With every order you make from our web site, you help us plant a tree!

We decided to partner with ECOLOGI as a way for us to play a role in helping to revive and restore our planet. Through projects supporting tree planting to community restoration, each purchase you make on line from Mari Thomas sends a percentage of the sale automatically and directly to these projects.  

Ecologi are aligned with our values and are a fantastic gold standard, B - Corp organisation who are authentic and transparent – with their range of projects supported through their organisation being easily accessible. 

See how many trees you have helped us plant so far! Thank you 

For a list of all the other projects we support clink on this link and scroll down.

Support our charities

197 products

SOLD OUT
Cofio / Remember: Silver Cufflinks - Mari Thomas Jewellery
Mari Thomas Jewellery Cofio / Remember: Silver Cufflinks
£230.00
£230.00
Mari Thomas Jewellery Brushstroke Collection: Large Silver Pendant
£295.00
£295.00
Contemporary Welsh silver jewellery. Inspired by the beautiful landscape of Wales. This ring is perfect for a wedding ring both for men and women. Designed and handmade in Wales
Mari Thomas Jewellery *NEW* Carved: Narrow Silver Ring
£120.00
£120.00
Decorative Concepts: Small Black Silver Earrings - Mari Thomas Jewellery
Mari Thomas Jewellery Decorative Concepts: Small Black Silver Earrings
£45.00
£45.00
White 8mm round freshwater pearl stud earrings - Mari Thomas Jewellery
Mari Thomas Jewellery White 7-7.5mm round freshwater pearl stud earrings
£77.00
£77.00
Round 8mm Pink Pearl Pendant - Mari Thomas Jewellery
Mari Thomas Jewellery Round 8-8.5mm pink pearl pendant
£140.00
£140.00
Carreg / Stone: Small Silver Pendant - Mari Thomas Jewellery
Mari Thomas Jewellery Last chance: Carreg / Stone: Small Silver Pendant
£195.00
£195.00
Cofio / Remember: Long Silver Earrings - Mari Thomas Jewellery
Mari Thomas Jewellery Cofio / Remember: Long Silver Earrings
£220.00
£220.00
Contemporary Welsh silver jewellery. Inspired by the beautiful landscape of Wales. These textured rectangular cufflinks in frosted and polished silver are designed and handmade in Wales
Mari Thomas Jewellery Carved: Rectangular Silver Cufflinks
£185.00
£185.00
Contemporary Welsh silver jewellery. Inspired by the beautiful landscape of Wales. These small textured square stud earrings are designed and handmade in Wales
Mari Thomas Jewellery *NEW* Carved: Small square silver stud earrings
£85.00
£85.00
SOLD OUT
Cube: Silver Long Arc Earrings - Mari Thomas Jewellery
Mari Thomas Jewellery Cube: Silver Long Arc Earrings
£155.00
£155.00
Mari Thomas Jewellery Glissando: Small Silver Pendant
£110.00
£110.00
Decorative Concepts: Medium Top Silver Ring - Mari Thomas Jewellery
Mari Thomas Jewellery Decorative Concepts: Medium Top Silver Ring
£95.00
£95.00
Contemporary Welsh silver jewellery. Inspired by the beautiful landscape of Wales. These square textured stud earrings are designed and handmade in Wales
Mari Thomas Jewellery Carved: Square Silver Earrings
£135.00
£135.00
Pink 7.5mm Freshwater Teardrop Pearl Pendant - Mari Thomas Jewellery
Mari Thomas Jewellery Pink 7.5mm freshwater teardrop pearl pendant
£93.00
£93.00
Contemporary Welsh gold and silver jewellery designed and made in Wales and inspired by the Welsh landscape. This bangle is inspired by the Welsh poem Cofio meaning remember by Waldo Williams handcrafted in solid silver with 22ct gold plating.
Mari Thomas Jewellery Cofio / Remember: Gold and Silver Bangle
£590.00
£590.00
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
Mari Thomas Jewellery Cube: Gold and Silver Stud Earrings
£135.00
£135.00
Cofio / Remember: Black Silver Pendant - Mari Thomas Jewellery
Mari Thomas Jewellery Cofio / Remember: Black Silver Pendant
£160.00
£160.00
SOLD OUT
Mari Thomas Jewellery Memo: Silver Paperclip Earrings
£40.00
£40.00
Cube: Silver 3 Cube, Stacker Bangle - Mari Thomas Jewellery
