midheaven collection

Mare Nubium Gray Spinel engagement ring

$6,800.00 USD
18k gold and gray spinel

Long ago it was believed that there were beautiful seas and lakes of water on the moon that were visible from Earth.  Galileo looked through his telescope and named them all. This ring is named after one of those lakes, the Mare Nubuim.

A bold and classic style with an ancient silhouette, created here with gorgeous gray spinel and black diamonds, and cast in solid 18k recycled yellow gold.

The subtle flare and sculpted style on the ring shank refers to an old European style of ring that is comfortable to wear.


    CREATING YOUR BESPOKE RING

    1.  Choose Your Diamond - Browse our curated selection of GIA certified natural and lab grown diamonds below.  Our diamond inventory is live and updated daily. 

    2.  Choose Your Setting - Select your choice of precious metal alloy from our true tone color swatches.  Your size will be confirmed by our Custom Fit and Sizing service after purchase.

    3.  Add To Cart - Make sure both your diamond and setting are in your cart when you check out, and we will take care of the rest.  Our Concierge will confirm your true ring size after purchase.

    If you are looking for a colored diamond or sapphire we are happy to help, our DIAMOND CONCIERGE can help you explore all the options.


    Questions about this design? BOOK A CONSULTATION 

    ◖ Featuring a 1.16ct oval cut gray spinel, with an Earth to Market™ report. This natural spinel is sourced directly from Myanmar.

    ◖ Held securely with a modified bezel design, this spinel was hand selected individually for best luster and brilliance.

    ◖ Set with 0.28cts of brilliant cut round black diamond pave down the side of the band.

    ◖This is a one of a kind piece that can be resized. This ring is a US size 6 and can ship out within 2 business days. If you would like a different size please contact us for resizing information, to request modifications, or pricing for other gold alloys or platinum.

    Need help choosing a diamond?  Our Client Concierge is here to help!

    Long ago it was believed that there were beautiful seas and lakes of water on the moon that were visible from Earth. Galileo looked through his telescope and named them all. This ring is named after one of those lakes, the Mare Nubuim.

    A bold and classic style with an ancient silhouette, created here with gorgeous gray spinel and black diamonds, and cast in solid 18k recycled yellow gold.

    The subtle flare and sculpted style on the ring shank refers to an old European style of ring that is comfortable to wear.

    At 12th HOUSE we provide an exclusive Custom fit and Sizing service to ensure your new ring will fit you perfectly. 

    OUR PROCESS IS SIMPLE 

    Upon purchasing your ring you will receive a complementary Sizing kit with instructions on how to measure your finger exactly, and confirm the sizing is absolutely perfect before your ring is made.

    After confirming your exact ring size we will begin crafting your custom-made piece in our studio.

    Our Midheaven Collection engagement rings are Bespoke, custom made to order for you in your exact ring size and set with a select lab grown or natural diamond of your choosing.  GIA Diamond Certifications and fine jewelry evaluation reports are sent digitally with your finished piece.

    Available ring sizes are whole, half and quarter US sizes ranging between size 3 to size 12.  

    Our Concierge will contact you to confirm your true sizing after purchase. Feel free to Contact us here anytime with any questions about the Bespoke process.


    View our complete FAQ page here

    bespoke consultations

    Choose from our premium selection of GIA certified ethically mined or lab grown diamonds, and find your true ring size through our Custom Fit and Sizing service.

    ◖This is Bespoke Fine Jewelry◗

    At 12th HOUSE we are passionate about making the most beautiful and magically centered jewelry for our clients, your treasured heirlooms that will be cherished for years to come.

    Contact for Consultation