· Al₂O₃ · 9

Sapphire

Sapphire is corundum in every colour except red: blue from iron and titanium, plus pink, yellow, orange, green and colourless. It is the same mineral as ruby. Lab sapphire is grown in huge quantities, not only for jewellery but for watch crystals, phone camera covers and LED chips, which is why it is so cheap.

From the ground to your hand

The same stone at four moments. Tap a photo of a listing to see it on Amazon.

01 In the ground (step 1 of 4)

A natural blue sapphire crystal: the six-sided, barrel-shaped form corundum grows in.

Real specimen. Photo: Robert M. Lavinsky, CC BY-SA 3.0.
02 Out of the furnace (step 2 of 4)

A lab blue sapphire , 150 ct: one piece whole, one split open to show the blue inside.

Amazon listing photo. See it on Amazon
03 Cut (step 3 of 4)

A 28.96 ct royal blue lab sapphire, emerald cut, 20 x 15 mm.

Amazon listing photo. See it on Amazon
04 Set (step 4 of 4)

A created blue sapphire solitaire ring in sterling silver.

Amazon listing photo. See it on Amazon

Mineral: Corundum (aluminium oxide)
Blue from: Iron and titanium
Hardness: 9 on the Mohs scale
Grown in labs since: 1900s; industrially by the tonne
Famous sources: Sri Lanka, Madagascar, Kashmir

Sapphire is not always blue: a yellow sapphire crystal from Ratnapura, Sri Lanka. Photo: Robert M. Lavinsky, CC BY-SA 3.0.

A 35 kg lab sapphire crystal grown by the Kyropoulos method for industry. Slices become watch glasses and LED wafers. Photo: LaMèreVeille, CC BY-SA 4.0.

How a gemologist spots flame-fusion lab sapphire: curved growth lines under magnification, which mined stones never have. — How a gemologist spots flame-fusion lab sapphire: under magnification, which mined stones never have. Photo: LucasFassari, CC BY-SA 4.0.

Famous sapphire in museums

What the finest natural stones look like: real pieces in public collections. The whole gem museum.

The Star of India: About 563 carats, one of the largest star sapphires known, from Sri Lanka. — **The Star of India**About 563 carats, one of the largest star sapphires known, from Sri Lanka.American Museum of Natural History, New YorkStolen in a famous 1964 heist and recovered from a Miami bus-station locker.Photo: Vicpeters, CC BY 4.0.

**The Star of India**About 563 carats, one of the largest star sapphires known, from Sri Lanka.American Museum of Natural History, New YorkStolen in a famous 1964 heist and recovered from a Miami bus-station locker.Photo: Vicpeters, CC BY 4.0.

The Logan Sapphire: About 423 carats of blue sapphire from Sri Lanka, ringed with diamonds. — **The Logan Sapphire**About 423 carats of blue sapphire from Sri Lanka, ringed with diamonds.Smithsonian National Museum of Natural HistoryOne of the largest faceted blue sapphires on public display.Photo: Chip Clark (Smithsonian), Public domain.

**The Logan Sapphire**About 423 carats of blue sapphire from Sri Lanka, ringed with diamonds.Smithsonian National Museum of Natural HistoryOne of the largest faceted blue sapphires on public display.Photo: Chip Clark (Smithsonian), Public domain.

The Star of Asia: About 330 carats, a star sapphire from Myanmar with a crisp six-rayed star. — **The Star of Asia**About 330 carats, a star sapphire from Myanmar with a crisp six-rayed star.Smithsonian National Museum of Natural HistoryThe star is the same effect lab star sapphires copy, made here by natural silk.Photo: thisisbossi, CC BY-SA 2.0.

**The Star of Asia**About 330 carats, a star sapphire from Myanmar with a crisp six-rayed star.Smithsonian National Museum of Natural HistoryThe star is the same effect lab star sapphires copy, made here by natural silk.Photo: thisisbossi, CC BY-SA 2.0.

The Bismarck Sapphire Necklace: A blue sapphire of about 98.6 carats from Myanmar, set by Cartier with diamonds. — **The Bismarck Sapphire Necklace**A blue sapphire of about 98.6 carats from Myanmar, set by Cartier with diamonds.Smithsonian National Museum of Natural HistoryDonated by Countess Mona von Bismarck in 1967.Photo: Cliff, CC BY 2.0.

