Dark and distinctly minimalist, this ring set with a faceted labradorite in a solitaire form plays across the hand with a blue flash that, as the hand turns, glides over the stone's dark surface like a narrow streak of cool light. This labradorescence only reveals itself in motion - an ordinary gesture, a handshake or raising a glass makes the stone's brilliance shift in intensity. The simple, slender band draws no attention away from the stone and underlines the modern, understated character of the whole piece.

We assess every labradorite before setting, checking the depth and clarity of the blue flash before it reaches the jeweller's hands. Silver and good stones get more expensive year on year, and pieces like this one are increasingly hard to find, so today's price for this ring is a reasonable one. Refined sterling silver 925 of European quality holds the stone, and the fineness itself confirms the purity of the alloy, which contains no nickel and does not irritate the skin. A layer of rhodium protects the surface from tarnishing and dulling, so the shine lasts longer. The metal also bears the French maker's mark - a legally protected mark registered with the French assay office, which attests to its origin. In jewellery tradition, labradorite has been associated with peace of mind, inspiration and self-belief.

This ring feels at home at a family celebration - with an elegant dress, in the warm light of a reception hall and among classic accessories, where the stone's blue flash stands out clearly against the muted tones of an outfit. It also suits a simple, smooth blouse and a clean-lined skirt, since the minimalist solitaire form needs no further adornment. One turn of the hand is enough for the labradorite's facets to catch the light.