Search our shop

New snacks on sale now for a limited time! Use code NEW for 15% off.

Crown Ring - Men

Ring Size


A majestic ring made for Kings. Inspired from King Harrow’s crown, of “Dragon Prince.” The Crown Ring will transfer magical powers of genuine heartedness to the soul of the wearer. Represents love, commitment, and real connection. Each ring is designed to carry a lifetime of epic memories and adventures together. (Matching ring for Queens available)

  • Band height - 3.1mm
  • Band thickness - 3.8mm
Jewelry designed by Mementum in California. Handmade in Thailand with <3.
Mithril Silver

Our custom Mithril silver looks better and lasts longer than sterling silver. Adding Germanium and increasing silver to 93.0% gives you stronger and more tarnish resistant jewelry with a brighter silver color.

We grew up on video games and Lord of the Rings, so Mithril was a clear naming choice.


Our sterling silver chains are Rhodium plated for added durability and tarnish resistance. Rhodium is rare and more expensive than gold!

18K Gold Vermeil
Our gold vermeil is 18k gold or 18k rose gold layered over our Mithril Silver.

We set all Mementum jewelry with a one-of-a-kind Digital Soul - a secret key that unlocks your memories in the free Mementum app.

Made from specialized Lanthanum glass, each custom Digital Soul undergoes a month long manufacturing process. In the final step, we inscribe a unique key into each Digital Soul with micron-level precision.

Why go through all this trouble?

We know what it’s like when someone makes you feel truly special - it’s our mission to help you make them feel the same way. So, we designed a keepsake meant to last generations, a stylish reminder that they are loved, no matter where life takes them. So we said no to electronics, NFC tags, and RFID chips in our jewelry.

  • Make sure you are in a room with ample lighting for the jewelry to scan properly
  • If it’s your first time, we recommend putting your phone on a flat surface
  • Locate the front of your Digital Soul (the front is curved, the back is flat)
  • Open the Mementum app and tap ‘Scan’
  • Touch and align the front of your Digital Soul to the front-facing camera of your phone (psst... if you don’t see the code, try flipping the jewelry!)

  • Once you load the memories onto the Digital Soul, the recipient can create their own app account, then scan it to find the memories. There’s no need to share an account.
  • Remove jewelry before showering, bathing, or swimming
  • Clean your jewelry occasionally with a soft cloth
  • Always put your jewelry on after you apply perfume, lotion or other body sprays
  • Store your jewelry in a cool, dark place

Yes, the Digital Soul of your jewelry is waterproof and will continue to function after showering. However, we strongly recommend not exposing your jewelry to any type of water because water can cause it to oxidize more quickly. To keep it beautiful and sparkling, remove it before showering.
Customer Reviews
4.6 Based on 20 Reviews
Write a Review Ask a Question
  • Reviews
  • Questions

Thank you for submitting a review!

Your input is very much appreciated. Share it with your friends so they can enjoy it too!

Filter Reviews:
    Miskolczi S.
    Hungary Hungary

    Professional, quick business.

    Cora G.
    United States United States
    Good product

    Good package didn’t take long to come and it’s great quality

    Tate M.
    United States United States
    Girlfriend’s Birthday

    It was the best gift I could’ve gotten. She got teary eyed when she looked at the memories I stored. She absolutely loved it!!

    Beatrice N.
    Italy Italy
    Absolutely wonderful!

    It was great. The package arrived in less than a week and I was really surprised since I live far away from the US. The ring is gorgeous and it’s a really thoughtful present to do!

    Jenna F.
    Japan Japan
    Perfect Gift for Online Couples

    I haven't met my boyfriend yet, but we are planning to meet very soon. I'm going to take a whole bunch of pictures while I'm with him on my trip, and the day I leave I'm going to put all the best ones on the necklace for him to remember when I'm gone. This is a fantastic, thoughtful gift that anyone would be delighted to have. It makes being in an online relationship just a bit easier, knowing that your memories are with you wherever you go.