Harmony Gems
Harmony Gems is a fifth-generation, family-owned gemstone specialist offering a wide range of coloured gemstones.
London
Showroom - by appointment only
Coloured Gems
Gem testing
Rare gems
Learn Gemstone Carving
An online course that teaches you, step by step, how to transform rough stone into beautifully finished gemstone carvings using accessible tools and professional techniques.
Brighton
Online
Training and Education
Natural Spinel Gem
UK-based direct supplier of ethically sourced natural spinels.
London
Online
Sourcing
Marcus McCallum
Marcus McCallum offers a wide selection of hand-selected gemstones and pearls.
London
Showroom - walk-ins welcome
Online
Gem testing
Coloured Gems
Gemmologist
Ilona Biggins
llona Biggins Beads are a UK supplier of Quality Semi Precious Beads, Freshwater Pearls
Hertfordshire
Online
Showroom - by appointment only
Beads
Pearls
Trade and Public
Fair Trade Gemstones
Representing Columbia Gem House of the USA, the worlds first Fair Trade Gems and Protocols
London
Online
Coloured Gems
Diamonds
Fully Traceable
Responsible Sourcing
Trade only
Gemmology Rocks
We do gemmology that works! We have recycled, rare, unusual and super cool stones. We know what we're doing, and we can teach you that too.
Maidstone
Showroom - by appointment only
Online
Practical gemmology training
Education in gemstones
Recycled/secondhand gems
Diamonds
Coloured Gems
Rare gems
Trade only
Misfit Diamonds
A B2B wholesaler that specialises in unique and unusual natural diamonds and sapphires.
London
Showroom - walk-ins welcome
Online
Diamonds
Sapphires
Nineteen48
Nineteen48 is a specialist in responsibly mined and fully traceable coloured gemstones, mainly sourced directly from mines in Sri Lanka and Tanzania.
Travelling
Online
Responsible Sourcing
Fully Traceable
Sapphires
Sri Lanka
Moyo Gems
Gem Training