**The Bismarck Sapphire Necklace**A blue sapphire of about 98.6 carats from Myanmar, set by Cartier with diamonds.Smithsonian National Museum of Natural HistoryDonated by Countess Mona von Bismarck in 1967.Photo: Cliff, CC BY 2.0.

The Hall Sapphire Necklace: 36 Sri Lankan sapphires, about 195 carats in all, set with 435 diamonds by Harry Winston. — **The Hall Sapphire Necklace**36 Sri Lankan sapphires, about 195 carats in all, set with 435 diamonds by Harry Winston.Smithsonian National Museum of Natural HistoryEvery sapphire was matched for the same cornflower blue, which is far harder than finding one big stone.Photo: Chip Clark, Smithsonian Institution, Public domain.

**The Hall Sapphire Necklace**36 Sri Lankan sapphires, about 195 carats in all, set with 435 diamonds by Harry Winston.Smithsonian National Museum of Natural HistoryEvery sapphire was matched for the same cornflower blue, which is far harder than finding one big stone.Photo: Chip Clark, Smithsonian Institution, Public domain.

The Star of Bombay: About 182 carats, a violet-blue star sapphire from Sri Lanka. — **The Star of Bombay**About 182 carats, a violet-blue star sapphire from Sri Lanka.Smithsonian National Museum of Natural HistoryA gift from Douglas Fairbanks to the film star Mary Pickford, who left it to the Smithsonian.Photo: Smithsonian Institution, Public domain.

**The Star of Bombay**About 182 carats, a violet-blue star sapphire from Sri Lanka.Smithsonian National Museum of Natural HistoryA gift from Douglas Fairbanks to the film star Mary Pickford, who left it to the Smithsonian.Photo: Smithsonian Institution, Public domain.

The Imperial Crown of the Holy Roman Empire: An eight-sided gold crown set with sapphires, emeralds, amethysts and pearls, probably made in the late 10th century. — **The Imperial Crown of the Holy Roman Empire**An eight-sided gold crown set with sapphires, emeralds, amethysts and pearls, probably made in the late 10th century.Imperial Treasury (Kaiserliche Schatzkammer), Hofburg, ViennaGerman kings were crowned with it for centuries. The stones are cut as smooth domes, not facets: faceting came later.Photo: Bede735c, CC BY-SA 3.0.

The Crown of Princess Blanche: A gold crown set with sapphires, rubies, emeralds, diamonds and pearls, made around 1370 to 1380. — **The Crown of Princess Blanche**A gold crown set with sapphires, rubies, emeralds, diamonds and pearls, made around 1370 to 1380.Treasury of the Munich ResidenceIt is the oldest surviving crown from England. It left with Princess Blanche when she married into a German royal family in 1402.Photo: Allie Caulfield, CC BY 2.0.

**The Crown of Princess Blanche**A gold crown set with sapphires, rubies, emeralds, diamonds and pearls, made around 1370 to 1380.Treasury of the Munich ResidenceIt is the oldest surviving crown from England. It left with Princess Blanche when she married into a German royal family in 1402.Photo: Allie Caulfield, CC BY 2.0.

The Crown of Saint Wenceslas (replicas): The Bohemian royal crown, made in 1347 for Charles IV, gold set with sapphires, spinels, emeralds and pearls. — **The Crown of Saint Wenceslas (replicas)**The Bohemian royal crown, made in 1347 for Charles IV, gold set with sapphires, spinels, emeralds and pearls.Original: St. Vitus Cathedral, Prague (shown only on rare occasions). Replicas shown here.Its big red stones were long called rubies. Many are spinels, a different gem that was not told apart from ruby until modern times.Photo: Przemek Pietrak, CC BY-SA 3.0.

**The Crown of Saint Wenceslas (replicas)**The Bohemian royal crown, made in 1347 for Charles IV, gold set with sapphires, spinels, emeralds and pearls.Original: St. Vitus Cathedral, Prague (shown only on rare occasions). Replicas shown here.Its big red stones were long called rubies. Many are spinels, a different gem that was not told apart from ruby until modern times.Photo: Przemek Pietrak, CC BY-SA 3.0.

