The Garuda Purana is one of the eighteen major Puranas of Hindu literature, composed and elaborated over a long period from approximately the first millennium of the common era through the medieval period. Among its many subjects, the text contains an extensive section on gems, the Ratna-Pariksha or examination of gems, that codifies the classical Indian classification of nine principal gemstones, their origins, their qualities, and their ritual and astrological associations. The text remains one of the principal sources for the Vedic gem tradition and is referenced in contemporary Indian jewellery practice and in the astrological gemstone trade.

The nine gems

The Navaratna, the nine gems, are codified in the Garuda Purana and elsewhere in the classical Indian textual tradition as a set of stones associated with the nine planetary influences of Vedic astrology. The set is: ruby (manik) for the Sun; pearl (moti) for the Moon; red coral (moonga) for Mars; emerald (panna) for Mercury; yellow sapphire (pukhraj) for Jupiter; diamond (heera) for Venus; blue sapphire (neelam) for Saturn; hessonite garnet (gomedh) for Rahu (the ascending lunar node); and cat's eye chrysoberyl (lehsuniya) for Ketu (the descending lunar node).

The Navaratna is more than a list. The Garuda Purana and related texts prescribe the placement of the stones in a specific configuration when set together: the ruby in the centre representing the Sun, with the other eight stones arranged in a fixed pattern around it. A Navaratna pendant or ring set in this configuration is regarded in the tradition as channelling balanced planetary influence regardless of the wearer's specific natal chart, and the form remains popular in contemporary Indian jewellery.

Examination criteria

The Garuda Purana's gem examination chapters describe the qualities to be sought in fine specimens and the qualities to be avoided. For ruby, the text emphasises a colour resembling the bandhuka flower (a red dahlia-like blossom) and the absence of inclusions or cloudy zones. For pearl, the text describes the desired colour as resembling moonlight on water and the surface as smooth as butter. For emerald, the colour is compared to the throat of a peacock or to the wet leaf of a young plant. The visual standards described in the text correspond closely to what the modern trade would describe as fine pigeon's blood ruby, fine quality natural saltwater pearl, and fine vibrant green emerald.

The text also addresses faults to be avoided. Stones with cracks, with cloudy interiors, with off-colour zoning, with double points (referring to twinning), and with internal cavities are all rejected. Synthetic and imitation stones are not addressed in the original text, which predates the development of artificial gemstone production. Later Sanskrit literature on gems, including the Ratnasamgraha and the Mughal-period gemological treatises, addresses imitations and adulterations directly.

Origin and provenance

The Garuda Purana identifies geographical origins for several of the nine gems that correspond to ancient trade-known sources. Ruby is associated with mountains in the south, generally taken to refer to the Burmese sources via the trade routes through Bengal. Diamond is associated with rivers and with mines in the Vindhya range, referring to the alluvial diamond deposits of the Krishna and Godavari river systems in the Deccan plateau, which were the principal world source of diamond before the eighteenth century. Pearl is associated with the southern seas, referring to the Gulf of Mannar pearl fisheries of southern India and Sri Lanka.

The textual identifications correspond to the actual ancient trade in gems. Indian-origin diamond, Indian and Sri Lankan pearl, Burmese ruby, and Indian and Burmese sapphire were the principal supplies for Indian and Persian markets through the medieval period and into the Mughal era. The Garuda Purana descriptions of these gems and their provenance can be read as evidence of the trade as it existed at the time of textual codification.

Ritual and prescription

The Garuda Purana and the related astrological literature prescribe specific gemstones for specific persons based on natal chart analysis. The principle is that an individual whose natal Saturn is well-placed and beneficial should wear blue sapphire, while one whose Saturn is afflicted or malefic should not. The same logic applies to each of the nine planets and their associated stones. Astrological gem prescription is a substantial industry in modern India, with both qualified astrologers and self-taught practitioners advising clients on which stones to wear and which to avoid.

The prescription practice has trade implications. The Indian astrological gem market drives substantial demand for ruby, yellow sapphire, blue sapphire, hessonite, and cat's eye, often at quality levels and price points that the Western jewellery trade would consider intermediate rather than fine. The market accommodates a range of price points by quality, and certified astrological gemstones (with reports specifying species, weight, and absence of synthetic origin) are a distinct trade category.

Contemporary relevance

For the modern trade outside India, the Garuda Purana tradition is significant for several reasons. It is one of the principal documentary sources for the historical use of corundum, diamond, and chrysoberyl in the South Asian gem trade. The Navaratna form remains in continuous production and is sold globally. The astrological gem trade in India is among the largest national markets for coloured stone and has direct effects on price and supply for several species, particularly hessonite and cat's eye chrysoberyl, where the Indian astrological market accounts for a significant share of global demand.

The text also illustrates the considerable continuity of gemological aesthetic standards across cultures and centuries. The qualities described in the Garuda Purana for fine ruby, fine pearl, and fine emerald correspond closely to what modern gemological laboratories certify as the highest grades. The descriptive language is metaphorical rather than quantitative, but the visual character it points to is recognisable in modern fine material.