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

180 products

Cube: Black Silver Ring - Mari Thomas Jewellery
Mari Thomas Jewellery Cube: Black Silver Ring
£110.00
£110.00
Cube: Black Silver 3 Cube Stacker Bangle - Mari Thomas Jewellery
Mari Thomas Jewellery Cube: Black Silver 3 Cube Stacker Bangle
£450.00
£450.00
Cube: Black Silver 3 Cube Bangle - Mari Thomas Jewellery
Mari Thomas Jewellery Cube: Black Silver 3 Cube Bangle
£300.00
£300.00
Cube: 1 Cube Black SIlver Stacker Bangle - Mari Thomas Jewellery
Mari Thomas Jewellery Cube: Single Cube Black Silver Stacker Bangle
from £320.00
from £320.00
SOLD OUT
Mari Thomas Jewellery Carved: Rectangular Black Silver Cufflinks
£185.00
£185.00
Contemporary Welsh gold and silver jewellery designed and made in Wales and inspired by the Welsh landscape. This lapel pin 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 lapel / tie pin
£150.00
£150.00
Cofio / Remember: Black Silver Cufflinks - Mari Thomas Jewellery
Mari Thomas Jewellery Cofio / Remember: Black Silver Cufflinks
£230.00
£230.00
Cube: Black Silver Drop Pendant - Mari Thomas Jewellery
Mari Thomas Jewellery Cube: Black Silver Drop Pendant
£165.00
£165.00
Cube: Black Silver 3 Drop Pendant - Mari Thomas Jewellery
Mari Thomas Jewellery Cube: Black Silver 3 Drop Pendant
£280.00
£280.00
Mari Thomas Jewellery Carved: Black Silver Square Pendant
£210.00
£210.00
Mari Thomas Jewellery Carved: Black Silver Arc necklace
£580.00
£580.00
Decorative Concepts: Large Black Silver Statement Ring - Mari Thomas Jewellery
Mari Thomas Jewellery Decorative Concepts: Large Black Silver Statement Ring
from £230.00
from £230.00
Decorative Concepts: Medium Top Black Silver Ring - Mari Thomas Jewellery
Mari Thomas Jewellery Decorative Concepts: Medium Top Black Silver Ring
£115.00
£115.00
Decorative Concepts: Statement Black Silver Earrings - Mari Thomas Jewellery
Mari Thomas Jewellery Decorative Concepts: Statement Black Silver Earrings
£355.00
£355.00
Decorative Concepts: Large Black Silver Pendant - Mari Thomas Jewellery
Mari Thomas Jewellery Decorative Concepts: Large Black Silver Pendant
£680.00
£680.00
Decorative Concepts: Black Silver Lapel Pin - Mari Thomas Jewellery
Mari Thomas Jewellery Decorative Concepts: Black Silver Lapel Pin
£92.00
£92.00
Decorative Concepts: Black Silver Cufflinks - Mari Thomas Jewellery
Mari Thomas Jewellery Decorative Concepts: Black Silver Cufflinks
£220.00
£220.00
Decorative Concepts: Rose gold medium top ring - Mari Thomas Jewellery
Mari Thomas Jewellery Decorative Concepts: Rose gold medium top ring
from £230.00
from £230.00
Decorative Concepts: Rose Gold Large pendant - Mari Thomas Jewellery
Mari Thomas Jewellery Decorative Concepts: Rose Gold Large pendant
£890.00
£890.00
Welsh gold ring inspired by the strata of Welsh slate handcrafted and handmade in 18ct rose red gold
Mari Thomas Jewellery *NEW* Linear Fine: Narrow 18ct Rose Gold Ring
from £870.00
from £870.00
Linear Fine: Long 18ct Gold Earrings - Mari Thomas Jewellery
Mari Thomas Jewellery Linear Fine: Long 18ct Gold Earrings
£1,990.00
£1,990.00
Decorative Concepts: Statement Silver Earrings - Mari Thomas Jewellery
Mari Thomas Jewellery Decorative Concepts: Statement Silver Earrings
from £355.00
from £355.00
Decorative Concepts: Silver Cufflinks - Mari Thomas Jewellery
Mari Thomas Jewellery Decorative Concepts: Silver Cufflinks
£220.00
£220.00
Mari Thomas Jewellery Carved: Silver Fractured Earrings
£170.00
£170.00
Mari Thomas Jewellery Carved: Rectangular Silver Lapel / Tie pin
£89.00
£89.00
Mari Thomas Jewellery Golden Bubbles: 18ct Gold Bracelet
£2,230.00
£2,230.00
Mari Thomas Jewellery Golden Bubbles: 18ct Gold Cufflinks
£3,300.00
£3,300.00
Mari Thomas Jewellery Bubbles: Large Top Silver Statement Ring,
£520.00
£520.00
Brushstroke Collection: Silver Bangle - Mari Thomas Jewellery
Mari Thomas Jewellery Brushstroke Collection: Silver Bangle
£1,900.00
£1,900.00
Mari Thomas Jewellery Brushstroke: Silver Cufflinks
£185.00
£185.00


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