Gemstone cuts: shapes, meaning & effect and value

Why is the cut of gemstones so important?

The cut of a gemstone determines not only its visual beauty but also its value. Only through the targeted, precise (or "carving in stone") processing—cutting and polishing—is the "fire," the characteristic sparkle and brilliance of a gemstone fully brought to the fore. Especially with diamonds and colored gemstones like rubies, sapphires, and emeralds, the cut plays a crucial role in terms of light refraction, brilliance, and therefore, price.

The history of gemstone cutting – from rough stone to art form

Until the 15th century, gemstones were primarily polished, not faceted. Particularly hard stones such as diamond, corundum (ruby, sapphire), and beryl (emerald, aquamarine) were extremely difficult to work. It was only with the discovery of the so-called "rose cut" in the Middle Ages that deliberate shaping began – a milestone in the art of gemstone cutting.

Overview of common gemstone cuts

Here are the most well-known cut types that play a role in both jewelry making and gemstone investment:

brilliant cut

  • The ideal shape for diamonds

  • 57 or 58 facets

  • Maximum light reflection = highest sparkle

  • Highest resale value for diamonds

emerald cut

  • Rectangular shape with stepped edges (stair-cut finish)

  • Designed for emeralds – reduces stress and minimizes breakage risk

  • Elegant, clean look; popular with diamonds 10 ct and above.

Oval cut

  • Faceted cut with an elongated round shape

  • Emphasizes the color and size of the stone

  • Highly sought after for rubies and sapphires

Cushion cut

  • Soft, rounded corners with a square or rectangular base

  • Popular with colored stones and vintage jewelry

  • Solid choice in the investment sector

Pear cut

  • Combination of round and pointed shape – teardrop-shaped

  • It looks feminine, flowing and elegant

  • Popular for pendants and earrings, less so in the investment sector.

Heart-shaped

  • A symbol of love and romance, popular for jewelry (pendants, rings)

  • More difficult to grind, therefore less common

  • Rarely sought after as an investment

Marquise cut

  • "Boat-shaped"; thin oval, tapering to a point at both ends.

  • Historical cut with French origin

  • Visually lengthening effect on the stone

Princess cut

  • Square with many facets

  • Popular for modern engagement rings

  • A little more sensitive at the corners

Special shapes: Trilliant, Baguette & Cabochon

Trillion

  • Triangular faceted cut, often used for accent stones

  • Modern and eye-catching – ideal for designer pieces

Baguette

  • Rectangular with clean lines and few facets

  • Often used for diamonds as side stones in rings

Cabochon

  • No facets, but a curved, polished surface.

  • Ideal for opaque stones such as moonstone, opal or star sapphire

  • Especially suitable for asterism (star effect) or chatoyancy (cat's eye effect)

Gemstone cuts and their role in the investment sector

Not every cut is equally valuable – especially in the investment sector, standardization is crucial:

  • Ruby & Sapphire: Oval and cushion cuts are traditionally the most sought after; octagonal and round cuts command higher prices.

  • Emerald: Emerald cut is considered standard; round, oval and cushion cuts are also in demand.

  • Diamond: The brilliant cut is the benchmark. Other cuts have discounts of up to 30%.

  • Fancy Diamonds: Colored diamonds can have any cut – the main thing is that color and brilliance are maximized.

Which grind is the right one?

The choice depends on:

  1. Raw stone: Uniform color, shape, size, inclusions and crystal structure

  2. Intended use: Jewelry vs. Investment vs. Collector's item

  3. Buyer expectations: Market preferences play a major role in resale value; a classic finish is always in demand.

Conclusion: The finish makes the difference

Whether brilliant or cabochon – the right gemstone cut determines brilliance, aesthetics, and market value. Anyone buying gemstones should never leave the cut to chance – it is the key to beauty and a crucial factor in the value of high-quality stones.

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