Celtic Engagement Ring – Avalon Blue Diamond Puzzle Ring with 4mm Shadow Band


Celtic Engagement Ring – Avalon Blue Diamond Puzzle Ring with 4mm Shadow Band


  • Description
  • Guaranteed Fit
  • Blue Diamond Quality
  • Blue Diamond Bridal Delivery
  • Assemble 4-Band
  • Reviews (0)


Item # ABD-SHB-12867

Sparkly and fresh looking is a bright blue diamond in an Avalon four-band puzzle ring with an open weave and a 4mm wide shadow band. A Celtic knotwork inspired puzzle weave suggests the never-ending love in your marriage.

A working puzzle ring, styled after legendary Celtic knotwork rings, this ring comes apart and goes back together easily with the video, animated, and written instructions we provide under a link below on this page. Rarely will you find a diamond engagement ring that will provide such fun and fascination!

Your puzzle ring will be hand-woven, in contrast to the majority of puzzle rings which are cast from molds. Our brilliant puzzle ring artist will custom weave your engagement ring precisely for the very stone you select, its very shape and size, so your puzzle ring will be a true, one-off original.

Your diamond size options:
Just over 1/2 CT or 0.55 CT;  4.5mm square, shown
Approximately 7.5/10ths CT or 0.75 CT;  4.75mm square
Approximately 1.05 CT;  5.5mm square

Precious metal options: The base price on this page is for this ring in 14K white, rose, or yellow gold or four colors of 14K gold (white, green, rose, yellow). Select platinum if you prefer.

Ring sizes: Available in whole, half, and quarter sizes 3 – 10.5; other sizes upon request.

This bridal set is exclusive to Crystal Realm is artisan-crafted to your order in the U.S.


When you use our ring sizer prior to our making your ring, we guarantee your fit. You may order the sizer before you order your ring. Or when you order your sizer at the time of your ring order, we’ll hold your order until you confirm your size by email. 

Once you’re used our sizer, if we deliver your ring, and it does not fit, we pay for the round-trip shipping for your free ring resize or replacement within the U.S. and provide a discount for overseas shipping.

There are two ways to request our sizer:
1. Order your ring sizer for a modest fee before you order your ring(s): Order your ring sizer here.
2. Request a sizer as part of your order at the time that you order your ring(s), and we will hold your order, send your sizer, and wait for an email from you with your size(s).
In either case, we will mail a ring sizer to you promptly. This is a physical, plastic set of rings in whole and half sizes that you can play with until you are certain you have a correct size. And if you find one plastic ring is too big and one is too small, we can make a quarter size for you. Please follow our included instructions for best fit.

Our blue diamonds are white diamonds treated with heat to produce a brilliant blue color. They have VS (high) clarity, are available in a variety of carat weights, and they are very beautiful. They are now certified (New!).

Our blue diamonds are not covered by our one free year of loss protection for white diamonds. We recommend insuring your ring through your homeowner’s policy or Jewelers Mutual Insurance. The benefit of using Jeweler’s Mutual Insurance is that they cover mysterious disappearance without a police report. Homeowner’s policies tend to require a police report, even if you are certain you lost your ring when you were swimming at the lake! Jeweler’s Mutual Insurance is the same insurance company that insures just about every jewelry business in the country. They are well respected and reliable. (And no, we don’t get a cut!)

We do not offer untreated, natural blue diamonds, as we do not have a reputable source for them. We’re not wild about natural blue diamonds, anyway, even if we could find them, as they are very costly and don’t have the brilliant, intense, blue color of the heat-treated diamonds.

We deliver the engagement ring first:
Blue diamond engagement puzzle rings are typically delivered within 3 weeks of your order. We ask that you order no later than  Wednesday evening of any week, and then we will deliver the engagement ring three weeks from the Friday following your order. In other words, you’ll receive the engagement ring in 23 days. We deliver the engagement ring first to ensure she loves it and that it fits. Blue diamonds do take a little longer to acquire, which is why we deliver these rings one week later than white diamond rings.

Making the shadow band to fit with your engagement ring:
Please be advised that if you are in the U.S. we will need to pick up and retain the engagement ring while we make the shadow band fit perfectly with the puzzle ring. Allow four weeks to six for the creation of the shadow band.

Are you in Canada or overseas?
If you live in Canada or overseas, we will work with you to deliver both rings together, but we will ask you to use our ring sizer gauge first, and that will set your delivery date back by three weeks or so since we need to mail it to you via the US Postal Service.


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Blue diamond size from 1/2 CT

Precious metal for 4mm shadow band bridal set

Used our bridal set ring sizer?

Puzzle ring size (3 – 10.5)

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