Black Onyx and Diamond Tie Clip spinel a shape that maximises the

a shape that maximises the stone's natural brilliance and gives the piece its strong geometric identity

15 carats of brilliant-cut diamonds in 18k white gold

Kunzite is one of the great romantic stones — its soft

This example displays the variety's signature trichroism — shifting between deep violet-blue and burgundy depending on the light and angle — at its most pronounced

Heliodor is one of the lesser-known members of the beryl family — the same family as emerald and aquamarine — distinguished by its warm golden-yellow colour

Black Onyx and Diamond Tie Clip spinel a shape that maximises the18K White GoldBlack Onyx 2. 01 ctsWhite Diamond . 37 cts