
Hover to magnify
Hot Diamonds
Black Onyx Square Necklace
£99
This jewel is crafted from genuine Black Onyx, 925 sterling silver, a real hand-set diamond and 18ct gold plate. You need it in your life! The pendant is 8mm x 8mm and supplied with a chain that can be worn at 45cm/18″ or 40cm/16″.
Metal: Sterling Silver, 18ct Gold Plate
Diamond Count: 1x 1.2mm Diamond
Stone Types: Black Onyx, Diamond
Chain Length: 16″ + 2″ Extension
Handcrafted in Sheffield
Made by hand in our atelier, never machine-finished.
Bespoke alterations
Resize, re-metal or reimagine — every piece can be tailored.
Lifetime care
Cleaning, checking and aftercare for the life of the ring.
You may also like

Black Onyx Square Huggie Earrings
£125

Calm Pearl Lunar Bracelet
£99

Delicate Pointed Twist Heart Earrings
£75

Delicate Pointed Twist Heart Necklace
£69

Essence Sunbeam Heart Bracelet
£145

Essence Sunbeam Heart Huggie Earrings
£119

Essence Sunbeam Heart Necklace
£125

Fiji Bangle
£329

Fiji Wave Ring
£109

Golden Edit Soul Earrings
£69
Something a little more personal?
Every Tiago piece can be made bespoke — start with a conversation.