--- title: "South Sea vs Tahitian Pearls: What's the Difference?" description: "South Sea and Tahitian cultured pearls side by side: their oysters and origins, colors, sizes, nacre and growing times, and how labs tell them apart." canonical_url: "https://learnaboutpearls.com/compare/south-sea-vs-tahitian-pearls/" last_updated: "2026-11-04" last_reviewed: "2026-10-26" reviewed_by: "Simon" publisher: "Unique Pearl" publisher_disclosure: "Learn About Pearls is published by Unique Pearl, a pearl jeweler." --- # South Sea vs Tahitian Pearls: What's the Difference? **Short answer:** South Sea pearls grow in Pinctada maxima, the largest pearl oyster, mainly in Australia, Indonesia, the Philippines and Myanmar, and are white, silver, cream or golden. Tahitian pearls grow in the black-lipped oyster of French Polynesia and are naturally gray, black or brown, with blue, green, purple or pink overtones. Both are bead-cultured saltwater pearls, but South Sea pearls are usually larger, with thicker nacre. **Key facts:** - South Sea cultured pearls are typically 9 to 16 mm, and Tahitian cultured pearls typically 8 to 14 mm. [1, 2] - South Sea nacre is typically 1.5 to 3.0 mm thick, the thickest of any bead-cultured pearl. [3, 4] - Tahitian cultured pearls are harvested after about 18 to 24 months, while Pinctada maxima generally needs at least two years. [4, 5] - CIBJO estimates Tahitian production at about 8 million pearls a year, against about 800,000 from Australia, 1 million from the Philippines and 3 million from Indonesia, Myanmar and Vietnam. [1] - Australia's South Sea pearls come mostly from wild oysters, while Tahitian pearls come from oysters grown from spat caught in French Polynesia's lagoons. [1] - A reflectance feature at 700 nm is a key identifying sign of pearls from the black-lipped oyster. [6] [South Sea cultured pearls](https://learnaboutpearls.com/glossary/#south-sea-cultured-pearl) and [Tahitian cultured pearls](https://learnaboutpearls.com/glossary/#tahitian-cultured-pearl) are both large saltwater [cultured pearls](https://learnaboutpearls.com/glossary/#cultured-pearl) grown around a bead, but in different oysters and with very different colors. The table compares them using the Learn About Pearls dataset. | Feature | South Sea cultured pearl | Tahitian cultured pearl | | ---------------------- | ------------------------------------------------------------------------------------------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | | Mollusk | _Pinctada maxima_ (silver-lipped pearl oyster and gold-lipped pearl oyster) [4, 7] | _Pinctada margaritifera cumingii_ (black-lipped pearl oyster) [7, 8, 9] | | Water | saltwater [2, 9] | saltwater [2, 9] | | Main producing regions | Australia, Indonesia, the Philippines and Myanmar [4, 7, 9, 10] | French Polynesia [7, 9, 10] | | Typical size | 9–16 mm [1, 2, 10] | 8–14 mm [1, 2, 5, 10] | | Shapes | round, oval, button, drop, circled and baroque [1, 2] | round, oval, button, drop, circled and baroque [1, 2] | | Natural colors | white, silver, cream, champagne and golden [1, 9, 11, 12, 13] | gray, greenish gray, black and brown [1, 2, 9] | | Growing time | 1–3 years (two to three years in Australia and the Philippines) [1, 4] | 18–24 months [1, 5] | | Nacre | Bead-cultured, with the thickest nacre of the bead-cultured types, typically 1.5–3.0 mm. [3, 4] | Bead-cultured, with the bead placed in the gonad. French Polynesia used to require at least 0.8 mm of nacre; since its 2017 pearl law, a nacre check is voluntary. [7, 8, 14] | | Relative price | Not recorded | Not recorded | ## The key differences between South Sea and Tahitian pearls South Sea and Tahitian cultured pearls differ most in their oyster, their color and their size. - **Oyster.