Comments for Hallmark on this vintage mine cut diamond ring

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Mine Cut Antique Diamond Ring with a Yellow Heart šŸ’›
by: Yvonne & The Sphinx

Maharba Callie!
Thanks for writing in. The Sphinx and I have been admiring this Antique Halo Ring on the bench. It's gorgeous!


That yellow center stone + square halo is GORGEOUS. These mine cut diamonds + colored center is a very Art Deco / Edwardian vibe.


About the ring in the photo:
From the photo alone I can’t see a hallmark yet, but here’s what Sherlock and I would check:

1. Inside the band - That’s where 90% of marks hide. Look for:
- Metal mark: 18K, 750, 14K, PLAT, 950
- Maker’s mark: initials in a shape
- Country mark: anchor = Birmingham, lion = London, etc.
2. Setting style: The square "stepped" halo + mine cuts screams 1920s-1930s Art Deco . Mine cuts were mostly phased out by 1940.
3. Yellow stone: Could be a natural yellow diamond, yellow sapphire, or even a treated stone. The hallmark won’t tell us that — we’d need lab notes for that.

A mine cut with a yellow heart. The evidence is beautiful

With care from the Bench,

Yvonne & The Sphinx 🐯




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