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WOJOGO Diamond Sizer Shape Guide Size Kit – Engagement Ring Diamond Size and Shape Kit Comparison Tool for Round, Oval, Princess Shape

  • Based on 10 reviews
Condition: New
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Availability: Only 5 left in stock, order soon!
Fulfilled by Amazon

Arrives Oct 23 – Oct 24
Order within 17 hours and 33 minutes
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Features

  • Find The PERFECT Ring!Our Diamond Sizer & Shape Ruler helps you easily determine the ideal diamond size and shape for your engagement ring, ensuring you choose the perfect one for your loved one. Perfect for anyone in the market for an engagement ring or those assisting with the proposal process.
  • Popular Diamond ShapesWOJOGOs diamond guide includes various carat sizes and popular diamond shapes, including round, princess, oval to match all styles of engagement rings
  • Easy-to-Use ToolWhether you're shopping online or in-store, this simple ring kit and sizer ruler guides you through different carat sizes and diamond shapes, making it easier to visualize and compare options before you buy
  • High Quality & ReliableCrafted from durable, high-quality materials to provide precise measurements, this ruler ensures you make informed decisions about your diamond purchase
  • Perfect for Engagement Ring ShoppersWhether you're surprised by a proposal or planning it yourself, this diamond size and shape kit is an essential guide for choosing the right diamond for your engagement ring. Help your loved one pick the best diamond for their momentous day!

Description

Product Includes: 1x Diamond Size Shape Guide Ruler for Round Shape 1x Diamond Size Shape Guide Ruler for Oval Shape 1x Diamond Size Shape Guide Ruler for Princess Shape

Product Dimensions: 8.5 x 2.5 x 0.3 inches


Item model number: Diamondruler03


Item Weight: 2.71 ounces


Manufacturer: WOJOGO


Date First Available: April 9, 2025


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Oct 23 – Oct 24

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Great Buy!
Fast shipping, good quality, exactly what I needed. Very satisfied!
Reviewed in the United States on July 24, 2025 by Merve

  • Great way to see realistic size on your hand!
recently purchased this diamond  sizer kit so that I could get a tangible feel for how the various diamond shapes (round, princess, or oval) & sizes (0.5ct-4ct) look before having a custom CAD ring made. They are compact and super easy to use! Each one is clearly labeled with the progression in size giving very realistic results when placed over the finger. PROS: The cutouts are realistic enough to help you envision how a 1 ct princess or a 3 ct oval would look in person. They are very lightweight making them easy to transport in your bag or planner. The plastic/acrylic is very durable which makes it feel more professional than a paper print‑out. CONS: The price is a bit steep compared to available smartphone simulators. It only covers 3 shapes, of which only the princess appeals to me. I would have preferred the option to select which sizers are included so that I could have chosen some more modern (emerald, cushion, fancy) cuts. No storage case is included - just the flat ruler cards, which means they’ll be easy to misplace if not careful. If you’re planning an engagement, helping a friend choose her gem size, or even just trying to discern how a 2 ct round differs from a 2 ct princess on your hand - then this would be a neat portable helper. ... show more
Reviewed in the United States on July 28, 2025 by J J

  • Handy to Have at the Booth
This diamond sizer kit is great to keep on hand, even though I don’t do a lot of this type of jewelry. It’s come in handy a few times, and I was even able to help out a neighboring vendor who needed one for their specialty jewelry. It’s a simple tool, but really useful to have around just in case.
Reviewed in the United States on September 12, 2025 by Trisha

  • Not correct sizing
It is off on size. My ring is a little over a carat. According to this, it is about 1/2 carat. I have a larger Moissanite stone that is three carats. The sizer makes it about one carat. It does give you an idea of what the stone would look like on your finger. Keep in mind the stone size will be off sized. But, a good jeweler can give you the correct stone size. ... show more
Reviewed in the United States on August 19, 2025 by RLynn RLynn

  • An easy way to show stone sizing
I love these. I am a professional piercer, and use these to show people how large a piece of jewelry will look in a specific location. People always think they want BIG until they see it on, and this is a really easy visual aid!
Reviewed in the United States on August 10, 2025 by Shana Renee

  • Aced the one job it was designed for
These templates are useful for seeing how the stones would look on a person because of the transparency around it. They are very easy to use since it's just an acrylic with the stone overlaid on it. It's almost too easy to use which is the point. Functionally there are no moving parts and it worked as designed. In terms of quality, it is solid and because there are no moving parts there's nothing to break. One thing that could be improved with the product is that they could have included cutouts for the same sizes of the stones so that you can use it as a template to draw from but because it is only an overlay of the stone sizes there is less utility to them. Is it worth it? Only for this specific use case, if you have a need to show others what stone sizes look like on their fingers or other parts this fits the bill. ... show more
Reviewed in the United States on August 1, 2025 by Cal from Cali

  • Try on gemstones without leaving home
These nifty little tools make it so much easier to visualize different gemstone sizes and shapes. They’re especially handy if you’re ordering jewelry online and can’t try it on first—you get a true sense of scale before making a purchase. The acrylic is thick, clear, and sturdy, so they feel durable enough to last. The only tricky part was peeling off the protective film, but an X-Acto blade to lift a corner solved that quickly. Once set up, they work exactly as described and are surprisingly useful to have on hand. ... show more
Reviewed in the United States on July 24, 2025 by Zub-a-dub-dub

  • Great for jewelry shopping
Great item to have around when shopping for jewelry. I used them to decide on the shape and size of diamond stud earrings I was purchasing.
Reviewed in the United States on August 1, 2025 by Deborah Burnaroos Deborah Burnaroos

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