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· Al₂O₃ · 9

Pink sapphire

Updated

Listen · the pink sapphire audiobook · 8 min

Between ruby and sapphire

0:00
8:01
10 chapters

Narrated by an AI voice (Kokoro, an open-source voice model) from a script we wrote from this page and its sources, fact-checked line by line.

3D render with corundum’s real optics (index 1.77)

Pink sapphire is pink corundum, the same mineral as ruby, coloured by a smaller amount of chromium. Where pink ends and ruby begins is a matter of judgement, and markets draw the line differently. It is hard enough for everyday rings, and lab-grown pink sapphire is the same mineral, grown in hours and sold for a small fraction of the price. The pinkish-orange variety is called padparadscha, from a Sinhala word for the lotus flower.

From the ground to your hand

From the rock to the finished piece. How lab gems are grown.

  1. 01 In the ground (step 1 of 3)

    A pink corundum crystal: the same mineral as ruby and blue sapphire, before cutting.

    A pink corundum crystal: the same mineral as ruby and blue sapphire, before cutting.

    Real specimen. Photo: Robert M. Lavinsky, CC BY-SA 3.0.

  2. 02 Cut (step 2 of 3)

    A faceted pink sapphire, 2.10 ct.

    A faceted pink sapphire, 2.10 ct.

    Real specimen. Photo: Wiener Edelstein Zentrum, CC BY-SA 3.0.

  3. 03 Set (step 3 of 3)

    A created pink sapphire solitaire ring in sterling silver.

    A created pink sapphire solitaire ring in sterling silver.

    Amazon listing photo. See it on Amazon

Mineral
Corundum (aluminium oxide)
Pink from
Chromium, less than in ruby
Hardness
9 on the Mohs scale
Grown in labs since
The early 1900s (flame fusion)
Famous sources
Madagascar, Sri Lanka, Myanmar
A pink sapphire set in a gold ring with a halo of diamonds.
A pink sapphire set in a gold ring with a halo of diamonds. Photo: Charlesjsharp (talk)Charles J Sharp, CC BY 2.5.

What is the difference between mined and lab-grown pink sapphire?

Mined and lab-grown pink sapphire are the same mineral; this is what differs
MinedLab-grown
How it formedOver millions of years in marble or metamorphic rockIn a flame or a , in hours to weeks
InsideSilk, crystals and colour zoningUsually clean; flame-grown stones show
TreatmentUsually heated; some orange-pink is beryllium-diffusedNormally none
PriceHundreds to thousands of dollars a carat for fine colourA few dollars a carat
ResaleFine stones hold valueVery little

All our picks are clearly sold as created or lab-grown pink sapphire. Be careful with very cheap "unheated natural" pink sapphire: big stones at a few dollars are lab-grown or glass, not mined.

Treatments. Most mined pink sapphire is heated, which is standard and permanent. Beryllium diffusion, which drives colour into the stone at very high heat, is used to make orange-pink and padparadscha colours and must be disclosed. Lab pink sapphire is usually untreated. All gem treatments explained.

Where pink sapphire is mined

Pins mark mining districts, not exact mines. Drag to move, pinch or scroll to zoom, tap a pin to read about it. Map data © OpenStreetMap contributors.

List of every place on the map (3)
  • Pink sapphire: Ilakaka, Madagascar. A huge sapphire rush since 1998; a major source of pink sapphire.
  • Pink sapphire: Ratnapura, Sri Lanka. Gem gravels yielding pink sapphire and the pinkish-orange padparadscha.
  • Pink sapphire: Mogok, Myanmar. Pink sapphire alongside Burmese ruby in the same marble.

How is pink sapphire cut?

Lab pink sapphire is mostly machine-cut in calibrated sizes, which is why a cut lab stone costs little more than its rough. Fine mined stones are often native-cut to keep weight, then recut by precision cutters. See cuts from easiest to hardest and whether cutting your own is cheaper than buying cut.

Which pink sapphire should you buy?

Listing photos; prices are rounded. How we choose.

Amazon prices as of . Prices and availability are accurate as of that date and time and are subject to change; the price shown on Amazon at the time of purchase applies.

Your kit for pink sapphire

Tools to check your stone →

In short

Pink sapphire is pink corundum, as hard as any sapphire and coloured by a little chromium. Mined stones are usually heated and cost far more; lab pink sapphire is the same mineral for a few dollars a carat. Ask whether a stone is mined or lab-grown and whether it is heated.

See our first pick: PEORA created pink sapphire solitaire ring, 2.75 ct, sterling silver

Frequently Asked Questions

What is the difference between pink sapphire and ruby?

Only how strong the red is. Both are corundum coloured by chromium; ruby has more of it and reads as red. Labs and markets draw the line between pink and red differently, so the same stone can be called either.

Is lab pink sapphire real sapphire?

It is the same mineral, corundum, with the same hardness and optical properties, and it must be sold as lab-grown, created or synthetic. It is not a fake, but it should cost far less than a mined stone.

What is a padparadscha sapphire?

A rare pinkish-orange sapphire, named from the Sinhala word for the lotus flower, classically from Sri Lanka. Many modern "padparadscha" colours are made by beryllium diffusion, which must be disclosed.

Sources

Photo credits

  • pink-corundum-crystal.webp: Robert M. Lavinsky, CC BY-SA 3.0, via Wikimedia Commons.
  • pink-sapphire-oval-faceted.webp: Wiener Edelstein Zentrum, CC BY-SA 3.0, via Wikimedia Commons.
  • pink-sapphire-ring.webp: Charlesjsharp (talk)Charles J Sharp, CC BY 2.5, via Wikimedia Commons.
  • Product photos: Amazon listings, via the Amazon Product Advertising (Creators) API.

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