Reviewed September 2026 against the Alaska Division of Geological & Geophysical Surveys and USGS Mineral Commodity Summaries.

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Alaska’s state gemstone is nephrite jade, officially designated on June 24, 1968. That single fact answers most of what people search for — “alaska state gemstone,” “gemstone of alaska,” “state gemstone of alaska” — but the more useful question is where it comes from, what makes it different from other states’ picks, and how a satellite-mapping company like Farmonaut fits into the story of finding it without tearing up the ground to do so.

This piece covers the designation itself, the geology behind it, how Alaska’s pick compares with California’s state gemstone (benitoite), and the tools now used to locate gem-bearing rock from orbit instead of by trial-and-error trenching.

The Short Answer: What Is Alaska’s State Gemstone?

Alaska’s legislature designated jade — specifically nephrite jade — as the official state gemstone on June 24, 1968, according to the Alaska Mint’s historical account of the designation. The primary source deposits sit on the Seward Peninsula, in the Kobuk River region of northwest Alaska, where jade occurs in metamorphic matrix rock alongside serpentinite. This is distinct from Alaska’s state mineral, which is gold, and its state rock/state fossil designations, which cover separate specimens entirely — a distinction that trips up a lot of searchers looking for “alaska state rock” or “alaska state mineral” and landing on jade pages by mistake.

Jade was already culturally significant in the region well before the 1968 designation: Alaska Mint’s account traces organized discovery of jade deposits to Jade Mountain in 1883, decades before statehood.

Nephrite Jade: Identity, Properties, and Geological Origin

“Jade” is a trade name that covers two distinct minerals — nephrite and jadeite. Alaska’s deposits are nephrite, a calcium-magnesium silicate in the amphibole group, not jadeite (the rarer, typically more vivid variety associated with Myanmar). The two are often confused in casual writing, which is part of why searches for “alaska gemstone” and “alaska gems” surface so much imprecise content.

• Hardness: Nephrite rates 5–6 on the Mohs scale, according to the Alaska Mint’s technical summary of the material — softer than corundum (9) but tough enough that it resists chipping better than harder, more brittle gems.
• Specific gravity: 3.0–3.3, per the same source — meaningful for identification, since it lets a specimen be distinguished from serpentine or other green rock by weight alone.
• Toughness over hardness: Nephrite’s interlocking fibrous crystal structure is what makes it resistant to fracture, which is why it was historically used for tools and blades long before it became a jewelry material.
• Color range: Alaska nephrite runs from deep forest green to black, with the color driven by iron content in the crystal lattice.

Gemstone vs. Mineral vs. Rock: Alaska’s Three Different Symbols

Alaska maintains separate official symbols for gemstone, mineral, and fossil categories, and conflating them is the single most common error in searches like “alaska state mineral” or “alaska state stone.” The Alaska Division of Geological & Geophysical Surveys draws the line explicitly:

If a search lands here looking for “alaska state stone” or “alaska’s state gem,” the answer in every case is the same: jade. There is no separate “state stone” distinct from the gemstone designation in Alaska’s official symbol list.

Gemstones From Alaska: Jade Is Not the Only One

Jade is the constitutionally designated symbol, but it isn’t the only gem material found in the state. Alaska also produces garnet (notably almandine garnet near Wrangell, some of which is sold in matrix), and gold — though gold is classified as the state mineral rather than gemstone. For anyone searching “gemstones from alaska” or “gemstones in alaska” expecting a broader list: jade remains the headline material both by designation and by collector volume, with garnet as the notable secondary gem export.

The jade-bearing zones sit within or near multi-use land — forest, subsistence, and mineral-claim areas on the Seward Peninsula — which is part of why access and extraction have historically been small-scale and selective rather than industrial. There is no published USGS or Alaska DGGS breakdown of jade-specific production volume, export revenue, or the number of active jade claims currently being worked; these are gaps in publicly available state-level data, not omissions on our part. If you need current figures for a specific claim or region, the Alaska DGGS (dggs.alaska.gov) is the primary authority to query directly.

Alaska Jade vs. California Benitoite: A Side-by-Side Comparison

California’s state gemstone, benitoite, offers a useful contrast because the two states’ designations sit at opposite ends of the rarity spectrum. Benitoite was discovered in San Benito County in the early 1900s and remains confined to a locality regarded as one of the most geographically restricted gem sources in the country — commonly described as covering roughly one square mile of workable ground, versus jade’s much broader distribution across the Seward Peninsula and other Alaska localities.

The practical takeaway for anyone comparing the two: benitoite’s extreme geographic confinement makes it one of the rarest gems mined in the United States by locality count, while jade’s wider distribution across Alaska has historically supported more sustained, if still small-scale, extraction. Neither state publishes a current annual production figure specific to its own gemstone at the state level — both are folded into broader USGS national gemstone statistics, discussed below.

What the Production Data Actually Shows

Here is where most Alaska-jade content online gets vague, so it’s worth being precise about what is and is not published. The U.S. Geological Survey’s Mineral Commodity Summaries reported $95 million in total U.S. domestic gemstone production value across all gem types combined for 2021 — this is a national, all-gemstone figure, not an Alaska-specific or jade-specific number. USGS does not break this figure out by state or by individual gem material in its publicly accessible commodity summary tables.

