Cushion Cut Square Cubic Zirconia Classic Solitaire Engagement Ring

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SKU: R1001C
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Our cushion cut laboratory grown diamond alternative cubic zirconia classic solitaire engagement rings blend the modern princess cut square and the brilliant soft shape of a round cut with 104 sparkling facets. Compare our square cushion cut classic solitaire engagement rings to the traditional styling of the Tiffany solitaire. The square cushion cut diamond look cubic zirconia in this solitaire is set in a four prong die struck classic solitaire setting with a tapered rounded shank measuring approximately 2.75mm at its widest point. Each square cushion cut shaped 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. You can wear this cushion cut square engagement ring alone or pair it with an anniversary or eternity band of your choice for a great bridal wedding set. Available in a myriad of carat size center stones as well as various precious metals like 14k solid, 18k solid gold and precious platinum. See below for the detailed features on this square 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
  • 4 prong die struck head for superb strength and durability
  • 2.75mm shank at widest point, tapers slightly toward bottom
  • Premium hand cut and hand 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
4 reviews
  • Bought it after years of consideration 5

    Posted by Sheila - NC on Feb 3rd 2022

    I'm embarrassed to say I watched this ring for over 5 years. The prices kept going up and I waited because I was not sure. I finally bought it in the 2.50 carat and it looks fantastic. Now I regret waiting so long. I paid more and I could have been enjoying the ring all this time. Thanks Ziamond for making a nice product.

  • Couldn't be more pleased! 5

    Posted by Michael on Nov 20th 2021

    Ziamond has been excellent to work with. The service has been prompt and the customer service has been great. Thanks again for answering all my questions for such an important purchase for me. You were right, the cushion is a great cut and your stones are dazzling. I couldn't have been more pleased with my ring.

  • Excellent product 5

    Posted by Jennifer on Mar 3rd 2016

    Excellent product...VERY satisfied. Fast processing and delivery. Very satisfied and would buy from again.

  • Love my cushion 5

    Posted by Colleen on May 5th 2008

    I already have the round solitaire, but when I saw this I had to have it too. Love the Ziamond jewelry!

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