When we bring to mind the idea of Welsh or Celtic jewellery design, we are so often, and unsurprisingly, drawn to very traditional imagery such as dragons, daffodils and Celtic knots.

Mari’s contemporary and conceptual approach to Welsh and Celtic design has a freshness to it, though her designs still maintain strong links to their Welsh origin and inspiration.


Inspired by the majesty of the Welsh landscape, and also by traditional crafts such as blanket weaving, Mari has created a new essence of what Celtic design can be in a new contemporary era.

MT Welsh Jewelry

219 products

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Pink 8mm round freshwater pearl stud earrings - Mari Thomas Jewellery
Pink 8-8.5mm round freshwater pearl stud earrings
£96.00
£96.00
Glissando: Silver Circular Pendant
from £290.00
from £290.00
Dathlu / Celebration: Silver Cufflinks - Mari Thomas Jewellery
Dathlu / Celebration: Silver Cufflinks
£220.00
£220.00
Carreg / Stone: Large Silver Pendant - Mari Thomas Jewellery
Carreg / Stone: Large Silver Pendant
£385.00
£385.00
Silver bracelet with chain inspired by brushstrokes
Brushstroke Collection: Silver Bracelet
£155.00
£155.00
Golden Bubbles: Pendant, 18ct yellow gold
£1,900.00
£1,900.00
Bubbles: Silver Cufflinks - Mari Thomas Jewellery
Bubbles: Silver Cufflinks
£155.00
£155.00
NEW
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.
*NEW* Carved: Black Silver Torque Bangle
£695.00
£695.00
NEW
Contemporary Welsh silver jewellery and accessories. Inspired by the beautiful landscape of Wales. This solid silver key ring is designed and handmade in Wales.
*NEW* Carved: Silver Fracture keyring
£145.00
£145.00
SOLD OUT
*NEW* Carved: Narrow Silver Bracelet
£140.00
£140.00
Last Chance: Atgofion / Memories Short Silver Earrings
£190.00
£190.00
Cube: Black Silver Stacker Ring - Mari Thomas Jewellery
Cube: Black Silver Stacker Ring
£140.00
£140.00
Cube: Short Arc Earrings - Black silver - Mari Thomas Jewellery
Cube: Short Arc Earrings - Black silver
£130.00
£130.00
Cube: Black Silver Long Arc Drop Earrings - Mari Thomas Jewellery
Cube: Black Silver Long Arc Drop Earrings
£145.00
£145.00
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.
Carved: Sculptured Black Silver Ring
£235.00
£235.00
Contemporary Welsh silver jewellery. Inspired by Welsh slate and coal and the beautiful landscape of Wales. These black oxidised square stud earrings are designed and handmade in Wales
Carved: Square Black Silver Earrings
£135.00
£135.00
Contemporary Welsh silver jewellery. Inspired by the beautiful landscape of Wales especially slate and anthracite coal. These textured rectangular earrings are designed and handmade in Wales
Carved: Black Silver Rectangle Earrings
£195.00
£195.00
Contemporary Welsh gold and silver jewellery designed and made in Wales and inspired by the Welsh landscape. These earrings are inspired by the Welsh poem Cofio meaning remember by Waldo Williams handcrafted in solid silver with 22ct gold plating.Jewellery
Cofio / Remember: Long Gold and Silver Earrings
£340.00
£340.00
Contemporary Welsh gold and silver jewellery designed and made in Wales and inspired by the Welsh landscape. These cufflinks are inspired by the Welsh poem Cofio meaning remember by Waldo Williams handcrafted in solid silver with 22ct gold plating.
Cofio / Remember: Gold and Silver Cufflinks
£330.00
£330.00
£230.00
Cofio / Remember: Black Silver Bangle - Mari Thomas Jewellery
