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

Cofio / Remember: Black Silver Ring - Mari Thomas Jewellery
Mari Thomas Jewellery Cofio / Remember: Black Silver Ring
from £230.00
from £230.00
Cofio / Remember: Black Silver Bangle - Mari Thomas Jewellery
Mari Thomas Jewellery Cofio / Remember: Black Silver Bangle
£470.00
£470.00
Mari Thomas Jewellery Carved: Black Silver Rectangle Pendant
£245.00
£245.00
Decorative Concepts small pendant, black oxidised silver — covered in Mari's own handwriting — Mwclis Arian
Mari Thomas Jewellery Decorative Concepts: Small Pendant- Black silver
£137.00
£137.00
Decorative Concepts drop earrings, black oxidised silver — tracing the shape of a sketched line on paper — Clustdlysau Arian
Mari Thomas Jewellery Decorative Concepts: Black Silver Drop Earrings
£155.00
£155.00
SOLD OUT
Decorative Concepts drop earrings, tracing a sketched line on paper — 18ct rose gold plated silver — Clustdlysau Arian ac Aur
Mari Thomas Jewellery Decorative Concepts: Rose Gold Drop Earrings
£235.00
£235.00
Mari Thomas Jewellery Memo: Long Silver Paperclip Earrings
£70.00
£70.00
Mari Thomas Jewellery Memo: Silver Necklace
£360.00
£360.00
Pink 8mm round freshwater pearl stud earrings - Mari Thomas Jewellery
Mari Thomas Jewellery Pink 8-8.5mm round freshwater pearl stud earrings
£127.00
£127.00
Carreg / Stone: Silver Ring - Mari Thomas Jewellery
Mari Thomas Jewellery Last chance: Carreg / Stone: Silver Ring
£90.00
£90.00
Contemporary Welsh silver jewellery. Inspired by the beautiful rugged landscape of Wales. This sculptured ring is designed and handmade in Wales
Mari Thomas Jewellery Carved: Long Silver Ring
£295.00
£295.00
Mari Thomas Jewellery Linear: Triple Drop Silver Pendant
£385.00
£385.00
Bubbles sterling silver pin brooch, front view
Mari Thomas Jewellery Bubbles: Silver Pin / Brooch
£90.00
£90.00
Dathlu / Celebration: Small Silver Pendant - Mari Thomas Jewellery
Mari Thomas Jewellery Cariad / Love: Small Silver Pendant
£195.00
£195.00
Mari Thomas Jewellery *NEW* Carved: Narrow Silver Bracelet
£155.00
£155.00
Mari Thomas Jewellery Glissando: Small silver stud earrings
£95.00
£95.00
Pink 9mm Freshwater Teardrop Pearl Pendant - Mari Thomas Jewellery
Mari Thomas Jewellery Pink 9mm freshwater teardrop pearl pendant
£112.00
£112.00
Cube: Black Silver Long Arc Drop Earrings - Mari Thomas Jewellery
Mari Thomas Jewellery Cube: Black Silver Long Arc Drop Earrings
£180.00
£180.00
SOLD OUT
Cube: Black Silver 1 Cube Bangle - Mari Thomas Jewellery
Mari Thomas Jewellery Cube: Black Silver 1 Cube Bangle
£185.00
£185.00
Carved ring, sterling silver and black oxidised silver — textured like Welsh slate — Modrwy Arian
Mari Thomas Jewellery Carved: Long Black Silver Ring
from £260.00
from £260.00
Cofio / Remember: Long Black Silver Earrings - Mari Thomas Jewellery
Mari Thomas Jewellery Cofio / Remember: Long Black Silver Earrings
£230.00
£230.00
Decorative Concepts drop pendant, a considered mark in black oxidised silver — Mwclis Arian
Mari Thomas Jewellery Decorative Concepts: Black Silver Drop Pendant
£167.00
£167.00
Decorative Concepts large studs, 18ct rose gold plated silver — covered in Mari's own handwriting at bold scale — Clustdlysau Arian ac Aur
Mari Thomas Jewellery Decorative Concepts: Rose Gold Large Earrings
£155.00
£155.00
Mari Thomas Jewellery Linear: Silver Cufflinks
£195.00
£195.00
SOLD OUT
Mari Thomas Jewellery Gyda'n Gilydd / Together: Silver Lapel / Tie Pin
£95.00
£95.00
Mari Thomas Jewellery Carthenni Silhouette: Caernarfon Hatch Design - Large silver pendant
