I've spent more than thirty years in the world of jewellery, from my college and university days onward, and more than twenty-eight of them running my own business. In that time I've created over twenty-five collections, along with several limited editions and countless one-off and commissioned pieces.

I don't design to trends. I'd rather make jewellery with stories and meaning, pieces with a timeless beauty, made to be worn now and to become heirlooms, treasured for generations to come.

You can see all my current collections here, and if you're ever able, I'd love you to visit us in our gorgeous gallery in Llandeilo, south-west Wales, where you can see the collections in their full beauty and try pieces on to see how they feel.

Mari Thomas Collections

306 products

Mari Thomas Jewellery White Baroque Cultured river pearl necklace with round magnetic clasp
£270.00
£270.00
Mari Thomas Jewellery Pink barrel pearl necklace with silver gold plated clasp
£250.00
£250.00
Mari Thomas Jewellery Pink coin pearl necklace with large round magnetic clasp
£220.00
£220.00
Mari Thomas Jewellery Mixed colour coin pearl necklace with silver magnetic clasp
£220.00
£220.00
3 Full Brushstrokes necklace, sterling silver — the signature line repeated three times — Mwclis Arian
Mari Thomas Jewellery Brushstroke: 3 full brushstrokes silver 32" necklace
£430.00
£430.00
Mari Thomas Jewellery Pink baroque pearls with silver magnetic clasp
£215.00
£215.00
Mari Thomas Jewellery Fragile Form: Black silver and pressed flowers sculpture
£12,000.00
£12,000.00
SOLD OUT
Mari Thomas Jewellery Fragile Form: Gold and pressed flowers sculpture
£14,000.00
£14,000.00
Mari Thomas Jewellery *New* Fragile Form: 18ct gold, silver and black ruthenium pendant
£8,900.00
£8,900.00
Mari Thomas Jewellery *New* Fragile Form: 18ct gold pendant
£14,000.00
£14,000.00
Mari Thomas Jewellery *New* Fragile Form: 18ct gold, silver and black ruthenium brooch
£8,900.00
£8,900.00
Mari Thomas Jewellery *New* Fragile Form: 18ct gold brooch
£13,400.00
£13,400.00
Dathlu / Celebration: Silver Cufflinks - Mari Thomas Jewellery
Mari Thomas Jewellery Cariad / Love: Silver Cufflinks
£270.00
£270.00
Dathlu / Celebration: Long Silver Pendant - Mari Thomas Jewellery
Mari Thomas Jewellery Cariad / Love: Long Silver Pendant
£250.00
£250.00
Dathlu / Celebration: Long Drop Silver Earrings - Mari Thomas Jewellery
Mari Thomas Jewellery Cariad / Love: Long Drop Silver Earrings
£300.00
£300.00
Mari Thomas Jewellery White oval coin pearl necklace with silver magnetic clasp
£210.00
£210.00
Mari Thomas Jewellery Last Chance: Silver Mimosa brooch / lapel pin
£300.00
£300.00
Mari Thomas Jewellery White coin pearl necklace with sparkle magnetic clasp
£200.00
£200.00
Mari Thomas Jewellery White oval coin pearl necklace with silver magnetic clasp
£200.00
£200.00
Mari Thomas Jewellery *New* Glissando: Bar earrings silver
£140.00
£140.00
Mari Thomas Jewellery *New* Glissando: Long Bar pendant
£180.00
£180.00
SOLD OUT
Mari Thomas Jewellery One of a Kind: ( No.17 ) Bespoke Linear torque bangle with baguette cut diamonds
£1,700.00
£1,700.00
SOLD OUT
Mari Thomas Jewellery One of a Kind: ( No.18 ) Bespoke Carreg necklace / brooch in silver with baguette cut diamond
£1,990.00
£1,990.00
SOLD OUT
Bubbles layered necklace, sterling silver — clustered circles inspired by rising champagne bubbles — Mwclis Arian
Mari Thomas Jewellery *NEW* Bubbles: Layered Silver Necklace
£480.00
£480.00
Mari Thomas Jewellery Last Chance: Silver Mimosa Pendant
£340.00
£340.00
Mari Thomas Jewellery Last Chance: OMA Silver and cubic zirconia pin
£100.00
£100.00
Mari Thomas Jewellery Last Chance: OMA Silver Pendant
