What Are the Rarest Gemstones in the World?

The rarest gemstones in the world are not characterised by the high or premium price range per carat but are defined by extreme geological scarcity with some ultra rare gemstones existing in extremely fewer quantities that is fewer than 30 gem quality specimens known. 

Leading the list of rarest gemstones in the world are Painite( Myanmar, less than a couple of crystals known for decades and still limited gem quality material), Musgravite (less than a handful of faceted stones), Red Beryl (gem quality exclusively sourced from Utah, USA), and Grandidierite (Transparent material sourced from Madagascar).

While traditional gemstones like diamonds and sapphires are mined continuously these ultra rare gemstones are formed under hyper specific tectonic conditions that happens once or twice in the history of the earth and reflects what is called the true rarity. The genuine and top specimens of these gemstones fetch benchmark market prices ranging from $10,000 to over $60,000 per carat far rarer than diamond in faceted form.

This guide is for jewelry makers, gemstone enthusiasts and B2B buyers who are looking for exceptional pieces or the rarest of rare gemstones. This guide explores the top 10 ultra rare gemstones, where they are found and what makes them so valuable. 

The 10 Rarest Gemstones in the World: 

1. Painite:

Discovered by British gemologist Arthur C.D. Pain in 1950 in Myanmar’s Mogok region Painite is known to be the world's rarest gemstone. A borate mineral once known from only a few crystals for decades, Painite has earned recognition from Guinness world record to be the rarest gemstone on the earth. 

For decades, Painite is known to exist for less than 25 known faceted specimens worldwide but with the discovery of a new deposit in 2002 the total was increased to hundreds to a low thousand of mostly non gem crystals however high quality faceted stones remains exceptionally scarce.

Per Carat Price Range: $50,000 – $60,000 / Carat

Composition: Borate Mineral

Primary Origin: Mogok, Myanmar

2. Musgravite: 

Primarily identified in Australia Musgrave range in 1967, Musgravite belongs to the taaffeite mineral family. With chemical composition of magnesium, beryllium, and aluminum, Musgravite is ultra rare and clean cut stones of notable sizes are almost nonexistent. 

Since few discoveries of mines in Madagascar, Greenland, Antarctica, and Sri Lanka the quantity still remains limited making Musgravite extremely rare. Musgravite is not only extremely rare but is highly durable and displays attractive colours that adds in Musgravite being the most rare gemstones available.

Per Carat Price Range: $35,000 – $40,000 / Carat

Composition: Beryllium Oxide

Primary Origin: Musgrave Ranges, Australia

3. Jadeite (Imperial Jade):

While nephrite jade is common and widely available imperial Jade or Jadeite represents the finest quality of jade which stands apart for both rarity and cultural demand. 

Sourced exclusively from upper Myanmar region, imperial jade is highly translucent green coloured emerald and is known to be the most valuable natural substances on the earth. While only a tiny fraction of jadeite reaches to become auction quality imperial jadeite and it exceeds the price of about $3 million per carat making it one of the most valuable gemstones ever sold.

Per Carat Price Range: $20,000 – $3,000,000+ / Carat

Composition: Pyroxene Mineral

Primary Origin: Kachin State, Myanmar

Browse our Gemstones for Sale or explore our Jadeite Collection to discover certified jade varieties.

4. Red Beryl (Bixbite):

Red Beryl’s are also known as Bixbite or Red Emeralds and are estimated to be 150000 times rarer than commercial diamonds.  Red Beryl gem quality material are found exclusively in the topaz-bearing rhyolites of Utah's Wah Wah Mountains. 

Red Beryl is a manganese-colored beryl with all recovered crystals under 1 carat and any clean pieces above that size are museum rarities. Roughly 1 red beryl crystal is earthed for every 150,000 diamonds extracted; a 2-carat red beryl is considered as rare as a 40-carat diamond.

Per Carat Price Range: $10,000 – $15,000 / Carat

Composition: Beryllium Aluminum Silicate

Primary Origin: Wah Wah Mountains, Utah, USA

5. Grandidierite: 

Named after the french explorer who discovered Grandidierite in 1902 Mr. Alfred Grandidier in Madagascar, this blue-green borosilicate is admired for its striking blue-green colour.

Transparent facetable grandidierite material is extremely rare with an estimate cited at 1 in thousands of pieces and with most material being opaque or heavily included.

