Most people think garnet is red. That misunderstanding is one of the great gifts in gemology — because the garnet family spans every colour in the spectrum, including some of the rarest and most spectacular stones on earth. Red is merely where the story begins.
Garnet is not a single mineral — it is a group of related silicate minerals that share the same crystal structure but differ in chemical composition. That variation in chemistry produces a colour range that no other single mineral group can match: deep red, fiery orange, vivid green, golden yellow, raspberry pink, purple, and — in the rarest cases — a colour change that rivals alexandrite itself.
The six major garnet species are pyrope, almandine, spessartine, grossular, andradite, and uvarovite. Most garnets sold commercially are mixtures of two or more of these end-members, which is why the colour range is essentially unlimited. A stone can be described as pyrope-spessartine or grossular-andradite depending on where its chemistry sits on the spectrum between species.
The most astonishing garnets are the colour change varieties — pyrope-spessartine mixtures that shift from bluish-green or teal in daylight to purplish-red or raspberry under incandescent light. The mechanism is identical to alexandrite: chromium and vanadium absorption positioned at the green-red boundary, sensitive to the spectral composition of the light source.
Fine colour change garnets from Tanzania, Madagascar, and Sri Lanka can rival or exceed alexandrite in the strength of their colour shift — and they occur in larger sizes and with better clarity than most alexandrite. They remain far less known than they deserve to be, which means the price has not yet caught up with the rarity. That window exists now.
From the Métamorphism collection
Mandarin spessartine in a radiating crown. Orange at its most uncompromising.
Spessartine pendant, earrings and chain. The full expression of the stone in yellow and white gold.
Tsavorite garnet and aquamarine in white gold. Vivid green grounded by cool blue.
Other exceptional coloured stones
From Mandarin spessartine to colour change — let's find the right stone for your piece.
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