Mari Thomas Jewellery Cube: Silver 3 Cube, Stacker Bangle
£400.00
£400.00
Cube: 1 Cube Silver Stacker Bangle - Mari Thomas Jewellery
Mari Thomas Jewellery Cube: Single Cube Silver Stacker Bangle
£320.00
£320.00
Contemporary Welsh silver jewellery. Inspired by the beautiful landscape of Wales. These textured rectangular earrings are designed and handmade in Wales
Mari Thomas Jewellery Carved: Silver Rectangle earrings
£185.00
£185.00
Mari Thomas Jewellery Cube: Black Silver Stud Earrings
£95.00
£95.00
Decorative Concepts: Medium Black Silver Pendant - Mari Thomas Jewellery
Mari Thomas Jewellery Decorative Concepts: Medium Black Silver Pendant
£220.00
£220.00
Decorative Concepts: Rose Gold Small Pendant - Mari Thomas Jewellery
Mari Thomas Jewellery Decorative Concepts: Rose Gold Small Pendant
£175.00
£175.00
Mari Thomas Jewellery Brushstroke: Silver Earrings
£240.00
£240.00
Contemporary Welsh silver jewellery. Inspired by the beautiful landscape of Wales. These small textured rectangular stud earrings are designed and handmade in Wales
Mari Thomas Jewellery *NEW* Carved: Small silver rectangle stud earrings
£90.00
£90.00
SOLD OUT
Mari Thomas Jewellery Pages Collection: Silver Bracelet
£185.00
£185.00
SOLD OUT
Mari Thomas Jewellery Pages Collection - Silver Stud Earrings
£95.00
£95.00
Contemporary Welsh gold and silver jewellery designed and made in Wales and inspired by the Welsh landscape. This ring suitable for men or women is handcrafted in solid silver with 22ct gold plating
Mari Thomas Jewellery Cofio / Remember: Gold and Silver Ring
£330.00
£330.00
Contemporary Welsh silver jewellery. Inspired by the beautiful landscape of Wales especially slate and anthracite coal. This textured rectangular pendant is designed and handmade in Wales
Mari Thomas Jewellery Carved: Black Silver Rectangle Pendant
£195.00
£195.00
Decorative Concepts: Small Pendant- Black silver - Mari Thomas Jewellery
Mari Thomas Jewellery Decorative Concepts: Small Pendant- Black silver
£95.00
£95.00
Mari Thomas Jewellery Memo: Long Silver Paperclip Earrings
£65.00
£65.00
Mari Thomas Jewellery Memo: Silver Necklace
£320.00
£320.00
SOLD OUT
Pink 8mm round freshwater pearl stud earrings - Mari Thomas Jewellery
Mari Thomas Jewellery Pink 8-8.5mm round freshwater pearl stud earrings
£96.00
£96.00
Mari Thomas Jewellery Glissando: Medium Silver Pendant
£140.00
£140.00
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
from £250.00
from £250.00
Mari Thomas Jewellery Linear: Triple Drop Silver Pendant
from £320.00
from £320.00
Mari Thomas Jewellery Brushstroke Collection: Silver Bracelet
£155.00
£155.00
Bubbles: Silver Cufflinks - Mari Thomas Jewellery
Mari Thomas Jewellery Bubbles: Silver Cufflinks
£155.00
£155.00
Mari Thomas Jewellery Bubbles: Silver Pin / Brooch
£70.00
£70.00
Dathlu / Celebration: Small Silver Pendant - Mari Thomas Jewellery
Mari Thomas Jewellery Cariad / Love: Small Silver Pendant
£195.00
£195.00
Mari Thomas Jewellery Pages Collection: Large Silver Pendant
£200.00
£200.00
Cube: Black Silver 1 Cube Bangle - Mari Thomas Jewellery
Mari Thomas Jewellery Cube: Black Silver 1 Cube Bangle
£155.00
£155.00
Cofio / Remember: Black Silver Ring - Mari Thomas Jewellery
Mari Thomas Jewellery Cofio / Remember: Black Silver Ring
£230.00
£230.00
Cofio / Remember: Long Black Silver Earrings - Mari Thomas Jewellery
Mari Thomas Jewellery Cofio / Remember: Long Black Silver Earrings
£220.00
£220.00
Cofio / Remember: Black Silver Bangle - Mari Thomas Jewellery
Mari Thomas Jewellery Cofio / Remember: Black Silver Bangle
£445.00
£445.00
Decorative Concepts: Black Silver Drop Pendant - Mari Thomas Jewellery
Mari Thomas Jewellery Decorative Concepts: Black Silver Drop Pendant
£125.00
£125.00
Decorative Concepts: Black Silver Drop Earrings - Mari Thomas Jewellery
Mari Thomas Jewellery Decorative Concepts: Black Silver Drop Earrings
£135.00
£135.00


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