Spessartite price: what mandarin garnet is worth per carat
Spessartite garnet — the glowing orange "mandarin" garnet — is valued for a pure, saturated orange that few other gems can match, and it is essentially always untreated.
What drives spessartite price
Spessartite is a manganese-aluminium garnet ranging from yellow-orange to a vivid, almost fluorescent orange. The most valuable is a pure, saturated "mandarin" orange with minimal brown. Colour is the dominant driver, and like other garnets it is not treated.
Colour & clarity
Bright, pure orange commands the premium; brownish or overly dark stones are worth less. Spessartite often contains inclusions, so clean, bright stones are scarcer and more valuable.
Origin & size
Fine "mandarin" material came from Namibia and Nigeria; other sources include Mozambique and Tanzania. Clean stones above a few carats with top colour are uncommon, so per-carat prices rise with size.
Why untreated matters
Spessartite colour is natural — no heat or other enhancement — which collectors value.
Spessartite Garnet price — frequently asked questions
What is mandarin garnet?
A trade name for spessartite garnet of pure, vivid orange colour, originally from Namibia and Nigeria. It is the most prized form of spessartite.
Is spessartite garnet treated?
No. Like most garnets, spessartite is untreated, so its vivid orange colour and clarity are entirely natural.
What affects spessartite value most?
Colour purity and saturation first — a bright, pure orange with little brown — then clarity and size, since clean bright stones are scarce.
How much is spessartite per carat?
Vivid mandarin-orange stones command strong prices that rise with clarity and size. Use the calculator to estimate your stone.
Indicative trade information from the Gem Index universal pricing engine — not a formal appraisal or laboratory certificate. Wholesale, USD. Species, treatment and origin should be confirmed by an accredited gem laboratory before sale. See our full disclaimer and methodology.