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A REFLECTION OF ANCIENT INDIAN SCIENCE
The Business Guardian
|April 19, 2025
Nestled in the tranquil temple town of Aranmula in Kerala, a mysterious mirror has silently reflected the brilliance of Indian metallurgy, spiritual symbolism, and artisanal heritage for over five centuries.
Known as the Aranmula Kannadi, or Aranmula Mirror, this rare artefact is no ordinary mirror — it is a masterpiece of ancient science and sacred tradition, and its making remains one of India's best-kept artisanal secrets.
The Aranmula Kannadi is a front-surface reflective mirror, a rarity even by today's industrial standards.
While modern mirrors rely on a glass base coated with metallic films, the Aranmula mirror eliminates the glass.
It is crafted entirely from a special high-tin bronze alloy, resulting in a unique, distortion-free reflection that doesn't suffer from the secondary images seen in typical back-coated glass mirrors.
Scientific studies have confirmed that this mirror is made of a delta phase bronze — an intermetallic compound of copper and tin (Cu31Sn38) — with a tin composition of about 32.6%.
This precision alloy, referred to as high-tin 'delta' bronze, is metallurgically complex to reproduce, even with modern technology.
What's astounding is that the exact formulation and process remain guarded within a single lineage of artisans in Aranmula, passed down from generation to generation as an oral family secret.
BORN OF LEGEND, ROOTED IN RITUAL
The origins of the Aranmula Kannadi are woven into the mythos of the Aranmula Parthasarathy Temple, dedicated to Lord Krishna.
Legend tells of skilled artisans summoned from Tamil Nadu for temple construction who offered a gleaming crown fitted with a metal mirror to the deity.
Impressed, the king asked them to settle in Aranmula, where the mirror-making legacy took root.
Locals believe a woman from one of these families received the secret formula in a divine dream.
Since then, the tradition has stayed within the Vishwakarma community — a testament to both spiritual calling and metallurgical mastery.
More than a decorative object, the mirror holds ceremonial weight.
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