Tulum GIA 1.55 carat old mine cut diamond 18k yellow gold platinum ring - T&H Exclusive

An old mine brilliant cut diamond, weighing 1.55 carats and certified by GIA in F color and SI2 clarity, anchors this engagement ring with the deep pavilion and soft, candlelit sparkle that defines pre-modern diamond cutting, a cut choice made deliberately here rather than inherited from an actual period piece. Twelve round brilliant cut diamonds, weighing 0.10 carat combined in G-H color and VS clarity, run along both shoulders in a bright, continuous row, extending the sparkle outward from the center stone rather than leaving the band bare. Crafted in 18k yellow gold and platinum and hallmarked with a purity mark, the ring weighs 3.93 grams, well-balanced and comfortable for daily wear. Made new in 2026, the combination of an old mine cut center diamond with fully diamond-set modern shoulders gives this ring a foot in both eras at once, romantic in its cut and thoroughly contemporary in its construction and documentation. A thoughtful choice for anyone who loves the warmth of antique-style cutting but wants the fuller shoulder sparkle and GIA-certified reassurance of a brand-new engagement ring rather than an estate piece.