** South Sea pearls grow in _[Pinctada maxima](https://learnaboutpearls.com/glossary/#pinctada-maxima)_, the largest of the [pearl oysters](https://learnaboutpearls.com/glossary/#pearl-oyster). [7] Tahitian pearls grow in the black-lipped _[Pinctada margaritifera](https://learnaboutpearls.com/glossary/#pinctada-margaritifera)_, the second largest. [15] - **Where.** South Sea pearls are cultured mainly in Australia, Indonesia, the Philippines and Myanmar. [7] Only pearls grown in French Polynesia can be called Tahitian. [7] - **Color.** South Sea pearls are white, silver, cream, champagne and golden [1]. Tahitian pearls are gray, greenish gray, black and brown [9], with blue, green, purple or pink [overtones](https://learnaboutpearls.com/glossary/#overtone). [9] - **Size.** South Sea pearls are typically 9–16 mm [1], and Tahitian pearls 8–14 mm [2]. - **Nacre.** South Sea pearls have the thickest [nacre](https://learnaboutpearls.com/glossary/#nacre) of any [bead-cultured pearl](https://learnaboutpearls.com/glossary/#beaded-cultured-pearl). [4] - **Growing time.** Tahitian pearls are harvested after about 18 to 24 months, [5] while _P. maxima_ generally needs at least two years. [4] ## Where the oysters come from The oysters reach the farms in different ways. In Australia most South Sea pearls come from wild oysters caught by divers, about 70% of production, while the Philippines, Indonesia, Myanmar and Vietnam rear their oysters in hatcheries. [1] Western Australia has the only significant wild-stock pearl oyster fishery in the world. [16] Tahitian oysters are grown from [spat](https://learnaboutpearls.com/glossary/#spat), young oysters caught on collectors in French Polynesia’s lagoons. [1] ## What the names mean CIBJO defines both names by the oyster: a South Sea cultured pearl comes from _P. maxima_, and a Tahitian cultured pearl from the black-lipped oyster grown in French Polynesia. [7] US guidance defines a South Sea pearl by place instead, as one from a saltwater [mollusk](https://learnaboutpearls.com/glossary/#mollusk) of the Pacific Ocean South Sea Islands, Australia or Southeast Asia. [17] In the trade, Tahitian pearls are also marketed as “black” South Sea pearls. [18] ## How to tell South Sea and Tahitian pearls apart Their colors usually differ, but labs can go further. Pearls from the black-lipped oyster show a reflectance feature at 700 nm that is a key identifying sign. [6] For golden South Sea pearls, labs check whether the color is natural or produced by heat or dye. [12, 13] Under French Polynesian law, a Tahitian cultured pearl must be naturally colored and untreated. [8] ## Choosing between South Sea and Tahitian pearls Choose South Sea cultured pearls if you want large white, silver or golden pearls with thick nacre. [9] Choose Tahitian cultured pearls if you want naturally dark pearls, from gray and black to brown, with colorful overtones. [9] In both cases, ask whether the color is natural: golden color can be produced by heat or dye, and some dark pearls are bleached or otherwise treated. [13, 19] ## Questions people ask ### Are Tahitian pearls a type of South Sea pearl? It depends on the definition. CIBJO defines South Sea cultured pearls by their oyster, Pinctada maxima, and Tahitian cultured pearls as pearls from the black-lipped oyster grown in French Polynesia. US guidance defines a South Sea pearl by region, as one from the Pacific Ocean South Sea Islands, Australia or Southeast Asia. In the trade, Tahitian pearls are sometimes