Cushion Cut Square Cubic Zirconia Cathedral Solitaire Engagement Ring

5 reviews Write a Review
SKU: R1002C
Hurry! Only left

Free Shipping

US Orders Over $100

Buy Now, Pay Later

Financing Available!

Cut To Diamond Specifications

Hand Cut & Hand Polished!

Lifetime Guarantee

On All Ziamond Gems

Our 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 cushion cut center creating an elevated design element to that of the classic engagement ring style. The cushion cut square shape blends the softness of the round with the geometry of a princess cut square, resulting in a magnificent creation of a soft sided, pillow shaped brilliant bauble. Each cushion cut solitaire is hand made to order and 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 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 cushion cut cathedral solitaires are available in an array of carat size center stones, as well as various precious metals, like 14k and 18k solid gold and platinum. See below for the detailed features on this classic cushion cut diamond look solitaire engagement ring and why people turn to Ziamond for the best lab grown diamond simulants with a lifetime guarantee. 


  • Large selection of carat sizes available, see menu options - 1 ct. 6mm, 1.50 ct. 7mm, 2.50 ct. 8mm, 4 ct. 9mm, 5.50 ct. 10mm, 7 ct. 11mm, 8.50 ct. 12mm, 10 ct. 13mm
  • 104 sparkling facets, square shape with rounded corners
  • 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
5 reviews
  • So happy with Ziamond 5

    Posted by Cameron - Raleigh, NC on Mar 11th 2022

    First, let me say this ring looks amazing and very much like a real diamond. The quality of the setting is better than the diamond rings I was shopping for locally. Ziamond was nice to deal with and I received the ring in about a week and a half. Not to mention, I literally saved thousands of dollars. Thank you for providing a great product that looks amazing!

  • AAAAA 5

    Posted by Roseann on Sep 3rd 2018

    Purchased a 1.5 carat Ziamond ring in 14kt gold. the ring was amazing. everyone thinks my husband spent his retirement on my ring ha ha ( only we know the truth ) i hear compliments on my ring every day. why spend all that money on the real thing when you can get a great look a like with a small price. i give everyone that works for and with ziamonds an AAAAA . looking forward to more purchases keep up the great work.

  • Nice stone 5

    Posted by Kevan on Oct 31st 2013

    Looks really good in the white gold and I really liked the cut of the stone.

  • OMG 5

    Posted by Miriam on Oct 22nd 2012

    I just got my order today and as my famous designer,decorator, Jay Spectre used to say..." Always order a diamond that when you first put it on, you're embarrassed that it's too big!" And OMG was he ever right. I LOVE this set, it is truly the perfect size for me even though it's going to take getting used to the beautiful blinding light from the diamond cut! I think I'm going to sleep in it tonight and use it as a flashlight to go to the WC!

  • Stunning! 5

    Posted by Blake on Apr 4th 2011

    Received this as my engagement ring. I have always wanted a cushion cut. This looks amazing in person and everyone that has seen it is jealous!

Customer Login Close Close
Review your cart Close Close
Your cart is empty
Close Close
Search Close Close