The familiar garnet image is a dark red stone in old jewellery. The family is much more varied, and its general name gives too little information for comparison.

Names to remember

Garnets are related minerals, often with mixed compositions. Tsavorite and demantoid are green garnets from different mineralogical categories. Spessartine is known for orange shades; rhodolite for purplish red. Colour-change garnets also exist. These differences cannot be reduced to a single cheap-to-expensive scale.

A comparison checklist

Record the identified variety, dimensions, observed colour and documents. If offers only say “natural garnet”, ask for detail before comparing price per carat. A green photograph cannot separate tsavorite, demantoid and other green gems.

For new jewellery, begin with design. Bright orange may provide contrast, while deep red suits a restrained combination. Do not buy a variety merely because its name is unfamiliar.

Older jewellery as a whole

In inherited brooches or necklaces, matching, replacements and setting condition matter too. Request examination of the entire item rather than assuming every stone is identical.

Read ruby, spinel and garnet for red stones. Where a name is uncertain, gemmological identification establishes an accurate description.