The votive crown of King Recceswinth: A gold crown set with sapphires and pearls, with hanging gold letters spelling the king’s name, Visigothic Spain, 7th century. — **The votive crown of King Recceswinth**A gold crown set with sapphires and pearls, with hanging gold letters spelling the king’s name, Visigothic Spain, 7th century.National Archaeological Museum, MadridIt was found with other crowns in 1858 near Toledo, in the Treasure of Guarrazar. Crowns like this were made to hang over an altar as a gift, not to wear.Photo: Ángel M. Felicísimo from Mérida, España, CC BY 2.0.

The Holy Crown of Hungary (a reconstruction): A gold crown with enamel pictures, set with garnets, sapphires and pearls, made in the 11th to 12th century. — **The Holy Crown of Hungary (a reconstruction)**A gold crown with enamel pictures, set with garnets, sapphires and pearls, made in the 11th to 12th century.Original: Hungarian Parliament Building, Budapest. This is a modern working reconstruction.It is the crown with the famous bent cross on top. Hungarian kings were crowned with it for centuries.Photo: Barabássy Miklós, CC BY-SA 4.0.

St Edward’s Crown: The crown used at the moment of coronation in Britain, made in 1661 of solid gold and set with sapphires, rubies, amethysts, garnets and other gems. — **St Edward’s Crown**The crown used at the moment of coronation in Britain, made in 1661 of solid gold and set with sapphires, rubies, amethysts, garnets and other gems.Jewel House, Tower of LondonIt replaced a medieval crown melted down after the English Civil War. It weighs over 2 kg and is worn only for a few minutes, at the crowning itself.Photo: Firebrace, Public domain.

The Pala d’Oro: The gold altarpiece of St Mark’s in Venice, set with Byzantine enamels and nearly 2,000 gems: emeralds, sapphires, garnets, amethysts, pearls and more. — **The Pala d’Oro**The gold altarpiece of St Mark’s in Venice, set with Byzantine enamels and nearly 2,000 gems: emeralds, sapphires, garnets, amethysts, pearls and more.Basilica di San Marco, VeniceMany of its enamels were made in Constantinople, and some were taken from the city when crusaders sacked it in 1204.Photo: Gérard, CC BY-SA 4.0.

The ring of Archbishop Albero of Trier: A gold bishop’s ring with a large rectangular blue stone, from Albero de Montreuil, Archbishop of Trier from 1131 to 1152. — **The ring of Archbishop Albero of Trier**A gold bishop’s ring with a large rectangular blue stone, from Albero de Montreuil, Archbishop of Trier from 1131 to 1152.Trier Cathedral Treasury, GermanyA bishop received his ring when he was consecrated, as a sign that he was married to his church. Many were buried with their owners and found again centuries later.Photo: Chris 73, CC BY-SA 3.0.

The Crown of Bavaria: The crown of the Kings of Bavaria, made in Paris in 1806 and 1807 by the jeweller Marie-Étienne Nitot with the goldsmiths Leblond and Biennais. — **The Crown of Bavaria**The crown of the Kings of Bavaria, made in Paris in 1806 and 1807 by the jeweller Marie-Étienne Nitot with the goldsmiths Leblond and Biennais.Treasury of the Residenz, MunichBavaria became a kingdom in 1806 with Napoleon’s backing, so the new king ordered his crown from Napoleon’s own jewellers.Photo: Jebulon, CC0.

A Cartier cigarette case in lapis and turquoise: A cigarette case of gold, lapis lazuli, turquoise, sapphires and diamonds made by Cartier in Paris in 1930. — **A Cartier cigarette case in lapis and turquoise**A cigarette case of gold, lapis lazuli, turquoise, sapphires and diamonds made by Cartier in Paris in 1930.Cartier Collection, GenevaArt Deco loved strong colour pairs, and lapis against turquoise is one of the boldest.Photo: Sailko, CC BY 3.0.

