Where to Buy Gallium

What Gallium Is and Who Buys It

Element 31 on the periodic table sits between zinc and germanium and stays liquid from 29.76 C up to about 2,400 C. French chemist Paul Emile Lecoq de Boisbaudran isolated it in 1875, predicted years earlier by Dmitri Mendeleev as the missing “eka-aluminium.”

Three groups buy it today. Educators and science YouTubers want 20 to 50 gram vials for melt-in-hand demos and the famous spoon trick. Hobby metallurgists mix it into low-melting alloys like Galinstan, a gallium-indium-tin eutectic used in non-mercury thermometers. Semiconductor engineers buy industrial volumes because gallium arsenide (GaAs) powers LEDs, solar cells, and the radio-frequency chips inside nearly every smartphone. That steady industrial pull keeps small hobby quantities easy to source.

A 20-gram 99.99% hobby vial usually runs $15 to $30. A 100-gram jar drops the per-gram price by roughly half. Below 99.9% you’re into reclaim stock, which is cheaper but streaky.

Purity Grades: 4N Versus 5N

Purity is the most important spec on a listing. Sellers use “N” notation, where the number counts how many nines follow the decimal. Hobby buyers almost always want 4N or better.

• 3N (99.9%). Industrial reclaim grade. Fine for alloy experiments and Galinstan mixes, but can look dull and may contain trace aluminum, lead, or zinc.
• 4N (99.99%). The hobby and classroom standard. Mirror-bright when solid, crystallizes cleanly, pours cleanly. Most Amazon listings fall here.
• 5N (99.999%). Research and semiconductor-precursor grade. Sold by chemistry suppliers in sealed ampoules. Overkill for a melting demo, worth the cost for thin films or doping work.
• 6N (99.9999%) and higher. Used for gallium arsenide wafer production. Rarely sold to the public and priced accordingly.

Why the grade matters. Impurities show up as a grey skin after the second or third melt cycle. At 4N or better, the liquid stays mirror-clean for years. Below 3N, it oxidizes fast and loses the visual appeal that probably sold you on buying it.

What to Avoid When Buying Gallium

Most complaints about online orders trace back to five specific problems. Watching for them saves a return shipment.

• Mislabeled alloys. Some Amazon listings use the word in the title but ship a gallium-indium-tin alloy (Galinstan) that stays liquid at room temperature. Galinstan has uses, but it never solidifies indoors, so the melt-in-hand trick fails. Look for “99.99% pure” or “pure Ga.”
• Missing purity rating. If the listing doesn’t state a grade, assume it’s below 3N. Skip it.
• Summer shipping without insulation. The metal liquefies in any delivery truck above 30 C. Reputable sellers ship with a cold pack from May through September. If the page doesn’t mention temperature-controlled shipping, order in cooler months.
• Counterfeit “solid” ingots. Some sellers have been caught shipping a resin or lead-alloy chunk that looks right but won’t melt. The real element weighs about 5.9 g per cubic centimeter, less dense than lead. If a piece feels too heavy for its volume, be cautious.
• International shipping limits. The element isn’t hazardous, but some carriers classify it as a specialty chemical and refuse delivery to Australia, New Zealand, and parts of the EU. Check the seller’s ship-to list before you pay.

Can You Buy Gallium in Stores?

No major US retailer stocks pure gallium in brick-and-mortar aisles. Walmart, Target, Hobby Lobby, Michaels, and Home Depot all skip the category. This is a chemistry-supply product, not a general retail one.

A few exceptions. University bookstores near chemistry departments sometimes carry sample vials. Rock-and-mineral shops occasionally stock element collections with a labeled specimen. Science museum gift shops (the Exploratorium, the Museum of Science in Boston) sell souvenir vials tied to current exhibits. Call ahead, since stock is sporadic. For anything larger than a souvenir, you’ll need an online order.

Where to Buy Gallium Online

Five sources cover almost every use case, from a 15-gram hobby vial to a 1-kilogram lab order.

Amazon

Amazon is the easiest first stop for a small vial. Third-party sellers list 4N material in sizes from 15 to 100 grams, with Prime shipping on many SKUs. Stick with sellers that clearly state “99.99% pure” and have at least a few hundred reviews. Browse the Amazon selection to compare current options. #ad

RotoMetals

RotoMetals stocks the element in 20-gram, 100-gram, 500-gram, and 1-kilogram sizes. Seasonal sales knock 15 to 25 percent off bulk prices. If you also work with bismuth, indium, or silver, it’s worth a standing bookmark.

Luciteria Science

Luciteria Science sells element samples for collectors and classrooms. Vials ship with an information card, a labeled acrylic holder, and a certificate of purity. Expect to pay a little more per gram than Amazon, but the presentation is better for gifts.

Solution Materials, LLC

Solution Materials, LLC serves educators and researchers. They stock 15-gram bottles up to 1-kilogram bulk jars, all at 4N. Pricing scales linearly, making them the best value past the 100-gram mark.

eBay

eBay lists new and reclaimed stock. New-in-package listings from established sellers are usually fine; auction lots of “used” metal are a gamble. Confirm the purity in writing, and skip listings that don’t show the actual metal.

Specialty Chemistry Suppliers

For 5N or higher, skip consumer channels. Sigma-Aldrich (MilliporeSigma), American Elements, and Strem Chemicals sell research-grade material in sealed ampoules. Expect to submit a business or institutional account.

Top Picks: Best Gallium Products of 2026

Five selections cover the most common buying scenarios, from a first melt-in-hand demo to chemistry-grade research stock.

