Here, at Mari Thomas, you will find her contemporary, individual and unique jewellery in gold and silver sparklingly embellished and enhanced with carefully sourced and selected conflict free diamonds.

We can design and create bespoke commissions for that special someone, or that special day, or maybe add some sparkle to an existing piece to give it that extra something.

Designed and made in Wales UK

MT Diamond Jewellery

27 products

£
£
Glissando: Small 9ct Rose Gold Pendant with diamonds - Mari Thomas Jewellery
Glissando: Small 9ct Rose Gold Pendant with diamonds
£525.00
£525.00
Glissando: 9ct Rose Gold Circular Pendant with Diamonds - Mari Thomas Jewellery
Glissando: 9ct Rose Gold Circular Pendant with Diamonds
£1,850.00
£1,850.00
Glissando: Large 9ct Rose Gold Pendant with Diamonds - Mari Thomas Jewellery
Glissando: Large 9ct Rose Gold Pendant with Diamonds
£1,340.00
£1,340.00
Glissando: Small 18ct White Gold Pendant with diamonds - Mari Thomas Jewellery
Glissando: Small 18ct White Gold Pendant with diamonds
£1,350.00
£1,350.00
Glissando: Large 18ct White Gold Pendant with diamonds - Mari Thomas Jewellery
Glissando: Large 18ct White Gold Pendant with diamonds
£2,800.00
£2,800.00
Glissando: Small 18ct White Gold Circular Pendant with diamonds
£2,950.00
£2,950.00
SOLD OUT
Bubbles: One of a kind: Earrings in 18ct yellow gold set with diamonds.
£2,400.00
£2,400.00
Bubbles: One of a kind: 18ct Gold Pendant set with Diamonds
£8,900.00
£8,900.00
Dathlu / Celebration: Small Silver Pendant with Diamond
£245.00
£245.00
Dathlu / Celebration: Long Silver Pendant with Diamonds
£455.00
£455.00
Dathlu / Celebration: Short Drop Silver Earrings with Diamonds - Mari Thomas Jewellery
Dathlu / Celebration: Short Drop Silver Earrings with Diamonds
£340.00
£340.00
Last Chance: Atgofion / Memories Long Silver Pendant with Diamonds
£455.00
£455.00
One of a Kind: (No. 13) Bespoke Carthenni Silver Pendant with Natural Yellow Diamonds
£2,700.00
£2,700.00
One of a Kind: (No. 14) Bespoke Silver Glissando pendant with Triangular Diamond
£650.00
£650.00
Solitaire: Black Silver bangle with Diamond
£950.00
£950.00
SOLD OUT
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. 11) Cube Pendant with Assher Cut Diamond
£1,550.00
£1,550.00
SOLD OUT
One of a Kind: (No 1.) Bespoke Silver and Diamond Bubbles Necklace - Mari Thomas Jewellery
One of a Kind: (No 1.) Bespoke Silver and Diamond Bubbles Necklace
£995.00
£995.00
SOLD OUT
One of a Kind: (No. 10) Bespoke Gyda'n Gilydd Silver Pendant with Marquise Diamond
£985.00
£985.00
SOLD OUT
One of a Kind: (No. 12) Bespoke Carved Silver earrings with diamonds
£995.00
£995.00
SOLD OUT
One of a Kind: (No 2.) Bespoke Carved Ring in Silver and Diamonds - Mari Thomas Jewellery
One of a Kind: (No 2.) Bespoke Carved Ring in Silver and Diamonds
£550.00
£550.00
SOLD OUT
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: (No. 8) Bespoke Decorative Concepts Silver Pendant with Oval Diamond
£995.00
£995.00
SOLD OUT
One of a Kind: (No. 5) Bespoke Dathlu Silver Pendant with Old Cut Diamonds
£850.00
£850.00
SOLD OUT
One of a Kind: (No 4.) Solitaire Necklace with Round Brilliant Cut Diamond
£895.00
£895.00
SOLD OUT
One of a Kind: (No 6.) Bespoke Memo Pendant with Rose Cut Diamond.
£685.00
£685.00
SOLD OUT
One of a Kind: (No. 7) Brushstrokes Pendant with black diamonds
£950.00
£950.00
+44 (0) 1558 660001
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