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Ceto Solitaire


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This stunning, one-of-a-kind piece features a teal, oval-cut American Montana sapphire that is fit for a mermaid. Set in gold, the setting is hand carved specially for this brilliant cut blue-green gemstone.

I took inspiration from undersea worlds when designing this piece. It would make an amazing engagement ring or anniversary present to symbolize an everlasting love that goes deeper than the ocean.

Blue-Green Montana sapphire, 6mmx4mm stone.
Band Size: 16 gauge/1.29mm

Size Guide
14K Fairmined Gold, Satin Finish
Gemstones Montana Sapphire, Parti Bi-Color Sapphire, Round Brilliant Cut Ethical Sapphire, Round Brilliant Cut,
Collection Rings
Rewards Points Eligible for 1,000.00 Total Points, Learn More 

Our Sapphires are from India (white), Africa (teals and blues) or the United States (teals and blues) and have been verified by our reputable suppliers to be fully traceable and ethically mined.

14k Fairmined Gold

Fairmined gold ensures that the gold is mined with strict ethical and ecological standards. Fairmined guarentees that there is no child labor, no conflict financing, miners are paid fair market value, and promotes a positive environmental legacy.

Enjoy Free Insured Shipping and 14 Day Returns.

Skincare products are final sale.


Requires 3 - 6 weeks to ship. If you need your piece expedited contact us at before purchasing.

Sustainable & Ethical

Our socially & environmentally responsible collection is made using certified fairmined gold and traceable ethically mined gemstones. Plus one tree is planted for every purchase.

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Handcrafted Just For You

Each piece is carved one at a time and cast using the ancient "cast in place gemstone" technique. This is an unconventional process that focuses on unique handmade details and is truly one-of-a-kind. 

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Need Help?

We are standing by to help with anything you may need. We can provide more images, videos and measurements or help you find the right size or style.

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Customer Reviews
5.0 Based on 1 Reviews
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    A Perfect Engagement Ring

    I purchased the Ceto Solitaire as an engagement ring and couldn't be happier with it. I'd originally been considering a few other different rings from Valley Rose, and thought stacking them with one of a few simpler rings as a wedding band could look nice. Brittany was both incredibly helpful with suggestions and sent along photos of the different pairings so I could see each different set together. When the time came to purchase rings, Brittany was even able to help me get a hold of the last one available at the time. Crisis averted! If you're considering a Valley Rose piece, trust that they're fantastic.

    Sizing & Care

    Ring Sizing Guide

    Print and download this chart to find your ring size. Make sure you use exactly 8.5"x11" letter paper. You can use a string or a piece of paper and wrap around your finger or nuckle to measure the circumference and match to your size.

    Brilliant Earth Ring Sizing Guide ↠


    Necklace Sizing Guide

    Follow this chart to see where the necklace will fall. All necklace sizes are described on the product pages. We suggest getting a piece of string and measuring necklace on your neck to ensure best fit. 


    Special Care Instructions

    To keep your jewels looking their best please keep these tips in mind to extend the life of your pieces.