A Seljuk bracelet of garnets and sapphires: A gold bracelet set with garnets, sapphires and turquoises, made in Iran under the Seljuks in the 12th century (V&A M.32-1957). — **A Seljuk bracelet of garnets and sapphires**A gold bracelet set with garnets, sapphires and turquoises, made in Iran under the Seljuks in the 12th century (V&A M.32-1957).Victoria and Albert Museum, LondonMedieval Persian goldsmiths built bracelets from fine gold wire and granules, then studded them with stones.Photo: Vassil, CC0.

A centaur made from a baroque pearl: A pendant 8.9 cm high whose body is one irregular baroque pearl, finished in enamelled gold set with sapphires and rubies, with more pearls hanging below. — **A centaur made from a baroque pearl**A pendant 8.9 cm high whose body is one irregular baroque pearl, finished in enamelled gold set with sapphires and rubies, with more pearls hanging below.Metropolitan Museum of Art, New York (1982.60.381)Renaissance goldsmiths let the odd shape of a pearl suggest the creature, here the half-man, half-horse of Greek myth.Photo: Metropolitan Museum of Art, CC0.

Mined vs lab-grown sapphire

Mined and lab-grown sapphire are the same mineral; this is what differs
	Mined	Lab-grown
How it formed	Over millions of years, often washed into river gravels	In a flame, or as giant industrial crystals pulled from a melt
Inside	Silk, colour zoning, natural crystals	Usually clean; flame-fusion stones show curved growth lines
Treatment	Most is heated; some is beryllium-diffused	Normally none
Price	Hundreds to thousands of dollars a carat for fine blue	Cents to a few dollars a carat
Resale	Fine stones hold value	Very little

Treatments. Heating is standard for mined sapphire and is permanent. Beryllium diffusion, which drives colour into the stone at very high heat to make orange and "padparadscha" colours, must be disclosed and is worth far less. All gem treatments explained.

Where natural sapphire comes from

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 (5)

Sapphire: Ratnapura, Sri Lanka. The "city of gems": blue, pink, yellow and padparadscha sapphire from river gravels.
Sapphire: Ilakaka, Madagascar. A sapphire rush town founded in the late 1990s, now one of the world's biggest sources.
Sapphire: Kashmir (Padar), India. Velvety cornflower blue, mined mainly in the 1880s; the most valuable sapphire there is.
Sapphire: Yogo Gulch, Montana, United States. Small, naturally cornflower-blue stones that need no heating.
Sapphire: Anakie, Queensland, Australia. Dark blue and parti-coloured sapphire.

How it is cut

Lab 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.

What to buy

Checked in stock on October 10, 2026. Photos are the listings' own; prices are rounded.

Our first pick

Gryrigns 28.96 ct royal blue lab sapphire, emerald cut

about $75

A huge, clean blue stone for a few dollars a carat.

See it on Amazon

Also good

PEORA created blue sapphire solitaire ring, sterling silver

about $60

The blue counterpart of the ruby solitaire, 8 mm round.

See it on Amazon

Also good

Amazon Essentials lab-created blue sapphire studs, sterling silver

about $40

Simple round studs, an easy gift.

See it on Amazon

All 24 checked sapphire picks

See them all The full catalog 406 For women 7 For men 2 Loose stones 14 Beads 1

The sapphire shop: 194 more pieces we trust

Every piece names the real stone and comes from a seller with a record, checked in stock on October 11, 2026. Photos are the listings' own; prices are rounded.

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Loose stones19.5 ctGryrigns royal blue lab sapphire, oval, 20 x 15 mmThe same face as the emerald cut above, but an oval is shallower, so it weighs less and costs less.about $55on Amazon →

Loose stones21.29 ctGryrigns royal blue lab sapphire, emerald cut, 18 x 13 mmThe classic emerald-cut size for a statement ring or pendant: long step facets that show the inside like a window.about $60on Amazon →

Loose stones14.86 ctGryrigns royal blue lab sapphire, emerald cut, 16 x 12 mmA large ring or pendant stone.about $50on Amazon →

Loose stones11.5 ctGryrigns royal blue lab sapphire, oval, 16 x 12 mmA big oval at about three dollars a carat.about $35on Amazon →

Loose stones6.25 ctGryrigns royal blue lab sapphire, pear, 14 x 10 mmA teardrop for a pendant. Pears are cut to keep the most weight from a tapering piece of rough.about $25on Amazon →

Loose stones5.56 ctGryrigns cornflower blue lab sapphire, radiant cut, 11 x 9 mmThe lighter Kashmir-style blue in a bigger radiant: cropped corners with brilliant facets, so it sparkles more than an emerald cut.about $25on Amazon →

Loose stones4.09 ctGryrigns cornflower blue lab sapphire, radiant cut, 10 x 8 mmA lighter, softer blue than royal blue, the colour of the famous Kashmir stones.about $20on Amazon →

Loose stones4.5 ctGryrigns lab sapphire, round brilliant, 10 mmA round brilliant for a classic solitaire setting.about $25on Amazon →

Loose stones2.71 ctGryrigns royal blue lab sapphire, cushion, 8 x 8 mmA pillow-shaped square with soft corners, the cut of the Logan and many antique sapphires.about $20on Amazon →

Loose stones3.08 ctGryrigns royal blue lab sapphire, princess cut, 8 x 8 mmA sharp-cornered square brilliant. Set it with corner prongs, because points chip.about $20on Amazon →

Loose stones7 ctTXTIGER lab sapphire, oval, 14 x 10 mm, with AGL reportSeveral times the price of the Gryrigns ovals. You pay for a lab report and finer cutting, not a different mineral: both are corundum.about $195on Amazon →

Loose stonesTianzuan lab sapphire, antique cushion, 10 x 8 mm, with inclusionsCut the old-fashioned way and honest about inclusions, so it looks more like a mined stone than a flawless boule cut. Ships on lead time.about $35on Amazon →

See all 406 in the lab gem catalog

Your kit for sapphire

Five tools that let you check what you bought (a loupe, a UV torch, locking tweezers, a gem box and a pocket scale), plus a turntable that spins your stone under the light the way jewellers show one. The full collector's kit.

LookGemOro 10x triplet loupeunder $20

LookDARKBEAM filtered 365 nm UV flashlightabout $10

HandleHonoson locking tweezers, 3 packabout $10

StoreTeensery gem display boxes with clear lids, 10 packabout $9

ShowComXim motorized turntable, adjustable speed and directionabout $15

MeasureGemOro Platinum XP500 pocket scale, 0.01 gabout $40

In short

Sapphire grows over millions of years in the earth, or in hours to months in a lab. Both are real sapphire; the mined stone is rare and priced for rarity, the lab stone is priced for the cost of growing it. Buy lab to wear and enjoy, check the listing names the mineral, and test it when it arrives.

See our first pick: Gryrigns 28.96 ct royal blue lab sapphire, emerald cut

Frequently Asked Questions

Is lab sapphire real sapphire?

Yes. It is corundum, the same mineral as mined sapphire, and must be sold as lab-grown, created or synthetic.

Why is lab sapphire so cheap?

Corundum melts cleanly and grows fast, and industry grows it by the tonne for watch crystals, camera covers and LED wafers. Gem stones are a small by-product of a huge business.

What colours does sapphire come in?

Every colour except red, which is ruby. Blue is the classic; pink, yellow, orange, green, purple, colourless and the pink-orange padparadscha all exist, natural and lab-grown.

What should I check first in a lab sapphire?

Colour and cut before growth method. Does the blue go too dark indoors? Is there a see-through window in the middle from shallow cutting? Very cheap flame-fusion sapphire can also look unnaturally even. Lab sapphire shines when you need an exact colour, shape, size or matching pair.

Photo credits

sapphire-crystal-blue.webp: Robert M. Lavinsky, CC BY-SA 3.0, via Wikimedia Commons.
sapphire-crystal-yellow-ratnapura.webp: Robert M. Lavinsky, CC BY-SA 3.0, via Wikimedia Commons.
sapphire-boule-kyropoulos-35kg.webp: LaMèreVeille, CC BY-SA 4.0, via Wikimedia Commons.
synthetic-sapphire-curved-striae.webp: LucasFassari, CC BY-SA 4.0, via Wikimedia Commons.
Product photos: Amazon listings, via the Amazon Product Advertising (Creators) API.

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