marketed as "black" South Sea pearls. [7, 17, 18] ### Which are bigger, South Sea or Tahitian pearls? South Sea pearls, usually. They are typically 9 to 16 mm, against 8 to 14 mm for Tahitian pearls, and both occasionally exceed 20 mm. [1, 2] ### Which have thicker nacre? South Sea pearls. GIA says Pinctada maxima pearls have the thickest nacre of all bead-cultured pearls, typically 1.5 to 3.0 mm. [3, 4] ### Can South Sea pearls be black? Pinctada maxima's natural colors run from white to gold, with pink, blue and green overtones. Pearls sold as black South Sea pearls usually come from the black-lipped oyster, the mollusk of Tahitian pearls. [1, 18] ## References 1. CIBJO Pearl Commission (2025). CIBJO Guides Describing and Classifying Natural and Cultured Pearls, the Producing Molluscs & Responsible Pearling. [Source](https://cibjo.org/wp-content/uploads/2025/12/Final-Guide-October-2025-v2-COMPRESSED.pdf) · [Archived copy](https://web.archive.org/web/20260212155210/https://cibjo.org/wp-content/uploads/2025/12/Final-Guide-October-2025-v2-COMPRESSED.pdf) 2. Gemological Institute of America (GIA), FAQ. What are the main types of cultured pearls and what are their distinctive characteristics?. [Source](https://www.gia.edu/FAQ/gia-faq-about-gemstones-cultured-pearl-types-characteristics) · [Archived copy](https://web.archive.org/web/20260510233833/https://www.gia.edu/FAQ/gia-faq-about-gemstones-cultured-pearl-types-characteristics) 3. Nanthaporn Nilpetploy, Kwanreun Lawanwong, Promlikit Kessrapong, Areeya Manustrong and Nicholas Sturman (2021). A study on improving the surface appearance of low-quality Pinctada maxima bead cultured pearls. [Source](https://www.gia.edu/dam/jcr:466bc3fd-eb08-4a26-b59e-aa80ad710bb9/study-improving-surface-appearance-low-quality-Pinctada-maxima-bead-cultured-pearls.pdf) · [Archived copy](https://web.archive.org/web/20261025235956/https://www.gia.edu/dam/jcr:466bc3fd-eb08-4a26-b59e-aa80ad710bb9/study-improving-surface-appearance-low-quality-Pinctada-maxima-bead-cultured-pearls.pdf) 4. Artitaya Homkrajae, Nanthaporn Nilpetploy, Areeya Manustrong, Nicholas Sturman, Kwanreun Lawanwong and Promlikit Kessrapong (2021). Internal Structures of Known Pinctada maxima Pearls: Cultured Pearls from Operated Marine Mollusks. [Source](https://www.gia.edu/gems-gemology/fall-2021-internal-structures-pinctada-maxima-pearls) · DOI [10.5741/GEMS.57.3.186](https://doi.org/10.5741/GEMS.57.3.186) · [Archived copy](https://web.archive.org/web/20260420034834/https://www.gia.edu/gems-gemology/fall-2021-internal-structures-pinctada-maxima-pearls) 5. Oïhana Latchere and others (2018). Influence of water temperature and food on the last stages of cultured pearl mineralization from the black-lip pearl oyster Pinctada margaritifera. [Source](https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0193863) · DOI [10.1371/journal.pone.0193863](https://doi.org/10.1371/journal.pone.0193863) · [Archived copy](https://web.archive.org/web/20260905233729/https://journals.plos.org/plosone/article?id=10.1371%2Fjournal.pone.0193863) 6. Artitaya Homkrajae (2016). Spectral Characteristics of Pinctada mazatlanica and Pinctada margaritifera Pearl Oyster Species. [Source](https://www.gia.edu/gems-gemology/summer-2016-gemnews-spectral-characteristics-pinctada-mazatlanica-margaritifera-pearl-oyster-species) · [Archived copy](https://web.archive.org/web/20260317034153/https://www.gia.edu/gems-gemology/summer-2016-gemnews-spectral-characteristics-pinctada-mazatlanica-margaritifera-pearl-oyster-species) 7. CIBJO, The World Jewellery Confederation, Pearl Commission (2026). The CIBJO Pearl Book (Pearl