- Embassy Emeralds – Information and identification methods of emeralds.
- Stars Shiny – Professional jewelry beads wholesaler.
- Stonesandsilver.co.uk – Silver and semi precious stone jewellery. Made and selected by a UK silversmith.
- Hoffs Rock Shop – Rocks, minerals, fossils, crystals, artifacts, jewelry, crafts, books, CDs. A family business since 1952.
- Bob’s Rock Shop – Content and connectivity for rock hounds.
- Gem Blue Chart – Gemstones identification chart for professionals.