Round Cubic Zirconia Cathedral Solitaire Engagement Ring

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SKU: R1002R
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Our round 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 round center creating an elevated design element to that of the classic engagement ring style. The round brilliant cut center stone is set in a very durable die struck, six 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 round 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 round cathedral solitaires are available in a myriad of carat size center stones as well as various precious metals like solid gold and platinum. See below for the detailed features on this round diamond look cathedral 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 - .50 ct. 5mm, .75 ct. 6mm, 1 ct. 6.5mm, 1.50 ct. 7.5mm, 2 ct. 8mm, 2.50 ct. 9mm, 3 ct. 9.5mm, 3.50 ct. 10mm, 4 ct. 11mm, 5.50 ct. 12mm, 7 ct. 13mm, 8.50 ct. 14mm, 11 ct. 15mm
  • 6 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



22 reviews
  • Nicer that what I could afford in a real diamond 5

    Posted by Shawnna Richards on Jan 24th 2023

    I bout the 2 carat Ziamond version of this ring. Ina. real diamond version it would have cost me almost $20K. I'm happy with my choice, no one has ever been able to tell and I get nothing but positive comments.

  • Looks like the real thing 5

    Posted by Mary on Feb 3rd 2022

    I found the ease of shopping at Ziamond great. The merchandise is exactly what I have been looking for forever. I have a problem in loosing expensive jewelry and now I can have nice looking things without it costing a fortune to replace. I will definitly be back for more shopping. Thank you

  • Overall Satisfied with Ziamond 5

    Posted by Jeannie Dower on Jan 12th 2022

    My cathedral ring turned out nicely. I have a 2 carat and it's made in 14 karat white gold. I wear it everyday with my diamond band and have had a great experience. The Ziamond stone still looks good after 6 years.

  • She loved it 5

    Posted by Adnan on Sep 24th 2021

    Needed in 3 days and they made it happen!! Thanks for getting me this beautiful ring for a special occassion, she loved it!

  • Will Gladly recommend 5

    Posted by Susen on Aug 13th 2021

    Before ordering from Ziamond, I had a few questions...I asked them via e-mail, and to my surprise, they answered within two hours. I wish to thank everyone at Ziamond for the excellent customer care they provide, and their attention to detail. I will definitly be a returning customer, and will gladly recomend them to my friends!!!

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