Blue Book) 2026. [Source](https://cibjo.org/wp-content/uploads/2026/10/Pearl-Blue-Book-2026-.pdf) · [Archived copy](https://web.archive.org/web/20261025235254/https://cibjo.org/wp-content/uploads/2026/10/Pearl-Blue-Book-2026-.pdf) 8. Assemblée de la Polynésie française (Journal officiel de la Polynésie française) (2017). Loi du pays n° 2017-16 du 18 juillet 2017 réglementant les activités professionnelles liées à la production et la commercialisation des produits perliers et nacriers en Polynésie française. [Source](https://www.ressources-marines.gov.pf/wp-content/uploads/sites/24/2017/10/Loi-du-Pays-n%C2%B0-2017-16-du-18_07_2017-Activit%C3%A9s-professionnelles-perli.pdf) · [Archived copy](https://web.archive.org/web/20261026000126/https://www.ressources-marines.gov.pf/wp-content/uploads/sites/24/2017/10/Loi-du-Pays-n%C2%B0-2017-16-du-18_07_2017-Activit%C3%A9s-professionnelles-perli.pdf) 9. Gemological Institute of America (GIA), Gem Encyclopedia. Pearl Description. [Source](https://www.gia.edu/pearl-description) · [Archived copy](https://web.archive.org/web/20261017085317/https://www.gia.edu/pearl-description) 10. Fisheries Agency of Japan (水産庁) (2026). 真珠養殖をめぐる情勢について (On the situation of pearl culture). [Source](https://www.jfa.maff.go.jp/j/saibai/attach/pdf/shinju-60.pdf) · [Archived copy](https://web.archive.org/web/20261026000052/https://www.jfa.maff.go.jp/j/saibai/attach/pdf/shinju-60.pdf) 11. Smithsonian National Museum of Natural History. South Sea Pearl Ring (NMNH G10639). [Source](https://naturalhistory.si.edu/explore/collections/geogallery/10002784) · [Archived copy](https://web.archive.org/web/20250925205851/https://naturalhistory.si.edu/explore/collections/geogallery/10002784) 12. Shane Elen (2001). Spectral Reflectance and Fluorescence Characteristics of Natural-Color and Heat-Treated "Golden" South Sea Cultured Pearls. [Source](https://www.gia.edu/gems-gemology/summer-2001-heat-treated-golden-south-sea-cultured-pearls-elen) · DOI [10.5741/GEMS.37.2.114](https://doi.org/10.5741/GEMS.37.2.114) · [Archived copy](https://web.archive.org/web/20260308065638/https://www.gia.edu/gems-gemology/summer-2001-heat-treated-golden-south-sea-cultured-pearls-elen) 13. Chunhui Zhou, Artitaya Homkrajae, Joyce Wing Yan Ho, Akira Hyatt and Nicholas Sturman (2012). Update on the Identification of Dye Treatment in Yellow or "Golden" Cultured Pearls. [Source](https://www.gia.edu/gems-gemology/winter-2012-cultured-pearls-zhou) · DOI [10.5741/GEMS.48.4.284](https://doi.org/10.5741/GEMS.48.4.284) · [Archived copy](https://web.archive.org/web/20260309094817/https://www.gia.edu/gems-gemology/winter-2012-cultured-pearls-zhou) 14. Chambre territoriale des comptes de la Polynésie française (2021). Rapport d'observations définitives : Politique publique en matière des ressources marines (perliculture), exercices 2015 et suivants. [Source](https://www.ccomptes.fr/sites/default/files/2023-10/PFR2021016.pdf) · [Archived copy](https://web.archive.org/web/20261026000246/https://www.ccomptes.fr/sites/default/files/2023-10/PFR2021016.pdf) 15. Changbo Zhu, Paul C. Southgate and Ting Li (2019). Production of Pearls. [Source](https://link.springer.com/chapter/10.1007/978-3-319-96776-9_5) · DOI [10.1007/978-3-319-96776-9_5](https://doi.org/10.1007/978-3-319-96776-9_5) · [Archived copy](https://web.archive.org/web/20240129152149/https://link.springer.com/chapter/10.1007/978-3-319-96776-9_5) 16. Department of Primary Industries and Regional Development, Government of Western Australia. Pearl oyster fishery in Western Australia. [Source](https://www.dpird.wa.gov.au/environment-and-sustainability/sustainable-fisheries/pearl-oyster-fishery-in-western-australia/) · [Archived copy](https://web.archive.org/web/20260419144450/https://www.dpird.wa.gov.au/environment-and-sustainability/sustainable-fisheries/pearl-oyster-fishery-in-western-australia/) 17. U.S. Federal Trade Commission (Electronic Code of Federal Regulations). 