--- title: "Pearl Tools" description: "Interactive pearl tools for necklace lengths, true-size pearls, pearl types, quality, telling real from imitation, care and where pearls are farmed." canonical_url: "https://learnaboutpearls.com/tools/" 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." --- # Pearl Tools Each tool here does one job with the same sourced figures as the rest of the site. Each one also shows its information as a chart, a list or a table, so it still works with JavaScript off. - The [necklace length guide](https://learnaboutpearls.com/tools/necklace-length-guide/) names any length you enter, using the seven standard lengths CIBJO defines, from the collar at 25 to 33 cm to the rope at about 115 cm or longer. [1] - The [pearl size visualizer](https://learnaboutpearls.com/tools/pearl-size-visualizer/) draws a pearl of any size from 1 to 20 mm next to a US quarter, which is 24.26 mm across, and can be set to life size on your screen. [2] - [Compare pearl types](https://learnaboutpearls.com/tools/compare-pearl-types/) sets the five pearl types in the Learn About Pearls dataset side by side, and lets you hide the types and rows you don’t need. - The [quality self-check](https://learnaboutpearls.com/tools/pearl-quality-self-check/) takes you through GIA’s [value factors](https://learnaboutpearls.com/glossary/#value-factors) for a pearl you own, from [luster](https://learnaboutpearls.com/glossary/#luster) and surface to [nacre](https://learnaboutpearls.com/glossary/#nacre) and matching. [3] - The [“are my pearls real?” checklist](https://learnaboutpearls.com/tools/are-my-pearls-real/) goes through the checks that can point to an imitation, and says what only a laboratory can settle. [4] - The [care planner](https://learnaboutpearls.com/tools/pearl-care-planner/) turns GIA’s and CIBJO’s care advice into a plan for your own pearls. [1, 5] - The [pearl regions map](https://learnaboutpearls.com/tools/pearl-producing-regions-map/) shows the countries where each type is mainly farmed. - The [pearl timeline](https://learnaboutpearls.com/history/timeline/), in the history section, lists every dated event in pearl history. The pearl figures come from the dataset, where every value carries its own sources, such as GIA’s pearl FAQ and CIBJO’s pearl guide. [6, 7] ## Every page in this section - [Necklace length guide](https://learnaboutpearls.com/tools/necklace-length-guide/) Enter a length and see its standard name, from collar to rope. - [Pearl size visualizer](https://learnaboutpearls.com/tools/pearl-size-visualizer/) Pearls drawn at true size, from 1 to 20 mm, with each type's typical sizes. - [Compare pearl types](https://learnaboutpearls.com/tools/compare-pearl-types/) The five pearl types in the dataset in one table, with types and rows you can hide. - [Quality self-check](https://learnaboutpearls.com/tools/pearl-quality-self-check/) Answer a few questions about a pearl and read what GIA says about each answer. - [Are my pearls real?](https://learnaboutpearls.com/tools/are-my-pearls-real/) Simple checks that can point to an imitation, and what only a lab can settle. - [Care planner](https://learnaboutpearls.com/tools/pearl-care-planner/) Four questions about your pearls, and a care plan that fits them. - [Pearl regions map](https://learnaboutpearls.com/tools/pearl-producing-regions-map/) The main producing countries of each pearl type, on a map. ## References 1. 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) 2. United States Mint. Coin Specifications. [Source](https://www.usmint.gov/learn/coins-and-medals/circulating-coins/coin-specifications) · [Archived copy](https://web.archive.org/web/20260927173844/https://www.usmint.gov/learn/coins-and-medals/circulating-coins/coin-specifications) 3. Gemological Institute of America (GIA), Gem Encyclopedia. Pearl Quality Factors. [Source](https://www.gia.edu/pearl-quality-factor) · [Archived copy](https://web.archive.org/web/20261016075647/https://www.gia.edu/pearl-quality-factor) 4. June Hanano, Mary Wildman and Philip G. Yurkiewicz (1990). Majorica Imitation Pearls. [Source](https://www.gia.edu/doc/Majorica-Imitation-Pearls.pdf) · DOI [10.5741/GEMS.26.3.178](https://doi.org/10.5741/GEMS.26.3.178) · [Archived copy](https://web.archive.org/web/20251005124434/https://www.gia.edu/doc/Majorica-Imitation-Pearls.pdf) 5. Gemological Institute of America (GIA), News & Research (2015). Tips on Caring for Jewelry. [Source](https://www.gia.edu/gia-news-research-tips-caring-jewelry) · [Archived copy](https://web.archive.org/web/20260113070939/https://www.gia.edu/gia-news-research-tips-caring-jewelry) 6. 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) 7. 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) **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). _Pearl Tools_. Learn About Pearls. https://learnaboutpearls.com/tools/ **MLA:** “Pearl Tools.” _Learn About Pearls_, Unique Pearl, November 4, 2026, learnaboutpearls.com/tools/. **Chicago:** Learn About Pearls editors. “Pearl Tools.” Learn About Pearls. Unique Pearl. Last modified November 4, 2026. https://learnaboutpearls.com/tools/. **BibTeX:** `@misc{lap-tools, title = {Pearl Tools}, author = {{Learn About Pearls editors}}, year = {2026}, howpublished = {\url{https://learnaboutpearls.com/tools/}}, 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 - [Buying](https://learnaboutpearls.com/buying/): How to compare pearl types and quality, what to ask a seller, and when to get a lab report. - [Comparisons](https://learnaboutpearls.com/compare/): Side-by-side comparisons of the main pearl types, and of natural, cultured, saltwater and freshwater pearls. - [Glossary](https://learnaboutpearls.com/glossary/): Pearl terms defined in plain English, each with its sources.