- Cong Ty TNHH Mien Duyen Hai
- semi-precious stones,Nephrite Jade,Amethyst,Topaz,Fossil Wood,Peridot,Chemical,Garnet,Topaz,Chalcedon,Rose Quartz,Quartz Crystal,Nephrite Jade,Amethyst,Agate,fossil wood.
- Address:86 Nguyen Hong Dao
- A Dong Gold Silver Gemstone Company Limited
- Gemstone,Gemstonepainting,Jewelry,Precious Stones,Topaz,Emerald,Sapphire,Amethyst,Ruby,Aquamarine,Rough gemstone,Peridot,Spinel,Star ruby,gemstone.
- Address:Room No. 3, 3rd Floor, 91 Dinh Tien Hoang
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