An elongated cushion cut diamond is a stunning blend of vintage charm and modern elegance. It features the soft, curved edges of a cushion cut, but with an elongated shape, creating a larger and more sophisticated look. This cut is perfect for those who love the romantic feel of a cushion cut but want a diamond that appears bigger and more elegant on the finger.
If you’re considering an elongated cushion cut diamond, here’s everything you need to know before making a purchase.
1. What is an Elongated Cushion Cut Diamond?
An elongated cushion cut diamond has a length-to-width ratio greater than 1.10, giving it an oval-like appearance while maintaining the classic cushion cut’s rounded edges and brilliant facets.
Key Features:
✔ Soft, curved edges – Prevents chipping and adds a vintage appeal.
✔ Elongated shape – Creates the illusion of a larger diamond.
✔ Brilliant faceting – Maximizes sparkle and fire.
Unlike a traditional cushion cut, the elongated version provides better finger coverage, making it a popular choice for engagement rings.
2. Why Choose an Elongated Cushion Cut?
The elongated cushion cut is an ideal choice for those who want a unique, elegant diamond with maximum brilliance.
Top Benefits:
- Bigger Appearance: Covers more surface area than a square cushion cut.
- Slenderizing Effect: Makes fingers look longer and more graceful.
- Vintage & Modern Blend: Combines classic charm with a contemporary touch.
- Great Sparkle: The brilliant faceting hides inclusions well.
💡 Pro Tip: If you love the look of an oval diamond but prefer softer edges, the elongated cushion cut is the perfect alternative!
3. Ideal Length-to-Width Ratio
The length-to-width ratio determines how elongated the cushion cut will appear.
- 1.10 – 1.15: Slightly elongated, still retains a cushion-like shape.
- 1.20 – 1.30: Noticeably elongated, more elegant and modern.
💡 Pro Tip: A 1.20+ ratio gives a more distinct elongated shape, while 1.10 – 1.15 offers a subtle stretch.
4. Best Cut Quality for Maximum Sparkle
While the GIA (Gemological Institute of America) does not assign a cut grade to cushion cut diamonds, you can evaluate quality based on proportions.
Recommended Cut Proportions:
- Depth: 61% – 67% (Too deep = less sparkle and a smaller appearance).
- Table: 58% – 65% (Balances brilliance and face-up size).
- Polish & Symmetry: Always choose Excellent or Very Good grades.
💡 Avoid cushion cut diamonds with extra deep pavilions, as they can reduce brilliance.
5. Choosing the Right Clarity & Color
The brilliant faceting of an elongated cushion cut helps hide inclusions, making it a great choice if you want to save on clarity.
Recommended Clarity Grades:
- VS1 – VS2: Nearly flawless to the naked eye.
- SI1: Budget-friendly option with minimal visible inclusions.
- IF – VVS2: Highest clarity but often unnecessary due to the diamond’s faceting.
For color, the elongated cushion cut tends to hold more color than round diamonds, so choosing the right grade is important.
Recommended Color Grades:
- D – F: Completely colorless, best for white gold/platinum.
- G – H: Great balance of whiteness and value.
- I – J: Slight warmth, ideal for yellow or rose gold settings.
💡 Pro Tip: If you’re setting your diamond in yellow or rose gold, an H–J color can save money while still looking great.
6. Best Settings for an Elongated Cushion Cut Diamond
The right setting enhances the beauty and brilliance of an elongated cushion cut diamond.
Top Setting Choices:
- Solitaire: Classic and timeless, perfect for showcasing the diamond’s shape.
- Halo: Adds extra sparkle and makes the diamond appear larger.
- Three-Stone: Adds side stones for extra brilliance and width.
- Hidden Halo: A subtle way to enhance sparkle without overpowering the shape.
💡 Pro Tip: A halo or three-stone setting can make your elongated cushion cut appear even larger!
7. Carat Weight & Appearance
One advantage of the elongated cushion cut is that it looks larger than a traditional cushion cut of the same carat weight.
- 1.00-carat elongated cushion cut may look closer to a 1.20-carat round diamond.
- 1.50-carat elongated cushion cut has better finger coverage than a square cushion of the same weight.
💡 Pro Tip: If you want a bigger-looking diamond without paying for extra carat weight, an elongated cushion cut with a slightly shallower depth is a great choice.
8. Fluorescence: Does It Matter?
Fluorescence can impact the diamond’s appearance under UV light.
- Faint to Medium Fluorescence: Can make lower-color diamonds (G–J) appear whiter.
- Strong Fluorescence: Might create a hazy effect in some diamonds.
💡 Pro Tip: If buying a G–J color elongated cushion cut, medium fluorescence can enhance whiteness and save money.
9. Where to Buy an Elongated Cushion Cut Diamond
When purchasing an elongated cushion cut diamond, always buy from a trusted jeweler who offers:
- GIA Certification – Ensures quality and authenticity.
- High-Resolution Images & Videos – Helps inspect clarity and brilliance.
- Flexible Return Policies – Provides security in case you need an exchange.
💡 Pro Tip: Always compare multiple diamonds side by side to evaluate sparkle, shape, and clarity before making your final decision.
Final Thoughts: Is an Elongated Cushion Cut Right for You?
If you want a diamond that combines soft, romantic curves with a modern elongated shape, an elongated cushion cut diamond is a perfect choice.
✔ Elegant and unique
✔ Appears larger than square cushion cuts
✔ Offers vintage charm with a modern touch
✔ Brilliant sparkle with hidden inclusions
Whether you prefer a solitaire, halo, or three-stone setting, an elongated cushion cut ensures a breathtaking and sophisticated look for any piece of jewelry. 💎✨
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