251.76 Carat Rough Black Diamond

Presenting a once-in-a-lifetime opportunity: This monumental 230.25 carat carbonado diamond is the largest natural black diamond available on the market. Known for their extraordinary rarity and captivating origin, carbonado diamonds are believed by many in the scientific community to have formed in space and arrived on Earth via ancient meteorite impacts – making them not just gemstones, but celestial relics. This uncut, museum-grade carbonado black diamond...

This very lustrous, large rough black diamond mined in Canada weighs 91.40 carats and has crystallized in a natural cube shape. Black diamonds owe their opaque color to natural impur...

This extremely lustrous and large rough black diamond mined in Canada weighs 86.22 carats. Black diamonds owe their opaque color to natural impurities in the crystal lattice and make...

This lustrous rough black diamond mined in Canada weighs a hefty 71.19 carats. Black diamonds owe their opaque color to natural impurities in the crystal lattice and make beautiful c...

This pretty Purple spinel Cushion cut , weighs 1.81 carats and would make a beautiful 3-stone ring, though its shape lends itself to a variety of possibilities! It measures 8.09 x 6....

This rare and beautifully sculpted 4.50 gram Moldavite specimen showcases the natural, aerodynamic form and vibrant olive-green hue characteristic of the finest Czech impact glass. M...

This pretty Grayish Purple spinel Cushion cut , weighs 1.98 carats and would make a beautiful 3-stone ring, though its shape lends itself to a variety of possibilities! It measures ...

Pyrite mineral specimen. It is an usually large piece of pyrite and very rare to come by in this size (130 lbs / 59 kg). Pyrite, also called iron pyr...