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Chrysoberyl Cat's Eye is the mineralogical species behind Lehsunia — the primary Ketu gem — with honey-yellow chatoyancy prized in Vedic as…
Chrysoberyl is beryllium aluminate — BeAl₂O₄ — with Mohs hardness 8.5. Cat's eye variety shows chatoyancy from fine needle inclusions. Alexandrite is colour-change chrysoberyl.
Lehsunia in Jyotish specifically means chrysoberyl cat's eye for Ketu — not quartz tiger's eye. Honey-yellow to greenish honey with sharp band is ideal. Gemstone remedies are chart-specific. Always consult a qualified Jyotish astrologer before wearing any stone for planetary purposes.
Sri Lanka supplies most fine cat's eye chrysoberyl. India, Brazil, and East Africa also produce material.
| Mineral family | Chrysoberyl (oxide) |
| Ketu variety | Cat's eye chrysoberyl |
| Mohs hardness | 8.5 |
| Vedic association | Ketu — Lehsunia (primary species) |
Wear on Tuesday or Thursday (traditions vary for Ketu) on middle or ring finger in silver or Panchdhatu. Chant Ketu mantra 108 times after purification with black blanket or sesame offering.
Sharp, centered chatoyant band that moves across the dome is mandatory. Milky or weak band stones are rejected for Jyotish.
Ketu gems are potent — never wear without qualified chart analysis.
Prescribed during Ketu dasha/antardasha or when Ketu requires structured spiritual channeling — rarely for beginners.
May suit mystics, researchers, and those on renunciant paths when Ketu is yogakaraka or otherwise supportive in chart.
Gemstone remedies are chart-specific. Always consult a qualified Jyotish astrologer before wearing any stone for planetary purposes.
Associated with spiritual insight, detachment from material obsession, psychic protection, and past-life karma resolution under Ketu.
Chrysoberyl durability supports long-term ring wear among the hardest gem minerals.
Sharp cat's eye phenomenon provides clear authentication versus simulants.
Honey cat's eye chrysoberyl is standard Lehsunia. Alexandrite is rare colour-change variety — different market.
Quartz tiger's eye is NOT chrysoberyl — verify species before Ketu purchase.
Synthetic cat's eye fiber optics exist — show parallel perfect lines unlike natural needles.
Sharp band, high transparency, and large size escalate price rapidly. Fine Sri Lankan cat's eye rivals corundum in cost per carat.
For Jyotish, band sharpness trumps flawless body clarity.
| Chatoyancy | Sharp single band moving across dome |
| Colour | Honey yellow to greenish honey |
| Species | Chrysoberyl — not quartz |
| Treatment | Natural cat's eye only |
Cabochon rings in silver are classic Ketu mounts. High-domed cabochons maximize chatoyancy.
Protective bezels recommended though hardness is high — band visibility matters more than open prongs.
Very durable — soap and water cleaning safe. Excellent for daily wear among Ketu options.
Avoid rough abrasion on dome — chatoyancy depends on surface polish.
Tiger's eye quartz sold as Lehsunia — species fraud for Ketu remedies.
Fiber-optic synthetic cat's eye with too-perfect lines. Apatite and tourmaline cat's eyes are different species.
Ketu Lehsunia is chrysoberyl cat's eye (hardness 8.5). Tiger's eye is quartz — different species and classical status. Verify before buying.
Honey-coloured chrysoberyl with sharp, mobile chatoyant band centered on cabochon dome. Weak band rejected for Jyotish.
Alexandrite is colour-change chrysoberyl — collector gem. Ketu remedy specifically means cat's eye chrysoberyl, not alexandrite.
Ketu stones are considered highly potent like Rahu gems — mandatory astrological consultation before wear.
Tuesday or Thursday per lineage — during Ketu Hora. Follow your astrologer's muhurta exactly.
Sri Lanka historically produces finest chrysoberyl cat's eye, but any certified natural sharp-band chrysoberyl may qualify per chart.
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