Serving independent lapidaries with high quality individual pieces of gemstone rough from around the world
  • Tanganyika Trading
    Specialty offerings of large, unusual, or rare gemstone rough, in individual pieces and parcels
  • A Global Company
    Not only do we ship worldwide from both South Africa and Virginia, USA, our rough comes from four continents and many countries
  • Our Goal
    To serve you, the independent lapidary, with high quality gemstone rough from around the globe
  • Share with Us
    Send us pictures of your finished pieces cut from African Gemstone and Tanganika Trading rough; we love before and after shots
  • Two Generations
    Over 70 years combined industry experience in mining, cutting, purchasing, and setting gemstones, with multiple degrees in Geology and Gemology- Hilmar and Logan have the skills, education, and experience to cater to the most discerning cutters

Buying from both African Gemstones and Tanganyika Trading? Please submit an order for each and choose “Pay By Check” (available for verified accounts) and send payment in full to African Gemstones.

Monitors are notoriously hard on color accuracy; everyone sees something a little different! Please read the color descriptions to help clarify any questions you have! And check our Policies and FAQ page for information regarding our photography practices.

Visit our Policies and FAQ page for full details on return periods, photos, payment methods, rough origins and more!

Please Direct Inquiries To

  1. African Gemstones Buying Department Only

    All Tanganika Trading Inquires:
    Hilmar Bosch
    P.O.Box 650
    HILTON 3245

    email: [email protected]

    +27(0)33-343 4431
    Mobile Phone +27-(0)79 557 0390

  2. African Gemstones Worldwide Orders and Sales

    Logan Cutshall
    African Gemstones LLc
    105 East Main St.
    VA 20132

    email:[email protected]

    +11(540)338 8050

From Rough to Finished

  • Cut African Gemstones: Lapidary - Marco Voltolini
    Red Garnet.
  • Finished African Gemstones: Lapidary - Barry Bridgestock
    Blue-Green Tourmaline
  • Finished African Gemstones: Lapidary - Ron Garthwaite
    Nigerian Mambilla Sapphires
  • Finished African Gemstones: Lapidary - Marco Voltolini
    Red Garnet
  • Finished African Gemstones
    Jubilant Crown Cut Rhodolite Garnets
  • Finished African Gemstones: Lapidary - Claire Cutshall
    Spessartite Emerald Cut
  • Finished African Gemstones: Lapidary - Claire Cutshall
    Antique cushion cut Merelani Garnet.

A small sampling of finished goods cut from African Gemstones and Tanganyika Trading rough!