SKU: 34321

Mid Century GIA 3.09 carat old mine cut diamond platinum engagement ring

$ 37,500
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A captivating testament to mid-century refinement, this platinum engagement ring centers upon a stunning 3.09 carat GIA-certified old mine cut diamond, radiating with depth, fire, and old-world character. The diamond’s warm K hue glows with subtle charm, enhanced by two sleek baguette cut diamonds that lend a touch of Art Deco-inspired geometry and balance. Meticulously crafted in platinum, the ring embodies the timeless elegance and understated luxury of the 1950s. With its perfect harmony of brilliance and design, this piece stands as a classic symbol of enduring beauty and sophisticated craftsmanship.
Period 1950
Metals & Materials Platinum,
Size 9
Style Choice Contemporary
Primary Stone/s
Stone Type Diamond
Stone Cut Old Mine
Carat Weight 3.0 - 5.0 ct
Colour Grade KH
Clarity Grade Very Slightly Included (VS2)Very Slightly Included (VS1)

7-day, 100% return policy

From delivery or collection, we're happy to give you 7 calendar days to try the jewelry in the comfort of your own home. If you decide to return the jewelry, we also provide the return shipping label & instructions.

We guarantee free worldwide shipping. Our packages are 100% insured for loss, damage, or theft and are shipped via FedEx.

Always in style

There’s nothing quite like vintage. Every piece we find has its own past — worn, loved, and passed down through generations. We inspect and select each item with care, preserving its unique charm while ensuring it’s ready for its next chapter with you.

Shop with zero worries

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7 day 100% return policy

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Free shipping & returns

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Expertly sourced

Frequently Asked Questions

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If you want to see your piece from every angle or have a question, book a virtual appointment with Sasha—she’s here to help.

Good Company

Loved by vintage fans!

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Beyond obsessed

I'll just start by saying that every piece of vintage jewelry in this shop is more beautiful than any other I saw in all of LA. Not only do I absolutely adore my ring, I had an amazing experience here as well. Basically the dream situation for a newly engaged gal! 

Haley M.
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Loved the ring

Love this place. The staff's knowledge and attention to detail was incredibly helpful. 

Dan C.
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Your Biggest Fans

For the past four years we have only used Trumpet & Horn for fine jewelry purchases. The team at Trumpet & Horn go above and beyond to make sure that each detail is classy and beautiful. I have worn my engagement set every day for nearing four years. 

Ashley H.
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Positive experience

My fiance and I found the perfect ring at Trumpet & Horn. After not finding anything in stores, we turned to the internet and were glad to find Trumpet & Horn. I absolutely LOVE it.  

Sarah B.

Loyal Customer