Black Diamond Ring, 3mm, in 925 Silver, Size 15 | Rocas & Cristales

Exclusivity & Design — Black Diamond Ring, 3mm: Hand-crafted in 925 silver at our Córdoba, Argentina atelier, this ring is set with a single 3 mm black diamond, the result of a rigorous, hand-selected stone search and a design meant to stand alone. Every gem is evaluated in person by our artisans before setting, prized for its color, transparency, and cut above sheer carat weight, in keeping with the quietly luxurious philosophy behind every Rocas & Cristales collection.

Aesthetic Details — Black Diamond Ring, 3mm: Set to full view, the black diamond draws every glance to its absolute opacity and singular metallic sheen, lending a bold, contemporary edge to an otherwise minimalist band. The design reads equally well as a solitary statement or layered within a stack of rings, and the hand-finished 925 silver carries a tidy, considered polish from the metal itself through to the final setting of the stone, with a slim profile that sits close to the skin and wears comfortably from morning into evening.

Craftsmanship & Shipping — Black Diamond Ring, 3mm: Each Black Diamond Ring is handmade in Córdoba, Argentina, and inspected by our workshop before it ships to guarantee its quality. Complimentary worldwide shipping is included, and every piece is a limited edition of wearable art rather than a repeated production run, verified by our team before it leaves the workshop.

Natural Stone Properties — Black Diamond Ring, 3mm: Black diamond, also known as carbonado, is formed from countless microscopic grains fused into a single dense body, its origin still debated among geologists, with some theories pointing to meteorite impact as the source of its formation. That fusion is precisely what gives it an opacity unlike any other diamond variety, reaching a full 10 on the Mohs hardness scale while remaining porous and free of the light refraction typical of colorless diamond. Sourced from Brazil and the Central African Republic, black diamond is associated with strength, protection, and the transmutation of negative energy, its resonance held in the root chakra and felt most keenly by those born under Capricorn.