The price of a 1 carat yellow diamond can range from $3,000 to $16,000+, depending on how it's graded and the intensity of its color. Intense yellow diamonds, such as Canary Diamonds, are the most expensive, and usually cost at least $10,000 for a 1 carat diamond. Less intense yellows can be found in lower-priced diamonds. Canary diamonds were first discovered in 1793 by an English gold miner who was searching for gold when he came across these stones lying in the bed of a river. He took them back to his home country where they became popular gifts with gold miners because they would help protect them from inhaling coal dust which is known to cause cancer. Today, canary diamonds are still given as gifts by people who work with metals because they know that anyone working with gold or silver will be protected from toxic chemicals that could be absorbed through their skin. Canary diamonds have very high levels of uranium contamination which can be several times higher than normal diamonds. This makes them extremely radioactive and unsuitable for jewelry purposes. They also have other impurities such as sulfur which gives them their yellow color. Despite all this, canary diamonds are still valued highly by jewelers because they are rare and unique. There have been attempts over the years to replace canary diamonds with counterfeits but no substitute has been able to match their quality or price.