Celtic Engagement Ring: Guinevere 0.75CT Blue Diamond Puzzle Ring


Celtic Engagement Ring: Guinevere 0.75CT Blue Diamond Puzzle Ring


  • Description
  • Guaranteed Fit
  • Blue Diamond Quality
  • Blue Diamond Delivery
  • Assemble 4-Band
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Item # GUIN-BLDIA-9650

Honor your love with our effulgent Guinevere puzzle engagement ring set with a 7/10ths carat (0.70CT) blue diamond. A Celtic knotwork-inspired puzzle weave suggests the connection between the two of you and the intertwining love that grows deeper throughout your marriage.

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 stone you select, its very shape and size, so your puzzle ring will be a true, one-off original. She will have fun learning to assemble her puzzle ring using the video instructions under a tab above on this page. Let us assure you, though, that the ring will arrive assembled!

Precious metal options: The base price on this page is for this ring in 14K white, yellow, or rose gold;  or four colors of 14K gold (rose, white, green, yellow). You may also select platinum.

Diamond size: The blue diamond shown is 0.70, but what is available now is 0.75CT, which is visually almost identical to the one pictured, but it’s five points bigger.

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

Weave options: The Guinevere diamond ring on this page has a standard weave. You may choose an open or tight weave, if you prefer. See the options link below to help you decide on the weave you like.

The Guinevere blue diamond puzzle engagement ring is artisan-crafted in the U.S. exclusively for Crystal Realm.

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.

Blue diamonds, even the treated ones we carry, are challenging to find. When you order a blue diamond ring, we will search for your diamond and will communicate with you about how the search is going. Please allow 6-8 weeks for the delivery of your blue diamond ring. 

When you order a blue diamond ring with a shadow band, we will need to pickup and retain the engagement ring after you propose with it, so that we can mate the shadow band  to the engagement ring perfectly.

When you order a blue diamond engagement ring with another type of wedding band, the two rings may be delivered separately or together.


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Puzzle ring precious metal (just-over-medium-weight) *

Puzzle ring weave

Used our standard US ring sizer?

Puzzle ring size (3 to 10.5)

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SKU: GUIN-BLDIA-9650 Category: