Neelam: Natural Blue Sapphires
Blue sapphire, the Neelam of the Saturn tradition, in shades from cornflower to deep ink, each stone weighed in carats and ratti.
Stones
Neelam is blue corundum, the same mineral as ruby, coloured by traces of iron and titanium. It is one of the hardest natural gems you can wear, and that hardness is why a good sapphire still looks crisp after decades on a finger.
What to look at first
Colour matters more than anything else. A strong, even blue that stays lively under a tube light and in daylight is worth more than a larger stone that turns inky or greyish. Look for colour zoning, which shows as pale and dark stripes when you tilt the stone. Ask about treatment: most sapphires sold worldwide are heated to improve colour, which is a stable, accepted practice, while glass filling and surface diffusion are different matters and should be priced far lower. Each listing tells you what we know about the stone's treatment status.
- Cut: a well cut stone has no dull "window" in the centre.
- Size: in men's rings, 4 to 7 ratti is a common choice.
- Shape: ovals and cushions keep the most weight from the rough.
In Pakistan, Neelam is traditionally linked with Saturn, and many families advise wearing it on the middle finger in a silver or white gold ring. Some people follow the custom of a short trial wear before committing. We describe the tradition; we make no promise about what the stone will do for you.
With hardness 9, a sapphire is happy in an open prong setting for daily wear. It can still chip if struck hard against a wall or a car door, so a bezel suits a heavy hand. Clean it with warm soapy water and a soft brush.