16 CFR Part 23, Guides for the Jewelry, Precious Metals, and Pewter Industries. [Source](https://www.ecfr.gov/current/title-16/chapter-I/subchapter-B/part-23) · [Archived copy](https://web.archive.org/web/20260907072405/https://www.ecfr.gov/current/title-16/chapter-I/subchapter-B/part-23) 18. Stefanos Karampelas, Emmanuel Fritsch, Jean-Pierre Gauthier and Thomas Hainschwang (2011). UV-Vis-NIR Reflectance Spectroscopy of Natural-Color Saltwater Cultured Pearls from Pinctada margaritifera. [Source](https://www.gia.edu/doc/UV-VIS-NIR-Reflectance-Spectroscopy-of-Natural-Color-Saltwater-Cultured-Pearls-from-Pinctada-Margaritifera.pdf) · DOI [10.5741/GEMS.47.1.31](https://doi.org/10.5741/GEMS.47.1.31) · [Archived copy](https://web.archive.org/web/20260315140441/https://www.gia.edu/doc/UV-VIS-NIR-Reflectance-Spectroscopy-of-Natural-Color-Saltwater-Cultured-Pearls-from-Pinctada-Margaritifera.pdf) 19. Wuyi Wang, Kenneth Scarratt, Akira Hyatt, Andy Hsi-Tien Shen and Matthew Hall (2006). Identification of "Chocolate Pearls" Treated by Ballerina Pearl Co.. [Source](https://www.gia.edu/gems-gemology/winter-2006-identification-chocolate-pearls-ballerina-co-wang) · DOI [10.5741/GEMS.42.4.222](https://doi.org/10.5741/GEMS.42.4.222) · [Archived copy](https://web.archive.org/web/20260411054259/https://www.gia.edu/gems-gemology/winter-2006-identification-chocolate-pearls-ballerina-co-wang) **Written by:** Learn About Pearls editors **Fact-checked:** Learn About Pearls editors, October 26, 2026 **Reviewed by:** Simon, October 26, 2026 **First published:** November 4, 2026 **Publisher:** [Unique Pearl](https://learnaboutpearls.com/about/), a pearl jeweler **Revision history** 1. November 4, 2026: First published. First published **How to cite this page** **APA:** Learn About Pearls editors. (2026). _South Sea vs Tahitian Pearls: What's the Difference?_ Learn About Pearls. https://learnaboutpearls.com/compare/south-sea-vs-tahitian-pearls/ **MLA:** “South Sea vs Tahitian Pearls: What's the Difference?” _Learn About Pearls_, Unique Pearl, November 4, 2026, learnaboutpearls.com/compare/south-sea-vs-tahitian-pearls/. **Chicago:** Learn About Pearls editors. “South Sea vs Tahitian Pearls: What's the Difference?” Learn About Pearls. Unique Pearl. Last modified November 4, 2026. https://learnaboutpearls.com/compare/south-sea-vs-tahitian-pearls/. **BibTeX:** `@misc{lap-compare-south-sea-vs-tahitian-pearls, title = {South Sea vs Tahitian Pearls: What's the Difference?}, author = {{Learn About Pearls editors}}, year = {2026}, howpublished = {\url{https://learnaboutpearls.com/compare/south-sea-vs-tahitian-pearls/}}, note = {Learn About Pearls, published by Unique Pearl}}` Quoting with attribution and a link is welcome. See [how to cite and reuse](https://learnaboutpearls.com/cite/). **Suggest a correction** ## Related pages - [South Sea pearls](https://learnaboutpearls.com/types/south-sea-pearls/): The largest cultured pearls, white to golden, from the Pinctada maxima oyster. - [Tahitian pearls](https://learnaboutpearls.com/types/tahitian-pearls/): Dark, naturally colored cultured pearls from the black-lipped oyster of French Polynesia. - [Akoya vs South Sea](https://learnaboutpearls.com/compare/akoya-vs-south-sea-pearls/): How the small, classic Akoya pearl differs from the large South Sea pearl.