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 was based in Aberdeen, Scotland but has now relocated to Winchcombe, in the Cotswolds.

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 was based in Aberdeen, Scotland but has now relocated to Winchcombe, in the Cotswolds.

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 was based in Aberdeen, Scotland but has now relocated to Winchcombe, in the Cotswolds.

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 25th April

Come along to the Pittville Pump Rooms on Thursday 25th April for a lunch of fashion, luxury and gems, in the company of a select gathering of local designers, retails and wholesalers, who are all generously donating their time and lovely raffle prizes in this most deserving of causes. Tickets are £35 and are obtainable from www.cancerresearchuk.org/CheltenhamLunch or 01242 603183

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Upcoming Events

Thursday 25th April ~ 12:00pm

Come along to the Pittville Pump Rooms at 12 noon on Thursday 25th April for a delightful lunch accompanied by an glittering array of fashion and luxury, hosted and in aid of Cancer Research UK. In addition to learning all about Glorious Coloured Gemstones, their geology, gemmology and use in designer jewellery, from Helen Plumb; there will be an assortment of high end fashion designers and luxury brands for your enjoyment. With generous raffle prizes kindly donated by local businesses and their wholesalers, such as Aston Martin, Dubarry, Robert Welch and Just Gems, you will have a chance to win your own special treat, all in aid of this most deserving cause.

Hurry to buy your tickets which are available from www.cancerresearchuk.org/CheltenhamLunch or contact 01242 603183/ 077723 977012

Tickets are £35, Tables seat 10.

See further details

Featured Jewellery

Shamrock 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 silverYellow diamond 5 stone cluster ring in 18ct yellow goldKunzite & opal pendantRubellite & golden diamond ring in goldAmethyst & 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 M writes…

I just wanted to let you know how delighted we are with the cufflinks. They are so beautifully made and exactly what I was looking for. It was our son’s birthday yesterday and he was blown away by them, he had no idea what he was unwrapping and couldn’t believe his eyes when he saw them.

Mr B writes…

It’s nice to be explained things by a fellow geologist!


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