{"title":"Iridium Bullion Bars","description":"\u003cp data-pm-slice=\"1 1 []\"\u003e\u003cspan\u003eShop a 1 oz iridium bullion bar at Stack Platinum®. Explore a rare precious metal presented in a custom protective box, with purity documentation included.\u003c\/span\u003e\u003c\/p\u003e","products":[{"product_id":"iridium-the-world-s-rarest-precious-metal-1-troy-ounce-of-99-9-pure-iridium-bullion-bar","title":"Stack Iridium: The World’s Rarest Precious Metal, 1 troy ounce of 99.9% pure Iridium bullion bar","description":"\u003ch1 data-pm-slice=\"1 1 []\"\u003e\u003cspan\u003e1 Troy Ounce Iridium Bar\u003c\/span\u003e\u003c\/h1\u003e\n\u003ch3\u003e\u003cspan\u003eThe Rarest Precious Metal on Earth\u003c\/span\u003e\u003c\/h3\u003e\n\u003ch2\u003e\u003cspan\u003eOwn What Few Can\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eIridium is the rarest naturally occurring precious metal on Earth.\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Geological research places it among the least abundant metallic elements in Earth's continental crust, with concentrations so extraordinarily low that it is measured in mere parts per billion. [1, 2]\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe U.S. Geological Survey identifies the platinum-group metals among the rarest metallic elements in Earth's upper continental crust. Iridium occupies the extreme low-abundance range of these geological measurements. [1]\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eProduced almost entirely as a byproduct of platinum-group mining and associated refining operations, Iridium enters the global market in exceptionally limited quantities. Johnson Matthey's 2026 market estimates place annual worldwide Iridium supply at approximately \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e229,000 troy ounces\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e. [3]\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eEach bar contains over one troy ounce of solid \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e99.99% pure Iridium\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, offering a rare opportunity to own a precious metal that very few investors or collectors have ever physically held.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch2\u003e\u003cspan\u003eExceptional Scarcity\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eIridium is distinguished by characteristics that set it apart from traditional precious metals:\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eAmong the rarest precious metals in Earth's continental crust\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, according to geological abundance research. [1, 2]\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAnnual global supply of approximately \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e229,000 troy ounces\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, based on 2026 industry estimates. [3]\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eProduced primarily as a byproduct of platinum-group mining and refining rather than from dedicated Iridium mines. [4]\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAn exceptionally small and specialized physical bullion market compared with Gold, Silver and Platinum.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIndustrial applications that compete for limited quantities of newly refined metal. [3, 5]\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIts rarity is not created by marketing. \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eIt is defined by geology and the extraordinary constraints of its production.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch2\u003e\u003cspan\u003eA Metal Built to Last\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eIridium possesses extraordinary physical properties that distinguish it from nearly every other metallic element.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eAmong the densest naturally occurring elements\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, with a theoretical density of approximately 22.56 g\/cm³. [2]\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eExceptional corrosion resistance\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, recognized as among the highest of all metals. [2]\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eExtremely high melting point\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e of approximately 2,446°C (4,435°F). [2]\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eNaturally silvery-white metallic appearance and remarkable durability under extreme conditions. [2]\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThese characteristics make Iridium valuable in specialized applications involving aerospace engineering, advanced electronics, high-temperature crystal growth, scientific instrumentation, chemical processing and industrial electrodes. [2, 5]\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eAerospace and Space Exploration\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eIridium's extraordinary heat resistance, chemical stability and durability make it especially valuable for specialized aerospace and space-exploration applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eNASA uses Iridium protective cladding in radioisotope power systems\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, where it helps contain radioactive fuel used to provide electricity for spacecraft and planetary exploration missions. These systems have supported missions operating far from the Sun, where conventional solar power can be impractical. [5]\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIridium-based materials are also studied and used in specialized high-temperature and extreme-environment aerospace components, where reliable performance is essential.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eFew precious metals combine Iridium's extreme scarcity with such demanding technological applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch2\u003e\u003cspan\u003eA Unique Addition to a Precious Metals Portfolio\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eGold has long served as a foundation of precious-metal ownership. Iridium offers something fundamentally different: exposure to one of the smallest and most specialized physical precious-metal markets in the world.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eFor collectors and long-term precious-metal owners, Iridium offers:\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eOwnership of an exceptionally scarce physical element.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eDiversification beyond traditional bullion metals.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eExposure to a metal with geographically concentrated and highly constrained primary production.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eA tangible asset rarely encountered in conventional bullion investment products.