corundum, ruby, history.1, Sri Lanka.12, gems

The prominence of Sri Lankan ruby in historical literature is examined against the rarity of fine, deeply red corundum in the island’s gem production. Drawing on chronicles, literary works, travelers’ accounts, official publications, and reports of the modern gem trade, the author questions the consistent use of ruby as a mineralogically and commercially precise designation. References in the Mahavamsa and Sanskrit and Sinhala literature, together with descriptions by Marco Polo, Ibn Battuta, and later European visitors, establish the stone’s longstanding cultural prestige but do not necessarily demonstrate abundant local production of fine ruby. Accounts of exceptionally large royal rubies are treated skeptically, and confusion with spinel, historically called balas ruby, is suggested. Several possible explanations for the discrepancy between literary reputation and natural occurrence are considered: exhaustion of formerly productive deposits; conventional poetic imagery; substitution of other red stones in jewelry; possible use of reconstructed or treated material; importation of rubies through South Indian trading ports; and reluctance to challenge claims made about royal possessions. These possibilities are advanced as hypotheses rather than established explanations. The discussion then follows the persistence of ruby’s reputation into colonial and modern times, considering the organization of the Sri Lankan gem trade, imported Myanmar rubies, wartime supply disruption, expanding luxury demand, and the influence of synthetic substitutes on appreciation of fine natural stones. Particular attention is given to the commercial effects of converting geuda into blue sapphire by heat treatment. The author argues that Thai participation in this trade strengthened Bangkok’s position, depressed sapphire prices, and disrupted established Sri Lankan intermediary networks, encouraging renewed interest in pink and red corundum. A reported recommendation at the 1989 International Colored Gemstone Association conference in Colombo to include pink sapphire within the ruby classification is discussed in terms of its potential commercial consequences and the need for precise color terminology. The article concludes that Sri Lankan ruby is far more abundant in literature than in nature, and suggests that its historical prominence reflects a limited supply of genuine local stones supplemented by imports and the prestige associated with royal ownership.