While pure gold doesn't get "fungus" in the way organic matter does (it doesn't rot), scientists discovered a fungus, Fusarium oxysporum, that can interact with gold, dissolving it and then precipitating it as tiny nanoparticles onto its own cells, essentially "mining" and decorating itself with gold, a process that helps the fungus grow. This is a rare interaction because gold is chemically very stable, and the fungus gains a biological advantage from this unique relationship, potentially aiding in finding gold deposits.
Ammonia Solution Method
the fusarium oxysporum fungus, the one responsible for banana wilt, collects gold nanoparticles from the soil and concentrates it into flakes and nuggets or deposits it within the soil's already present rocks, quartz sand grains, dry wall, pennies, and both the dead and living plants the fungus colonizes.
Reith found some of the first convincing evidence that bacteria thrive on gold particles about ten years ago. At multiple sites, thousands of kilometers apart, he and his team found the bacterium Cupriavidus metallidurans living in biofilms on gold nuggets.
In 2019, Dr. Tsing Bohu and her team noticed something remarkable : certain strains of Fusarium oxysporum were capable of extracting gold from their surroundings. Gold's chemical stability usually makes it resistant to reactions, yet this fungus seemed to incorporate it directly into its structure.
Alloys used in gold jewelry, such as copper and silver, can react with sulfur and oxygen, leading to blackening. Exposure to chemicals like perfumes, lotions, and cleaning agents is another culprit. Sweat and skin oils can also cause reactions, especially when you're exposed to high humidity or saltwater.
metallidurans [2]. The bacterium with such potential was first isolated in 1976 from the sludge of a metal processing factory located in Belgium [3]. Its ability to detoxify gold complexes by transforming them into metallic gold was discovered in 2009 [4].
The only danger gold could produce is on the nanoparticle level where it can be destructive to cells when injected directly into them in lab experiments. However since gold nanoparticles are too big to permeate a cell membrane, that threat is nearly non-existent.
TIL that certain metals (including copper, brass, silver, and gold) are naturally antimicrobial. A brass doorknob will self-sterilize in about eight hours if left untouched.
The gold nanoparticles exhibit excellent size dependant antifungal activity and greater biocidal action against Candida isolates for 7 nm sized gold nanoparticles restricting the transmembrane H+ efflux of the Candida species than 15 nm sized gold nanoparticles.
Number 1 - Devil's fingers
The most terrifying fungus out there! The devil's fingers fungus hatches from a slimy, gelatinous 'egg'. As it grows, the tentacle-like arms start to protrude...
Largest Gold reserves by Country (tonnes) 🪙 🇺🇸 US: 8133 🇩🇪 Germany: 3351 🇮🇹 Italy: 2452 🇫🇷 France: 2437 🇷🇺 Russia: 2336 🇨🇳 China: 2264 🇨🇭 Switzerland: 1040 🇯🇵 Japan: 846 🇮🇳 India: 841 🇳🇱 Netherlands: 612 🇹🇷 Turkey: 585 🇹🇼 Taiwan: 412 🇵🇱 Poland: 420 🇵🇹 Portugal: 383 🇺🇿 Uzbekistan: 365 🇸🇦 Saudi: 323 🇬🇧 UK: 310 📌 As of ...
Vinegar is very destructive, so when you apply the vinegar to a fake piece of gold, the vinegar will cause the jewelry to tarnish. Gold is a non-reactive metal, so real pieces of gold will not react to vinegar.
Scrap gold prices per gram vary significantly by purity (karat) and market rates, but generally range from around $50-$80+ for 10K (41.6%), $80-$120+ for 14K (58.3%), $100-$150+ for 18K (75%), and up to $130-$200+ for 22K (91.6%), with pure 24K gold fetching the highest prices, often over $130-$200 per gram depending on the buyer and current spot price. Always check live rates for your specific karat and location, as prices fluctuate hourly and buyers pay less than the spot price to cover costs.
The borax method is a technique of artisanal gold mining, which uses borax as a flux to purify gold concentrates. By using borax, no mercury flour is produced, hence gold recovery increases. Borax is a crystal-forming mineral that can be reduced to a powder, in this case for use as a flux.
During the time of the Prophet Muhammad (peace be upon him), gold was often associated with extravagance, arrogance, and social status. The prohibition of gold for men may have been intended to discourage these negative qualities and promote humility and modesty among believers.
⚠️ Here's a fun fact: the human body contains a tiny amount of gold, about 0.2mg, most of it in the blood🩸 This is the equivalent of one grain of sand.
Best Hypoallergenic Jewelry Metals
Storage and Security Costs
The storage and security costs associated with physical gold ownership create ongoing expenses that eat into investment returns. These costs are often overlooked by new gold investors but can significantly impact long-term performance.
Recent experimental studies suggest that nanosized gold nanoparticles (AuNPs) are able to penetrate into the deeper layer (epidermis and dermis) of rat and human skin. However, the mechanisms by which these AuNPs penetrate and disrupt the skin's lipid matrix are not well understood.
Despite this, in truth it is impossible to produce 100% pure gold based on current technical limits. Removing any tiny molecules of other material is not achievable, and would prove extremely expensive and difficult to even prove. This is why, in common terms, pure gold is 999 or 999.9 not 1,000 fineness.
If you invested $1,000 in gold 10 years ago (around late 2015/early 2016), your investment would likely be worth significantly more today (late 2025), potentially in the range of $2,000 to over $3,000, reflecting substantial price appreciation, though less than the S&P 500 but outperforming during certain periods of market stress, acting as a hedge against uncertainty, with returns varying based on exact entry/exit points and premiums/spreads.
Carefully place the gold piece into a bowl or cup of water. Genuine gold will settle to the base of the cup. If it is not real, it will rise to the top of the cup or remain motionless in the middle. Because of its high density, gold will quickly settle to the bottom of any water container.
As of early January 2026, the gold price in Australia per gram (24k) fluctuates, but you're looking at roughly AUD $215 to $265 per gram for spot/general, with actual buy/sell prices varying by dealer and product, such as around $214.81/gram on Market Index or higher for retail bars from places like ABC Bullion. Always check live dealer sites like ABC Bullion or Melbourne Gold Company for the most current buy/sell rates for specific products.