Ceylon sapphire is a trade term for Sri Lankan corundum, not a single colour. Royal blue describes deep saturated blue with life in the crown. Cornflower is the lively medium blue many buyers picture as classic sapphire. Pastel pinks, lilacs, and yellows appear commonly in the same gravels as blue.
Padparadscha is the pink-orange salmon category judged face-up, especially associated with Sri Lankan crystal though other origins produce similar hues. Star sapphires and colour-change material appear less often but anchor niche collector interest.
Colour zoning is normal in Ceylon rough. Cutters orient tables to maximize face-up hue. A stone that looks muted in one direction can bloom when rotated ten degrees. That is why video matters more than a single static photograph.
Kashmir is essentially a one-colour trophy origin. Ceylon is a palette. Jewellers building suites for clients, matching pinks to blues, or sourcing padparadscha pairs gravitate to Sri Lanka because the country produces the spread, not only the headline blue.