Jillian’s Notes
"She feels vintage and modern at the same time. A definite statement piece!"
Jillian Sassone – Creative Director & Founder
Black Onyx Boyfriend Signet Ring
This Black Onyx Boyfriend Signet Ring features a black onyx set in 14k gold. Designed after creating a larger white diamond version for our very own Hotdad, this right hand ring can be worn with a variety of our stacking bands or on her own as a statement piece. We recommend sizing up a quarter size due to the width of this design. Not sure about your size? Order a ring sizer tool!
Available in 18k gold and platinum. Contact us for pricing.
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Black Onyx Boyfriend Signet Ring
$1,300
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Stacks Well With
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My Marrow experience has been nothing short of amazing.
Danielle V
Feb. 2022
It was a dream come true working with the team at Marrow Fine. I’ve been following Jillian’s work for quite some time now and am elated that I finally have a custom piece of my own.
Brittany T.
Nov 2021
I couldn't recommend them more and my experience was nothing but spectacular, the quality of the ring purchased was impeccable as well.
Andre K.
April 2022
Marrow has such a beautiful selection of original jewelry. The staff are knowledgeable, friendly and attentive so it was a pleasure to shop there. Love this place!
Jane S.
Dec 2021
I have never felt more welcomed and comfortable in such a beautiful place. All of the women working there helped me decide what pieces were best for you and truly kept the fun flowing. I did not even know two hours had passed I was having such a great time.
Sarah A.
April 2022
I can not say enough amazing things about Marrow! They have the most amazing jewels and styles!
Antonia M.
July 2021
My fiancée loves her ring and is very excited to go back and pick out the additional stackers for the wedding band. The assortment of rings and stackers makes for a unique and special buying experience.
Stephen L.
May 2022
I recently purchased two beautiful necklaces from Marrow Fine and they have quickly become my go-to pieces.
Tracie W.
July 2021
Hand-picked. Sustainably sourced.
We take gemstone sourcing very seriously. We work with fully vetted, trusted partners and our own internal QA team to bring you the most sustainable and unique stones.
Marrow custom
From dream to design, we can’t wait to work our magic and create a completely custom Marrow piece that’s one-of-a-kind.
Weeks 1-2
Let's chat and ideate.
Weeks 2-4
From dream to design
Weeks 4-8
Make magic & celebrate
