- Lajuj Industrie
- Rough Quartz.
- Address:Tanda mti street Dar es salaam , Ilala
- KEIYA GENERAL SUPPLY
- Iron ore,Rough Opal,Quartz,Ganets,Gemstones.
- Address:Box 7
- Africangems
- Diamond, Tanzanite, Amethyst, Tourmaline, Garnets, Moonstones, Quartz, Ruby, Sapphire, Change Colour,ROUGH GEMSTONES,GEMSTONES.
- Address:P. O. Box 18045
- Laika Gemstone Dealers
- Amathyst,Ruby (semi gem) rough and cut,Modvite (cut and rough),Quartz,Rhodelite,Green tourmaline,Citrine,Red garnets,Blue Suphire,Sunstone.
- Address:Sinza
- Ruvuma Treasures & General Supplier
- Garnets: red,rose,pyrope,Rough ruby cab,Quartz: smoky cluster quartz,crystals & citrine,Sapphire,Aquamarine: crystals,cab & rough,Rhodolite,ROUGH GEMSTONES, ART STONES, MINE RUN, etc..
- Address:Plot 799 Bombambili,
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