That means a specific claim like “Alaska produces X carats of jade annually” or “Alaska jade is worth $X per year” cannot currently be sourced to any public USGS or Alaska DGGS dataset — those breakdowns simply are not published at that granularity. If you need a current figure for research, business planning, or reporting purposes, USGS re-releases its Mineral Commodity Summaries annually, typically in the first half of each year, with the latest edition available through the USGS data catalog. That is the correct place to check for an updated aggregate figure, though it will still not isolate Alaska jade specifically.

How Jade Deposits Are Found — Then and Now

Historically, jade prospecting in Alaska has followed the same pattern as most alluvial and hard-rock gem hunting worldwide: surface float is traced upslope to its source outcrop, often across terrain with no road access and a short field season. The Kobuk River jade fields are remote enough that ground-based prospecting there has always been expensive and slow relative to lower-48 gem localities.

That is the specific gap satellite-based mineral mapping is built to close — not by replacing fieldwork, but by narrowing where fieldwork needs to happen before a crew or claim-holder commits time and money to a remote site.

What Multispectral and Hyperspectral Data Can Actually Flag

Nephrite forms in specific metamorphic settings — typically where ultramafic rock (serpentinite) meets metasomatic alteration zones. Satellite-based multispectral and hyperspectral sensors can pick up the surface mineralogical signatures associated with these alteration halos — iron-oxide staining, magnesium-silicate spectral signatures, and structural lineaments consistent with the shear zones jade tends to form along. None of this confirms gem-quality material is present; it narrows a large search area down to the zones worth a ground visit, which is the actual value proposition for a remote, low-infrastructure region like the Seward Peninsula.

• 🎯 Target narrowing: Farmonaut’s mineral detection platform screens multispectral and hyperspectral imagery for alteration signatures before any ground crew is deployed, which matters most in exactly the kind of remote, seasonal-access terrain the Seward Peninsula presents.
• 🌎 Track record: The platform has been used to map mineral targets across more than 18 countries, spanning gold, copper, and industrial mineral contexts in addition to gemstone-adjacent alteration mapping.
• 📊 3D targeting: Satellite-driven 3D mineral prospectivity mapping helps translate a surface anomaly into a drill or trench target, reducing exploratory disturbance in areas with limited road access.

Calculator: Estimate a Jade Piece’s Rough Value Range

Nephrite jade pricing is not published as a single state-level figure — it depends on weight, color/translucency grade, and finish. The calculator below lets you plug in your own weight and quality assumptions to get a rough order-of-magnitude range for a cut or polished piece; it is a starting-point tool, not a market quote, since no verified Alaska-origin price index exists publicly.

Assumptions and exclusions: This tool uses illustrative per-gram price bands by quality grade, not a published Alaska-specific price index — none currently exists publicly. It excludes provenance premiums, carving/artisan labor value, certification costs, and market fluctuation. Use it to compare relative scenarios (weight vs. grade vs. finish), not as an appraisal.

Satellite-Based Mineral Detection and Farmonaut's Role

The broader case for satellite-based exploration isn't specific to jade — it applies across gemstone, precious metal, and industrial mineral targets, and it's the same technology stack used across the videos embedded through this article for gold and copper targets in other regions. The core mechanism stays constant: multispectral and hyperspectral imagery flags alteration and mineralization signatures over a wide area, letting a field team prioritize where to walk, drill, or trench instead of covering ground blind.

• ⏱️ Timeline compression: Exploration screening that once took a full field season of on-ground traversing can be narrowed to weeks of remote-sensing analysis before a crew is ever mobilized.
• 🌱 Non-invasive by design: Because the initial screening pass happens entirely from orbit, it adds zero ground disturbance to sensitive or remote terrain during the earliest, most speculative phase of a search.
• 🗺️ Applicable beyond gemstones: The same detection pipeline underlies the gold, copper, and polymetallic case studies shown below — from British Columbia to Ghana — because the underlying alteration-mapping method is commodity-agnostic.

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Multimedia: Satellite Mineral Exploration in Practice

The following case studies illustrate the same detection approach applied to different commodities and regions — useful context for anyone evaluating whether satellite-based screening applies to a jade claim, a gold prospect, or another target entirely.

Frequently Asked Questions

Summary

Alaska's state gemstone is nephrite jade, designated in 1968 and sourced primarily from the Seward Peninsula and Kobuk River region. It sits alongside — but distinct from — gold, Alaska's state mineral. Compared with California's benitoite, jade is far more widely distributed geographically, though neither state publishes a current jade- or benitoite-specific annual production or value figure; the only public number available is USGS's $95 million national aggregate for all U.S. gemstone production in 2021, a figure USGS updates annually through its Mineral Commodity Summaries.

For anyone with a specific claim, region, or exploration question — jade or otherwise — satellite-based multispectral and hyperspectral screening narrows a large search area to the zones worth a ground visit, without the cost and disturbance of blind traversing.

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