Just Gems sells high-quality, certified diamonds & coloured gemstones, set in fine jewellery. We also offer a selection of rare & unusual natural gemstones which appeal to a discerning clientele.

Just Gems is owned and run by Helen Plumb, a gemmologist of international reputation, who is keen to share her knowledge of and enthusiasm for gemmology with visitors to her shop, or at speaking engagements and events.

Winchcombe Meteorite Cufflinks

Cufflinks in 18ct white gold made of fragments of the Winchcombe Meteorite

Our Latest News

Thursday 4th April

Our summer opening hours are Tuesday to Saturday 10am to 5pm, outside those hours we are pleased to open by appointment

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Upcoming Events

Wednesday 3rd April ~ 12:00pm

2024 Gem Talks - second quarter talks will be in Inkberrow, Callow End, Welland, Peopleton, France Lynch, Eastcombe, Sandhurst, North Woodchester, Mitcheldean, Minchcinhampton, Cirencester, Silverdale, Warminster, Cheltenham, Ashton Under Hill, Rushwick, Ullenhall, Great Rollright, Wychbury, and Edge. We are taking bookings for 2025, please contact helen.plumb@just-gems.co.uk or call 07732 835704 if you would like to book Helen to give your group a talk on Gems they will enjoy and remember. Please check the feedback on our latest talks on the About/Testimonials page of our website.

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Featured Jewellery

Tanzanite & sapphire pendant in 18ct white goldSapphire & diamond cluster ring in 18ct yellow goldOval black opal & tsavorite garnet ringRed spinel & diamond ringAmethyst & sapphire pendant in rose & white goldAustralian crystal shell opal set in 18ct yellow gold ringWood opal pendant in palladium & 18ct yellow goldWatermelon tourmaline cabochon cufflinks in silverBlack opal and pink sapphire heart ring in platinumPink sapphire & Tahitian pearl pendant in 18ct white gold

Explore all our Jewellery

The Just Gems Shop

27 North Street, Winchcombe, Gloucestershire

The shop has a wide selection of carefully sourced unmounted gems. If you would like to choose a loose gem in any size, shade or cut, we have a large number of suitable stones just waiting for you! Our gems are collected from personal contacts of Helen Plumb, relationships she has developed over more than twenty years of working with the international gemmological trade. Wherever possible, our stones are ethically sourced and many come from known mines in Brazil, Afghanistan, East Africa, Sri Lanka and elsewhere.

We also love pearls at Just Gems, and offer a matching service to make up earrings, bracelets, pendants or necklaces that will enhance your own pearl jewellery. We restring pearls in our workshop and can replace or repair damaged clasps. Please note that we only mount natural gemstones and restring real pearls (cultured or natural) and gemstones. We do not work with simulants.

See Opening Times and Directions

From our customers…

Ms B writes…

Just wanted to drop you a note to say thank you so much for taking us patiently through all the gems and ring choices on Saturday. My fiance and I really appreciate it, as the whole process was more than a little daunting at the start! So excited to see the made-up ring now!

Mrs E writes…

We all had a fab night last week at the Pearl Talk at the Marcliffe. It was extremely interesting, as always.


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