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Black diamond engagement rings feature a striking opaque black center stone — a bold, modern alternative to a white diamond, and a full 10 on the Mohs hardness scale, the hardest gem there is. Handcrafted to order in Los Angeles in 14K or 18K gold or platinum, in every cut and carat, with natural or treated black diamonds (or black moissanite).
Black diamond buying guide & FAQ
Are black diamonds real diamonds? Yes — real diamonds whose color comes from dense dark inclusions (natural) or treatment. They are 10 on the Mohs scale, just as hard as white diamonds.
Are black diamonds good for engagement rings? Yes — extremely durable for daily wear, and the dramatic color pairs beautifully with white-diamond accents and white-gold, rose-gold or platinum settings.
How much does a black diamond engagement ring cost? Typically less than a comparable white diamond. Segal's start around $1,000 and rise with carat weight, metal and setting.
Natural vs treated black diamond — what's the difference? Natural black diamonds get their color from graphite inclusions and are rarer; treated black diamonds are natural diamonds darkened by heat or irradiation and look identical to the eye at a lower price. Both are available on every design, plus black moissanite as a budget alternative.
Where can I buy a black diamond engagement ring? Segal Jewelry handcrafts black diamond engagement rings to order in Los Angeles and ships free worldwide; every ring includes a lifetime warranty, free 60-day resizing and 30-day returns. Showrooms in Los Angeles and New York by appointment.
What does a black diamond symbolize? Strength, power and enduring love — an unconventional, meaningful choice for a proposal ring.
Which cuts and styles are available? Every cut: round, oval, emerald cut, cushion, princess, pear, marquise, radiant and heart. Styles: solitaire, halo, vintage and rose gold. Matching wedding bands and necklaces are available.
Can I try the ring on before I buy it? Yes. For $199 Segal 3D-prints an exact replica of any ring design in your finger size so you can try it at home. You keep the replica, and the full $199 is credited toward the real ring (orders $1,000+, credit never expires). See Try It In Real Life.
Custom-made in the USA · lifetime warranty · free resizing · free shipping · 30-day returns · updated 2026. See the complete black diamond guide.
