Sapphire Guide: Neelam (Blue) & Pukhraj (Yellow) — Origin & Authenticity

Sapphire and ruby are the same mineral — corundum — so everything that makes corundum durable and desirable applies to both. Blue Sapphire (Neelam) and Yellow Sapphire (Pukhraj) are simply corundum colored by different trace elements: iron and titanium for blue, iron alone for the yellow-to-golden range.

Blue Sapphire (Neelam)

Neelam's blue ranges from a pale cornflower to a deep, almost inky navy, with color intensity being one of the biggest factors in how a stone is valued. Natural neelam typically shows fine, needle-like inclusions called silk under magnification — their presence is actually a reasonable authenticity signal, since flawless "sapphire" at a low price is more often glass or synthetic corundum.

Yellow Sapphire (Pukhraj)

Pukhraj's warm golden-yellow comes from the same corundum family, and is judged on similar criteria: color saturation, clarity, and cut. It's worth knowing that citrine (a much less expensive quartz variety) is sometimes sold under vague "yellow stone" labeling to buyers looking for pukhraj specifically — always confirm you're being sold corundum, not quartz.

What to check before buying either

• Ask what species the stone actually is. "Sapphire" should mean corundum — if a seller can't confirm that plainly, be cautious.
• Check for natural inclusions under light. Fine, thread-like silk or minor internal features are normal in genuine material.
• Understand heat treatment is standard. The large majority of sapphire on the market — blue and yellow alike — is heat-treated to improve color and clarity, a long-accepted practice. What matters is honest disclosure.

Durability and care

At 9 on the Mohs scale, sapphire is nearly as hard as ruby and excellent for daily wear. Clean with mild soap and a soft cloth; it tolerates normal handling well.

See our current Blue Sapphire and Yellow Sapphire pieces in women's rings or the full shop.