Rare Gemstones and Metals Portfolio

Rare Gemstones

Selected by our GIA Gemologists from the mouth of the mine, then cut and graded for colour, clarity and life before release to our trade clients.

Read how we select and grade material in our rare gemstone sourcing guide or see our tanzanite supply.

• Tanzanite

  Deep violet-blue trichroic stone from a single source on earth.

• Tsavorite

  Vivid chrome-green garnet, prized for its brilliance and rarity.

• Fancy Tanzanite

  Unheated pastel and bi-colour material in collector grades.

• Tourmaline

  Full spectrum, from rubellite reds to mint and indicolite blues.

• Aquamarine

  Clean, high-clarity sea-blue crystal in commercial and fine grades.

• Malaia Garnet

  Rare peach-to-cinnamon garnet with exceptional light return.

• Rhodolite Garnet

  Raspberry-purple stones with reliable colour consistency.

• Fancy Sapphire

  Padparadscha, yellow, teal and untreated blue selections.

• Ruby

  Rough and faceted material graded for colour saturation and life.

• Other Rarities

  Spinel, kornerupine, sphene and one-off collector specimens.