Elongated Cushion Cut Cubic Zirconia Cathedral Solitaire Engagement Ring

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SKU: R1002EC
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Our elongated cushion cut laboratory grown diamond alternative cubic zirconia cathedral solitaire engagement rings blend the traditional Tiffany style solitaire with a graceful, vaulted shank. Both sides of the shank elegantly angle upwards and approach the brilliant elongated cushion cut center creating an elevated design element to that of the classic engagement ring style. The elongated cushion cut is sometimes referred to as a cushion emerald cut or cushion oval shape. In actuality, the elongated cushion cut is a combination of many shapes. It has the brilliance of a round or princess cut, and elements of the oval, emerald cut and cushion cut silhouettes. The elongated cushion cut is a shape that is normally reserved for premium and higher grade natural diamonds and larger diamonds, providing a delicate balance between its sparkling facets and softly curved sides. The center stone in this cathedral solitaire stone is set in a very durable die struck, four prong head, ensuring that your center stone is secure and protected while allowing maximum light for brilliance. The shank of this engagement ring is slightly rounded and measures approximately 2.5mm at its widest point with a slight taper towards the bottom. Wider 3mm, 4mm and 5mm versions available via special order. The cathedral solitaire is stunningly beautiful when worn alone or coupled with a gold or platinum comfort fit band, simulated diamond band, or man-made colored stone band of your choice. The height of the cathedral shank allows for most eternity bands and anniversary bands to sit more flush against the solitaire. Each elongated cushion cut cathedral solitaire features the finest high quality, hand cut and hand polished Russian formula lab grown diamond look cubic zirconia, cut to exact mined diamond specifications. These elongated cushion cut cathedral solitaires are available in a myriad of carat size center stones as well as various precious metals like 14k, 18k solid gold and platinum. See below for the detailed features on this classic elongated cushion cut diamond look solitaire engagement ring and why people turn to Ziamond for the best lab grown diamond alternatives with a lifetime guarantee. 


  • Large selection of carat sizes available, see menu options - .75 ct. 6x4mm, 1 ct. 7x5mm, 1.50 ct. 8x6mm, 2.50 ct. 9x7mm, 4 ct. 10x8mm, 5.50 ct. 11x9mm, 7 ct. 12x10mm, 9 ct. 14x10mm, 12 ct. 14x12, 15 ct. 16x12mm, 20 ct. 18x13mm
  • 4 prong die struck head for superb strength and durability
  • 2.5mm shank at widest point, tapers slightly toward bottom - 3mm, 4mm and 5mm shank widths also available
  • Cut and polished to genuine mined diamond specifications
  • 14K white gold, 14k yellow gold, 14K rose gold, 18K gold or Platinum metal options
  • Matching and complimentary bands also available
  • Designed and crafted in the USA
  • Finger sizes below a 5 and above an 8 are available via special order
  • Customize this design with any shape, carat size or color of gem via special order - simply call, live chat or email us 
  • Questions? Live Chat with representatives or call 1-866-942-6663

The Ziamond Distinction

  • Lifetime Guarantee on all Ziamond gems
  • Finest high quality hand cut, hand polished Russian formula lab grown diamond look cubic zirconia
  • Comprehensive Jewelry Warranty
  • All Ziamond jewelry mountings are the same as fine diamond jewelry mountings
  • All jewelry is designed, hand crafted and serviced exclusively by Ziamond
  • Customize any jewelry design - simply call, live chat or email us 
  • Jewelry available in various colors or shapes of lab created stones - white diamond look, canary yellow diamond look, pink diamond look, red ruby, blue sapphire and green emerald
  • Wear, care and clean like genuine mined diamond fine jewelry
  • Over 100 years combined fine jewelry experience, on-line for more than 20 years 
  • Experienced and knowledgable staff ready to assist with your questions or custom designs
3 reviews
  • Beautiful shape 5

    Posted by Ranya G. on Aug 6th 2022

    The cathedral solitaire was the perfcet type of setting for my cushion. cut. They compliment one another so well. I wear this ring daily and receive many compliments.

  • Quite satisfied 5

    Posted by Vivianne O'Rourke - Needham Ma. on Mar 11th 2022

    I love the fact that this is not a shape you see everywhere. It's very unique and very stunning. The ring is made very well, not too thin, but just wide enough not to be bulky because I wear it with my diamond band. I use a regular jewelry cleaner from Target and it cleans right up. I've had it now for a few years and still looks great.

  • The perfect shape for me 5

    Posted by Ginnie Valencia on Jan 6th 2022

    I was waffling between a radiant cut or the elongated cushion cut and I'm very happy with the choice I made of this ring. Mine was a 4carat special order and made for me in a finger size 9 and took about three weeks. The quality is really evident. It was worth the wait. I want to get the elongated cushion cut eternity band now, but I have to save up.

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