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 & enthusiasm for gemmology with those interested in learning more at events. Just Gems has been serving the Cotswolds since 2017 and has become a favourite visitor destination in the idyllic town of Winchcombe.

Large Sapphire & Diamond Ring

11.47ct cushion cut Sri Lankan sapphire set with 1.13ct triangular diamond pair, diamonds G colour VS1 & SI1 clarity, in 18ct white gold. POA

Ruby & Diamond Ring

3.03ct ruby from Mozambique (independently certified to be unheated) set with a 1.00ct pair of heart cut diamonds (GIA certified D & E colour SI1 clarity), in 18ct rose gold and platinum. POA

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 & enthusiasm for gemmology with those interested in learning more at events. Just Gems has been serving the Cotswolds since 2017 and has become a favourite visitor destination in the idyllic town of Winchcombe.

Spectacular Boulder Opal

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 & enthusiasm for gemmology with those interested in learning more at events. Just Gems has been serving the Cotswolds since 2017 and has become a favourite visitor destination in the idyllic town of Winchcombe.

Boulder Opal Stud Earrings in Yellow Gold

Kunzite & Ethiopian Opal Pendant

8.78ct pear cut kunzite, set with 1.42ct pear cut cabochon Ethiopian opal, in 18ct white gold, suspended from 16” 18ct white gold anaconda chain

Paraiba Tourmaline & Diamond Ring in Platinum

4.02ct Oval cut Paraiba type, cuprian elbaite tourmaline set with 0.51ct E colour VS clarity diamonds in platinum

Our Latest News

Thursday 13th August

We are open Tuesday to Saturday 10am-5pm and are often very busy. PLEASE book an appointmnet if you want to speak to Helen Plumb, our resident gemmologist, about specific gemstone enquiries, commissions, identifications or repairs.

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Upcoming Events

Tuesday 24th November ~ 10:00am

Just Gems is hosting a special show of top German Designer Jewellery at our Winchcombe shop during the last week in November. the event will run 24th-28th November 10am to 5pm. German 18ct gold and gemset jewellery will be showcased. All pieces will be available for purchase. This is a unique opportunity to inspect and acquire spectacular jewellery made by cutting edge German technology. Under normal circumstances these pieces are only available to commission with a 3 to 4 month wait for delivery. After 1st January 2021 and the UK leaves the EU, GErman manufactured jewellery may be subject to an additional import tariff.

Please call ahead to book your appointment to view. For social distancing reasons we are limiting visitor numbers to 4 per timed 30 minute viewing slot.

See further details

Featured Jewellery

Tourmaline & garnet ringLilac sapphire ring in 18ct white goldAmethyst & diamond ring in goldYellow diamond 5 stone cluster ring in 18ct yellow goldWood opal pendant in palladium & 18ct yellow goldKunzite & opal pendantRubellite & golden diamond ring in goldShamrock pendant in rose goldBoulder opal, orange & green garnet earrings in 18ct yellow goldWatermelon tourmaline & sapphire pendant in rose & white goldRound emerald pendantWatermelon tourmaline cabochon cufflinks in silverAmethyst & sapphire pendant in rose & white goldTanzanite & sapphire pendant in 18ct white goldBlack opal and pink sapphire heart ring in platinumGolden pear cut diamond ringKildrummy quartz, brown diamond and pink sapphire pendant in 18ct rose and white goldPink 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…

Mrs G writes…

Just got in from work to the lovely surprise parcel! The ring is so sparkly I keep looking at it. The necklace is lovely I have tried it on the length is perfect. Many thanks I will have many years of happy wearing.

Mrs R writes…

Just to let you know that my daughter is over the moon. She keeps saying, ‘It’s 10 times better than I ever imagined’ !!

Thank you so much


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