A true unicorn—there is simply no other way to describe her.
Dating to the 1830s, this original Georgian treasure has remained in remarkable condition, with the most exquisite detailing along the band and a beautifully unique scalloped setting that speaks to the craftsmanship of the era. At her center sits a striking 3.13 carat oval old mine cut diamond, full of life and character.
What makes this stone especially captivating is its color—touched with the faintest hint of brown, allowing it to face up bright while carrying an undertone of the most luxurious warmth. Not yellow, but a rich, buttery patina that feels deeply romantic and entirely one of a kind. And to the eye? She appears impeccably clean—truly presenting like a high-clarity diamond.
Which is why her GIA grade of I1 came as such a surprise. But this is precisely where her magic lies—you are getting the look and presence of high-end luxury at a far more attainable price point. It is an incredibly rare combination, and one that simply does not surface often.
This is what I call a unicorn.
If she speaks to you, I would strongly encourage you not to hesitate. Pieces like this—of this age, condition, scale, and presence—are few and far between. And when they do appear, they are often held tightly or offered at a significant premium elsewhere. With over 25 years in the antique jewelry world, I can say with confidence…this is not one you will come across again.
Antique Georgian 3.13ct Oval Old Mine Brilliant Cut Diamond 18k 
GIA certified
3.13ct K -FaintBrown (faces up H)
 i1 (looks VS) (hundred percent eye clean) 
18k yellow gold 
2.87g
Size 5 (sizable) 
Comparables for this ring have sold at around 32K