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eUnlike Gold and Silver, Iridium does not have a comparably established retail bullion market. Its limited liquidity, specialized market structure and potentially substantial buying and selling spreads should be considered when purchasing it for investment purposes.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eWhether acquired as a scientific collectible, a long-term tangible holding or an addition to a diversified precious-metals collection, Iridium stands apart from conventional bullion.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch2\u003e\u003cspan\u003eAuthenticity You Can Verify\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eEach Stack Platinum® Iridium bar is supplied with documentation supporting its stated purity and composition.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eEvery bar includes:\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eCertificate of Analysis (COA).\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSpectrographic analysis report.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eDocumented 99.99% Iridium purity.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSecure protective packaging.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThese documents provide product-specific analytical information to help buyers evaluate authenticity and purity.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch2\u003e\u003cspan\u003eSpecifications\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eMetal:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Iridium (Ir), Platinum Group Metal\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eWeight:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Over 1 Troy Ounce\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003ePurity:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 99.99% Iridium\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eDimensions:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Approximately 30 mm × 30 mm × 2 mm\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eManufacturing Method:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Pressed-and-sintered Iridium sponge\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eEstimated Bulk Porosity:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Approximately 25%\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eDocumentation:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Certificate of Analysis and spectrographic purity report included\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003ePackaging:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Protective presentation packaging\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cspan\u003eNote: The bar is manufactured from pressed-and-sintered Iridium sponge rather than being cast to full theoretical density. Its estimated bulk porosity describes the internal structure of the bar and does not indicate that 25% of its mass consists of impurities.\u003c\/span\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch2\u003e\u003cspan\u003eLimited Availability\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eWith worldwide Iridium supply measured in only a few hundred thousand troy ounces annually, physical Iridium bullion occupies an exceptionally specialized market. [3]\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eEach Stack Platinum® Iridium bar is carefully packaged and shipped fully insured.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eOwn the rarest precious metal on Earth.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch2\u003e\u003cspan\u003eScientific \u0026amp; Industry References\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003e[1] U.S. Geological Survey — Rare Earth Elements: Critical Resources for High Technology (2002)\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eGordon B. Haxel, James B. Hedrick and Greta J. Orris. Figure 4 compares the atomic abundance of elements in Earth's upper continental crust, identifying the platinum-group elements among the rarest metallic elements.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/pubs.usgs.gov\/fs\/2002\/fs087-02\/\"\u003e\u003cspan\u003eOriginal USGS Publication\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.researchgate.net\/figure\/Abundance-atom-fraction-of-the-chemical-elements-in-Earths-upper-continental-crust-as_fig2_279962164\"\u003e\u003cspan\u003eView Atomic-Abundance Graph on ResearchGate\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003e[2] Royal Society of Chemistry — Iridium, Element 77\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eScientific information on Iridium's rarity, density, corrosion resistance, melting point and physical properties.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/periodic-table.rsc.org\/element\/77\/\"\u003e\u003cspan\u003eRoyal Society of Chemistry: Iridium\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003e[3] Johnson Matthey — PGM Market Report (2026)\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIndustry research and estimated global supply of Iridium and other platinum-group metals.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/matthey.com\/en\/products-and-markets\/pgms-and-circularity\/pgm-markets\"\u003e\u003cspan\u003eJohnson Matthey: PGM Market Reports\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003e[4] European Commission — Critical Raw Materials Factsheets (2020)\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eScientific and economic research on Iridium production, mineral occurrences and supply concentration.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/rmis.jrc.ec.europa.eu\/uploads\/CRM_2020_Factsheets_critical_Final.pdf\"\u003e\u003cspan\u003eEuropean Commission: Critical Raw Materials Study\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003e[5] NASA — Radioisotope Power Systems: Technology Overview\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eNASA's documentation of Iridium protective cladding used around plutonium-238 fuel in spacecraft radioisotope power systems.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/science.nasa.gov\/planetary-science\/programs\/radioisotope-power-systems\/overview\/\"\u003e\u003cspan\u003eNASA: Radioisotope Power Systems\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"Stack Platinum®","offers":[{"title":"Default Title","offer_id":61626910703986,"sku":null,"price":10750.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0889\/2186\/6610\/files\/Iridium_bullion_in_custom_box2a.jpg?v=1775246410"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0889\/2186\/6610\/collections\/DSC_0076_9931055b-f176-4034-810b-2ab0e6261cd9.jpg?v=1791578780","url":"https:\/\/www.stackplatinum.com\/collections\/1-oz-iridium-bullion-bar.oembed","provider":"Stack Platinum®","version":"1.0","type":"link"}