Per Carat Price Range: $20,000 – $30,000 / Carat

Composition: Magnesium Aluminum Borosilicate

Primary Origin: Southern Madagascar.

6. Alexandrite:

Alexandrite is a colour changing chrysoberyl with its remarkable ability to be emerald by day, ruby by night. Alexandrite appears to be green in daylight and red or purplish under incandescent light. 

Discovered in Russia's Ural Mountains in the 1830s, the Russian deposits now stand completely exhausted; it is now being mined from recently found deposits in Brazil, Sri Lanka, and East Africa which fetch record prices per carat in current markets. 

Per Carat Price Range: $12,000 – $70,000 / Carat

Composition: Chrysoberyl

Primary Origin: Ural Mountains (Russia), Brazil, Sri Lanka

7. Taaffeite:

The rarity of Taaffeite can be driven from the fact that it was initially identified from a cut and polished stone rather than raw mineral rough.

Taaffeite is a rare beryllium-magnesium oxide accidentally identified in parcels of spinel in Dublin in 1945 by Bohemian gemologist Richard Taaffe. 

With over a million times rarer than diamonds, Taaffeite deposits are discovered in Sri Lanka and Tanzania however the gem quality material continues to remain ultra rare due to scarcity.

Per Carat Price Range: $2,500 – $35,000 / Carat

Composition: Beryllium Magnesium Aluminum Oxide

Primary Origin: Sri Lanka, Tanzania

8. Benitoite: 

The official state gemstone of California, Benitoite finds its origin in San Benito county, California in the United states. With a higher dispersion rate than diamonds, Benitoite is known for its vivid and intense sapphire blue colour. 

Most benitoite stones extracted are smaller (less than 1 ct) pieces over 2 carats are museum grade as commercial production at San Benito mine has completely ceased making existing inventory firmly in private collections.

Per Carat Price Range: $3,000 – $8,000 / Carat

Composition: Barium Titanium Silicate

Primary Origin: San Benito County, California, USA

9. Poudretteite:

First described in tiny crystals at the Poudrette Quarry in Quebec, Canada during the 1960’s Poudretteite was recognized as a gem quality faceted size until a pink to colorless cyclosilicate was later found in Mogok, Myanmar, in 2000. 

Poudretteite is prized for its pink to violet hues and remains one of the world's most esoteric collector gems.

Per Carat Price Range: $3,000 – $10,000 / Carat

Composition: Osumilite Group Mineral

Primary Origin: Mont Saint-Hilaire (Canada), Mogok (Myanmar)

10. Serendibite:

Serendibite draws its name from the old arabic name for Sri Lanka (Serendib) and is an extremely complex borosilicate finding its origin in Sri Lanka and Myanmar. 

Serendibite’s are transparent blue-green or black material which are known to be extremely rare for faceting with most recorded pieces measuring under half a carat.

Per Carat Price Range: $12,000 – $18,000 / Carat

Composition: Complex Borosilicate

Primary Origin: Sri Lanka, Myanmar

For collectors seeking verified material, browse current gemstones for sale or the rare stone inventory.

Learn More : The Rarest and Most Expensive Opals in the World

FAQ: Rarest Gemstones

Which is rarer, Painite or Musgravite?

While Painite was long considered the absolute rarest mineral, the 2002 discovery of new Painite deposits in Myanmar increased its total mineral volume. However, tested, clean gem-quality faceted Musgravite specimens remain fewer in total count (fewer than 10 documented clean stones worldwide), making faceted Musgravite technically rarer on the secondary gemological market.

What is the most expensive gemstone in the world?

By price-per-carat, top-grade Imperial Jadeite and fine Pink/Red Diamonds hold record prices, often exceeding $2 million to $4 million per carat at major auction houses like Sotheby's and Christie's.

Are lab-created versions of rare gems available?

Synthetic versions of Alexandrite and Beryl are commonly produced using hydrothermal or flux-growth methods. However, ultrarare species such as Painite, Musgravite, and Taaffeite have no commercial synthetic equivalent due to complex crystallization chemistry and lack of industrial demand.

Where can I buy certified rare gemstones?

Authentic rare minerals should only be purchased from established dealers offering independent lab certifications (such as GIA, SSEF, or Gübelin). You can browse certified specimens via our Gemstones for sale portal or explore museum-grade pieces in our dedicated Rare stone inventory.