£100.00
£100.00
Contemporary Welsh silver jewellery. Inspired by the beautiful landscape of Wales. This torque cuff bangle is designed and handmade in Wales. Suitable for men or women.
Mari Thomas Jewellery *NEW* Carved: Silver torque bangle
£695.00
£695.00
Mari Thomas Jewellery Last Chance: Llawennau / Rejoice Long Silver Pendant with Diamonds
£525.00
£525.00
Mari Thomas Jewellery Last Chance: Atgofion / Memories Silver Lapel / Tie Pin
£125.00
£125.00
carthenni silver and gold plated medium pendant - welsh blankets Mari Thomas
Mari Thomas Jewellery Carthenni Embossed: St David's Cross Design - Medium silver and gold pendant
£310.00
£310.00
Welsh gold and silver Carthenni Welsh blanket inspired necklace/pendant designed and made in Wales.
Mari Thomas Jewellery Carthenni Embossed: Caernarfon 1 Design - Medium silver and gold pendant
£310.00
£310.00
carthenni large silver and gold plated pendant - welsh blankets Mari Thomas
Mari Thomas Jewellery Carthenni Embossed: Portcullis Design - Large silver and gold pendant
£440.00
£440.00
carthenni large silver and gold plated pendant - welsh blankets Mari Thomas
Mari Thomas Jewellery Carthenni Embossed: Caernarfon 2 Design - Large Silver and Gold Pendant (last 1 available!)
£440.00
£440.00
carthenni silver and gold plated large pendant - welsh blankets Mari Thomas
Mari Thomas Jewellery Carthenni Embossed: Caernarfon 1 Design- Large silver and gold pendant
£440.00
£440.00
Mari Thomas Jewellery Pages: Triple Silver Pendant
£480.00
£480.00
SOLD OUT
Mari Thomas Jewellery Pages: Silver Statement Neckpiece
£1,950.00
£1,950.00
SOLD OUT
Mari Thomas Jewellery One of a Kind: (No. 9) Solitaire Series 2 Necklace with Princess Cut Diamond
£1,295.00
£1,295.00
SOLD OUT
One of a kind Brushstroke pendant with black diamonds — a darker, more dramatic sweep of paint — Mwclis Arian
Mari Thomas Jewellery One of a Kind: (No. 7) Brushstrokes Pendant with black diamonds
£950.00
£950.00
SOLD OUT
Mari Thomas Jewellery One of a Kind: (No. 11) Cube Pendant with Assher Cut Diamond
£1,550.00
£1,550.00
Mari Thomas Jewellery One of a Kind: ( No.16 ) Bespoke Dadeni Silver and Diamond Neckpiece
£2,900.00
£2,900.00
SOLD OUT
Mari Thomas Jewellery One of a Kind: (No. 12) Bespoke Carved Silver earrings with diamonds
£995.00
£995.00
Mari Thomas Jewellery One of a Kind: (No. 13) Bespoke Carthenni Silver Pendant with Natural Yellow Diamonds
£2,700.00
£2,700.00
SOLD OUT
Mari Thomas Jewellery One of a Kind: (No. 14) Bespoke Silver Glissando pendant with Triangular Diamond
£650.00
£650.00
SOLD OUT
Mari Thomas Jewellery One of a Kind: (No. 5) Bespoke Dathlu Silver Pendant with Old Cut Diamonds
£850.00
£850.00
SOLD OUT
Mari Thomas Jewellery One of a Kind: (No 4.) Solitaire Necklace with Round Brilliant Cut Diamond
£895.00
£895.00
SOLD OUT
Mari Thomas Jewellery One-of-a-Kind: (No.3) Bespoke Cofio Pendant in Silver with Emerald Cut Diamond
£685.00
£685.00
SOLD OUT
One of a Kind: (No 2.) Bespoke Carved Ring in Silver and Diamonds - Mari Thomas Jewellery
Mari Thomas Jewellery One of a Kind: (No 2.) Bespoke Carved Ring in Silver and Diamonds
£550.00
£550.00
Contemporary Welsh gold jewellery designed and made in Wales and inspired by the Welsh landscape. The identity style bracelet is handcarved in 18ct yellow gold
Mari Thomas Jewellery *New* Carved Fine: 18ct Gold Bracelet
£2,400.00
£2,400.00
SOLD OUT
Decorative Concepts torque bangle, black oxidised silver — a bold sketchbook mark — Breichled Arian
Mari Thomas Jewellery Decorative Concepts: Black Silver Large Torque Bangle
£750.00
£750.00
+44 (0) 1558 660001
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