Cut  –  Long marquise with very sharp ends.
81. Lariat Cut  –  Extremely long marquise variant.
82. Nova Cut  –  Modern high-performance brilliant.
83. Spirit Sun Cut  –  91-facet patented round.
84. Miracle Cut  –  102-facet round.
85. Empress Trillion  –  Curved trillion with extra facets.
86. Concave Cut  –  Facets cut inward for unique light play.
87. Prism Cut  –  Multi-faceted elongated shape.
88. Vortex Cut  –  Spiral-like facet pattern.
89. Infinity Cut  –  Figure-eight shaped diamond.
90. Crescent Cut  –  Half-moon variant with curved facets.
91. Rhomboid Cut  –  Elongated rhombus.
92. Arrow Cut  –  Chevron-shaped diamond.
93. Chevron Cut  –  V-shaped with brilliant faceting.
94. Bullet Marquise  –  Marquise with flat point.
95. Kite Brilliant  –  Kite-shaped with brilliant faceting.
96. Loaf Cut  –  Rectangular cushion with rounded edges.
97. Coffin Cut  –  Octagonal with elongated shape.
98. Mosaic Cut  –  Step-cut with geometric pattern.
99. Regal Radiant  –  Enhanced radiant with more facets.
100. Signature Cut  –  Any designer’s unique proprietary diamond shape.

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Diamond Ring Shapes vs. Diamond Cut  –  What’s the Difference?

This confuses 90% of buyers.

• Shape = the outline you see from above (round, oval, etc.)
• Cut = how the facets are arranged and polished (brilliant, step, mixed)

A round diamond is always a shape. “Round brilliant” is the cut style that gives it maximum sparkle. You can have a poorly cut round diamond that looks dull  –  shape alone isn’t enough.

Pro tip: Always check the cut grade (Excellent/Ideal) on the certificate, no matter the shape.

Engagement Ring Diamond Shapes – Which Makes Her Finger Look Stunning?

The #1 secret women search for but are too shy to ask.

Elongated shapes create the longest, slimmest illusion:

1. Oval
2. Marquise
3. Pear
4. Radiant (rectangular)
5. Emerald (rectangular)

Round and princess can make fingers look shorter/wider on some hands  –  but they sparkle the most.

Lab-Grown Diamond Shapes at Saint Diamonds  –  Same Beauty, Amazing Choices