£680.00
£680.00
Caernarfon long pendant, sterling silver — the Welsh weave stretched into a linear form — Mwclis Arian
Mari Thomas Jewellery Carthenni Silhouette: Caernarfon Long Design - Silver pendant
£230.00
£230.00
Narrow Silk Scarf - Limited Collection - Mari Thomas Jewellery
Mari Thomas Jewellery Limited Edition: Narrow Silk Scarf
£90.00
£90.00
Mari Thomas Jewellery Glissando: Silver Circular Pendant
£350.00
£350.00
Dathlu / Celebration: Silver Cufflinks - Mari Thomas Jewellery
Mari Thomas Jewellery Dathlu / Celebration: Silver Cufflinks
£270.00
£270.00
SOLD OUT
Golden Bubbles small pendant, 18ct gold — clustered circles inspired by rising champagne bubbles — Mwclis Aur
Mari Thomas Jewellery Golden Bubbles: 18ct yellow gold Pendant
£2,230.00
£2,230.00
Contemporary Welsh silver jewellery. Inspired by the beautiful landscape of Wales. This solid bangle is designed and handmade in Wales UK
Mari Thomas Jewellery Carved: Wide Silver Bangle
£695.00
£695.00
SOLD OUT
Bubbles statement ring, sterling silver — clustered circles inspired by rising champagne bubbles — Modrwy Arian
Mari Thomas Jewellery Bubbles: Medium Top Silver Statement Ring
from £410.00
from £410.00
Mari Thomas Jewellery Silver coin fresh water pearl pendant
£55.00
£55.00
Mari Thomas Jewellery Silver gold plated coin fresh water pearl pendant
£75.00
£75.00
Mari Thomas Jewellery *NEW* Carved silver narrow bangle
£420.00
£420.00
Mari Thomas Jewellery Cariad / Love: Short Drop Silver Earrings
£210.00
£210.00
Mari Thomas Jewellery *New* Glissando: Small bar pendant
£150.00
£150.00
Bubbles small ring, sterling silver — clustered circles inspired by rising champagne bubbles — Modrwy Arian
Mari Thomas Jewellery *NEW* Bubbles: Small Silver Ring
£115.00
£115.00
Mari Thomas Jewellery Last Chance: OMA Silver Bracelet (last 1 available!)
£100.00
£100.00
Contemporary Welsh silver jewellery. Inspired by the beautiful landscape of Wales especially slate and coal. This torque cuff bangle is designed and handmade in Wales. Suitable for men or women.
Mari Thomas Jewellery *NEW* Carved: Black Silver Torque Bangle
£695.00
£695.00
SOLD OUT
Mari Thomas Jewellery One of a Kind: (No 15.) Bespoke Silver and Diamond Slice Pendant
£1,550.00
£1,550.00
Mari Thomas Jewellery Pages: Small Silver Pendant
£185.00
£185.00
SOLD OUT
Mari Thomas Jewellery One of a Kind: (No. 10) Bespoke Gyda'n Gilydd Silver Pendant with Marquise Diamond
£985.00
£985.00
SOLD OUT
Mari Thomas Jewellery One of a Kind: (No 6.) Bespoke Memo Pendant with Rose Cut Diamond.
£685.00
£685.00
Grey 7mm Freshwater Teardrop Pearl Crook Earrings - Mari Thomas Jewellery
Mari Thomas Jewellery Grey 7.5mm freshwater teardrop pearl drop earrings
£80.00
£80.00
Grey 7mm Round Freshwater Pearl Stud Earrings - Mari Thomas Jewellery
Mari Thomas Jewellery Grey 7-7.5mm round freshwater pearl stud earrings
£77.00
£77.00
Grey 8mm round Freshwater pearl stud earrings - Mari Thomas Jewellery
Mari Thomas Jewellery Grey 8-8.5mm round freshwater pearl stud earrings
£127.00
£127.00
Cube: Short Arc Earrings - Black silver - Mari Thomas Jewellery
Mari Thomas Jewellery Cube: Short Arc Earrings in black silver
£165.00
£165.00
Contemporary Welsh silver jewellery. Inspired by the beautiful landscape of Wales especially slate and anthracite coal. This sculptured ring is designed and handmade in Wales.
Mari Thomas Jewellery Carved: Sculptured Black Silver Ring
£295.00
£295.00
+44 (0) 1558 660001
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