Cofio / Remember: Black Silver Bangle
£445.00
£445.00
Decorative Concepts: Black Silver Drop Earrings - Mari Thomas Jewellery
Decorative Concepts: Black Silver Drop Earrings
£135.00
£135.00
Decorative Concepts: Black Silver Charm Bracelet - Mari Thomas Jewellery
Decorative Concepts: Black Silver Charm Bracelet
£95.00
£95.00
Decorative Concepts: Rose gold medium pendant - Mari Thomas Jewellery
Decorative Concepts: Rose gold medium pendant
£320.00
£320.00
Decorative Concepts: Rose Gold Small Top Ring - Mari Thomas Jewellery
Decorative Concepts: Rose Gold Small Top Ring
£135.00
£135.00
Decorative Concepts: Rose Gold Drop Pendant - Mari Thomas Jewellery
Decorative Concepts: Rose Gold Drop Pendant
£225.00
£225.00
Decorative Concepts: Rose Gold Medium Earrings - Mari Thomas Jewellery
Decorative Concepts: Rose Gold Medium Earrings
£100.00
£100.00
Memo: Long Silver Paperclip Necklace - Mari Thomas Jewellery
Memo: Long Silver Paperclip Necklace
£460.00
£460.00
Cofio / Remember: Silver Torque Neckpiece - Mari Thomas Jewellery
Cofio / Remember: Silver Torque Neckpiece
£1,100.00
£1,100.00
Cofio / Remember: Silver lapel/tie pin
£110.00
£110.00
£110.00
Decorative Concepts: Large Silver Statement Ring
£230.00
£230.00
Glissando: Small Silver Circular Pendant
£230.00
£230.00
Glissando: Large Silver Pendant
£190.00
£190.00
Dathlu / Celebration: Long Drop Silver Earrings - Mari Thomas Jewellery
Dathlu / Celebration: Long Drop Silver Earrings
£300.00
£300.00
Contemporary Welsh silver jewellery. Inspired by the beautiful rugged landscape of Wales. These textured cufflinks are designed and handmade in Wales
Carved: Square Silver Cufflinks
£160.00
£160.00
£155.00
Bubbles: 18ct Gold Small Earrings - Mari Thomas Jewellery
Golden Bubbles: 18ct Gold Small Earrings
£415.00
£415.00
Contemporary Welsh silver jewellery. Inspired by the beautiful landscape of Wales. This bangle is designed and handmade in Wales
Carved: Silver Fractured Bangle
£655.00
£655.00
Contemporary Welsh silver jewellery. Inspired by the beautiful landscape of Wales. This solid bangle is designed and handmade in Wales UK
Carved: Wide Silver Bangle
£695.00
£695.00
Bubbles: Silver Linked Bracelet - Mari Thomas Jewellery
Bubbles: Silver Linked Bracelet
£560.00
£560.00
Bubbles: Silver Bangle - Mari Thomas Jewellery
Bubbles: Silver Bangle
£1,300.00
£1,300.00
Bubbles: Medium Top Silver Statement Ring - Mari Thomas Jewellery
Bubbles: Medium Top Silver Statement Ring
£345.00
£345.00
SOLD OUT
One of a Kind: ( No.17 ) Bespoke Linear torque bangle with baguette cut diamonds
£1,700.00
£1,700.00
NEW
One of a Kind: ( No.18 ) Bespoke Carreg necklace / brooch in silver with baguette cut diamond
£1,990.00
£1,990.00
One of a Kind: ( No.16 ) Bespoke Dadeni Silver and Diamond Neckpiece
£2,900.00
£2,900.00
carthenni large silver and gold plated pendant - welsh blankets Mari Thomas
Carthenni Embossed: Caernarfon 2 Design - Large Silver and Gold Pendant
£440.00
£440.00
NEW
*NEW* Bubbles: Small Silver Ring
£95.00
£95.00
NEW
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.
*NEW* Carved: Silver torque bangle
£695.00
£695.00
Save 10%
Carved: Silver cufflinks and key ring set
£301.00
£301.00
£335.00
Last Chance: Llawennau / Rejoice Long Silver Pendant with Diamonds
£455.00
£455.00
Pages Collection: Silver Statement Neckpiece
£1,950.00
£1,950.00
Pages Collection: Small Silver Pendant
£170.00
£170.00
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