Pukhraj vs. yellow topaz

How to tell them apart, why topaz is an accepted substitute, and when it isn’t.

Yellow sapphire (pukhraj) is Jupiter's stone, worn for wisdom, prosperity and a blessed marriage. It is also one of the most often substituted stones, because fine pukhraj is expensive.

Two different minerals

Yellow sapphire is corundum, hardness 9, the same mineral as ruby and blue sapphire. - Yellow topaz (sunela) is a different mineral, hardness 8, lighter for its size and usually less saturated in colour.

They can look alike in a ring. A lab tells them apart instantly from refractive index and specific gravity, which is why the report matters more than the seller's description.

When topaz is a fair substitute

Many jyotishis accept yellow topaz or citrine as an uparatna (substitute) for Jupiter when budget rules out a clean pukhraj. A substitute is generally prescribed heavier than the primary stone and is expected to act more gently.

When it isn't

When the astrologer specifically prescribed pukhraj for a strong remedy, for example during a Jupiter mahadasha. - When a stone is sold as "pukhraj" but the report says topaz or citrine. That is mislabelling, not substitution.

Buying tips

Look for a clear, even yellow without brown tones, a report that names the mineral and any treatment, and a weight of at least 3 carats for pukhraj. It is traditionally set in gold and worn on the index finger on a Thursday morning.