Pisces Gem
Pisces Gem
The stones traditionally assigned to Pisces in Western astrological practice
The Pisces gem, in Western astrological tradition, is the stone or stones associated with the zodiac sign Pisces, covering the calendar period from approximately 19 February to 20 March. Aquamarine and bloodstone are the two stones most commonly cited as Pisces gems in published astrological sources, with aquamarine the more frequently named of the two in the modern English-language trade. These attributions are distinct from the standardised modern birthstone tables published by jewellery industry associations and should not be conflated with them.
The two principal attributions
Aquamarine is the variety of beryl coloured by iron in the blue to blue-green range. The connection to Pisces draws on the sign's water-element association in classical astrological systems and on a long folk tradition linking aquamarine to seafarers, calm waters, and clarity of mind. The stone has been linked to the sign across most twentieth-century astrology references in English and continental European publications, and is the attribution most likely to be found in contemporary trade-facing material.
Bloodstone — the dark green chalcedony with red iron-oxide spots, also called heliotrope — is the older attribution and the one most often given in nineteenth-century English-language sources. The connection draws on the stone's association with healing, protection, and the mystical or contemplative qualities mapped onto Pisces in older astrological traditions. Modern sources typically list bloodstone alongside aquamarine, sometimes giving the wearer a choice between them and sometimes pairing them as primary and secondary attributions.
Other stones — including amethyst, moonstone, and jade — appear sporadically in particular astrological systems but are not standard. Trade reference works generally treat aquamarine and bloodstone as the canonical pairing, and depart from that pairing only when reproducing the conventions of a specific astrological tradition (Vedic, Tibetan, or modern New Age) that is being explicitly named.
Relation to modern birthstone tables
The modern American birthstone table standardised by the Jewelers of America (originally established by the National Association of Goldsmiths in 1912 and revised in subsequent years) assigns amethyst to February and aquamarine to March, by calendar month rather than by zodiac sign. Pisces, which spans both months, therefore overlaps with both. The astrological-sign attributions and the modern monthly birthstone tables are independent systems with different histories, and a buyer choosing on astrological rather than calendar grounds will arrive at different stones than one consulting the trade-association table. Retail staff fielding gift-shopping enquiries should be prepared to clarify which system the customer has in mind before recommending a stone.
In the trade
Astrological-gem inquiries are a recurring source of retail demand and tend to peak around the relevant sign's calendar window. The trade's practical approach is to acknowledge the variation across sources, present the two principal Pisces stones — aquamarine and bloodstone — and let the client choose. Pricing follows the underlying market for each species and bears no relationship to the astrological attribution itself. Aquamarine commands a meaningful range from commercial blue-green to fine Santa Maria saturation, while bloodstone is comparatively inexpensive across the commercial range and is most commonly sold as cabochon-cut or carved material rather than faceted.
For gift purchases tied to a Pisces birthday, the practical recommendation depends on whether the recipient prefers transparent faceted stones or opaque carved material. Aquamarine reads as a refined, classical choice and pairs well with white gold, platinum, and yellow gold; bloodstone reads as a more masculine and historically resonant choice, frequently encountered in signet rings and intaglios. Both are durable enough for daily wear in most settings, with aquamarine at 7.5 to 8 on the Mohs scale and bloodstone at approximately 7.