Best overall: 20-gram 99.99% Pure Vial. A sealed glass or plastic vial of 4N metal is the ideal starter purchase. Enough material to pour a small ingot, run the melting demo twice, and keep some as a reference. Typically $15 to $25. Check price on Amazon, see the eBay listings, or shop RotoMetals.

Best for hand demos: Melting Spoon Kit. Kits bundle a small quantity of 4N metal with a silicone spoon mold, a pour cup, and instructions for the classic disappearing-spoon trick. Roughly $20 to $35. Find on Amazon, check eBay, or search Walmart.

Best bulk value: RotoMetals 100-Gram Ingot. A single 100-gram ingot at 4N, ideal for hobbyists mixing Galinstan or casting small sculptures. Around $50 to $70 depending on sales. Shop at RotoMetals, browse Amazon, or compare on eBay.

Best for collectors: Luciteria Science Element Sample. A display-ready 4N vial sealed in clear acrylic with a certificate of purity. Around $25 to $40. Order from Luciteria or search Amazon for similar kits.

Best chemistry-grade: Solution Materials 15-Gram 4N. A research-ready bottle suitable for teaching labs and independent chemistry projects. About $18 to $28. Order from Solution Materials, compare on Amazon, or browse eBay.

Safety and Storage Notes

The element is non-toxic and safe to handle with bare hands. The US Food and Drug Administration permits related compounds in a handful of approved medical imaging agents, which gives a sense of how benign the pure metal is. Still, a few practical rules keep your supply clean and your surfaces intact.

1. Keep it away from aluminum. The liquid diffuses into aluminum grain boundaries and crumbles the metal through a process called liquid metal embrittlement. A drop on a soda can eats a visible hole within hours. Never pour it on foil, cookware, or airframe parts.
2. Wash hands after handling. The residue is harmless but leaves a dark grey stain on clothing and countertops. Soap and warm water remove it from skin in seconds.
3. Use glass or plastic containers. Both are inert. A small glass vial with a screw cap handles long-term storage. Keep it out of direct sunlight.
4. Warm gently. A hair dryer, a mug of hot water, or body heat melt it. A stovetop or open flame overheats quickly, and vapor inhalation above 200 C is poorly studied. Stick to warm-water baths indoors.
5. Watch for stains on fabric. Drop it on carpet or a shirt and the oxidized residue can set permanently. Work over a washable surface.

If you enjoy experiments with unusual materials, our guide on where to buy dry ice covers another classroom favorite with dramatic visual results.

Fun Experiments to Try

The melt-in-hand demo is the obvious starting point, but the element lends itself to several other easy projects.

• The disappearing spoon. Cast a spoon in a silicone mold, then stir a cup of hot tap water. The spoon liquefies mid-stir because the water sits above 30 C.
• Mirror coating on glass. Rub a small piece onto clean glass with a soft cloth. It spreads into a thin reflective film and makes a decent low-cost mirror.
• Supercooling demo. Melt the metal in a clean vial and chill it. It can stay liquid well below 29 C if nothing triggers nucleation. Tap the glass and it freezes instantly.
• DIY Galinstan. Mix 68% gallium, 22% indium, and 10% tin by weight. The result stays fluid down to about -19 C and is used in modern medical thermometers.

If metals and elements interest you, our guides on where to buy gold and copper mugs point to related sourcing options.

Frequently Asked Questions

Is gallium dangerous to touch?

No. The element is non-toxic and safe for direct skin contact. It melts from body heat into a silvery liquid, leaving a dark grey residue that washes off with soap and water. The only real risks are staining fabric and corroding aluminum objects stored nearby.

How much does a small amount cost?

A 20-gram vial at 99.99% purity typically runs $15 to $30 from Amazon, eBay, RotoMetals, or Luciteria. Prices drop to about $0.50 to $0.70 per gram on 100-gram and larger orders. Semiconductor-grade 5N and 6N material is sold separately through chemistry suppliers at several times those prices.

Does gallium damage other metals?

Yes. It rapidly embrittles aluminum through liquid metal embrittlement, which is why aerospace manufacturers ban it near aircraft. It can also attack zinc, tin, and some steel alloys with prolonged contact. Store it in glass or plastic only.

Can I ship it internationally?

It depends on carrier and destination. Most US sellers ship freely within North America. Australia, New Zealand, and several EU countries classify the metal as a specialty chemical and require a commercial invoice. Check the seller’s ship-to list and your customs rules before ordering.

What purity should I buy for a melting demo?

99.99% (4N) is the sweet spot. It looks mirror-bright when solid, melts cleanly, and stays visually attractive through many cycles. Lower grades oxidize faster and develop a dull grey skin. Higher grades cost more without visible benefit for hand demos.

Is it the same as Galinstan or mercury?

No. Pure gallium is a single element that solidifies at 29.76 C. Galinstan is a gallium-indium-tin alloy that stays liquid at room temperature. Mercury is toxic, regulated, and not sold for hobby use in most of the United States. Only the pure element gives you the solid-chunk-melts-in-your-hand effect.

Final Buying Tips

Start with a 20-gram 4N vial from Amazon or RotoMetals if this is your first order of gallium. Spend an extra couple of dollars for a seller that ships with a cold pack between May and September, and set aside a glass jar and a silicone mold before the package arrives. Upgrade to a 100-gram ingot only after you’ve confirmed you’ll keep using it, and reserve 5N chemistry-grade stock for a project that genuinely needs the extra purity.

Reviewed by the wheretobuyguides.com editorial team. Last updated: April 2026.