How Much Are Pearls Worth?

There is no price list for pearls. What a pearl is worth depends on what it is, how good it is, and how many like it are on the market. This page explains each of those, without quoting shop prices.

Natural or cultured#

The biggest difference is between natural pearls and cultured pearls. Natural pearls are rare: hundreds of oysters or mussels must be opened to find even one.¹ Cultured pearls make up the vast majority of pearl sales today.⁵

At the top of the market, natural pearls with a famous history can sell for millions. At Sotheby’s in Geneva in 2018, Marie Antoinette’s 18th-century natural pearl and diamond pendant sold for CHF 36,427,000, a record for a natural pearl, and the ten pieces from her collection together reached CHF 43.1 million against a pre-sale estimate of CHF 1.6 to 2.9 million.⁴

The type of pearl#

Among cultured pearls, the type sets much of the price. GIA calls freshwater cultured pearls the most affordable pearl type, and says Akoya cost more than freshwater pearls of similar size and quality, in part because they are rarer and cost more to culture.² Freshwater pearls are plentiful partly because each mussel produces dozens of pearls, while some other mollusks grow only one pearl per shell.⁶

GIA’s journal describes South Sea pearls as significantly more costly than Akoya.⁷ GIA puts their value down to their large size and thick nacre, which come from a long growth period, and to the limited conditions they need to grow.⁸ Tahitian pearls vary greatly in color, shape and size, and so have a wide price range; the most costly look black with high iridescence.⁷

Size and growing time are part of the story. The table gives both for each main type in the Learn About Pearls dataset.

No source in the dataset yet ranks South Sea and Tahitian pearls against each other on price, so the table records a relative price only where GIA gives one.

Quality within a type#

Within a type, seven factors set the value: size, shape, color, luster, surface quality, nacre quality and, for jewelry with two or more pearls, matching.³

• Size. When other factors are equal, larger pearls are rarer and more valuable than smaller pearls of the same type.³
• Shape. Round is the most difficult shape to culture, which makes round cultured pearls rarer than any other shape and, all else being equal, generally worth most, though well-formed pear, oval and baroque pearls are also prized.³
• Luster. Within a type, when other factors are equal, the higher the luster, the more valuable the pearl.³
• Surface. Numerous or severe blemishes can affect a pearl’s durability and severely depress its value.³
• Nacre. A bead visible under the nacre, or a dull, chalky look, means thin nacre, which affects both luster and durability.³
• Matching. An Akoya strand whose pearls are uniform in size, shape, nacre thickness, flaws, luster and color is highly valued.¹²

Color is different, because taste changes. GIA says supply and demand set the value of a given color at any time: if fine pearls in a favored color are scarce, their prices can rise to unusually high levels, and fashion and cultural traditions shape which colors people prefer.³ The pages on luster and pearl color go into detail.

Treatment and disclosure#

Treatment is part of value, so it must be disclosed. CIBJO’s standards require a treatment to be declared at the point of sale.¹⁸ US guidance treats it as deceptive to misrepresent how cultured pearls were produced, how long they stayed in the mollusk or how thick their nacre is.¹⁹

Some fine pearls need no treatment at all. CIBJO’s guide notes that fine-quality Australian South Sea cultured pearls need no treatment, while lower qualities are given maeshori treatments, and that fine-quality Tahitian cultured pearls need none either.¹² The page dyed and treated pearls explains the common treatments.

Supply and the market#

Volume and value don’t line up. From 2005 to 2014, China produced over 98% of the world’s cultured pearls by weight, almost all freshwater, but because freshwater pearls sell for much less, that output made up only about 5% of the world’s pearl value.¹ Japan, growing saltwater pearls, accounted for 51.6% of the world’s pearl output by value over the same years.¹

Supply moves prices too. Lower Japanese harvests since 2019, together with demand led by China, have pushed up the price per pearl, and Japan’s 2024 pearl harvest was worth 33.5 billion yen.¹¹

Finding out what your pearls are worth#

Start by finding out what they are. A GIA report states whether pearls are natural or cultured, the water they grew in, the mollusk when it can be determined and any detectable treatments, and it grades them on GIA’s seven value factors.² For pearls you already own, the page inherited and antique pearls explains what to check, and the pearl size guide explains how size is measured.