Ring Sizer Tool

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Design Details & Specs

Not sure about your ring size? We've got you covered! Use one of these handy tools to determine your ring size without having to visit a jewelry store in person. Simply follow the instructions on the envelope, and adjust the sizer accordingly. 

Currently we only ship within the United States.

Return Policy & Shipping
Refunds for ring sizer not accepted.

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Ring Sizer Tool


Ring Sizer Tool - Marrow Fine
Ring Sizer Tool
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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.

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Weeks 1-2

Let's chat and ideate.

Weeks 2-4

From dream to design

Weeks 4-8

Make magic & celebrate

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