First you must determine the volume of the gold object. This can be done by using a container with water that is on a scale. The weight of the container and water has to to be recorded or the scaled "zeroed out" with the water and container on it. Next you suspend the gold object with a fine thread in the water. For simplicity it is better to use grams for weight and cubic centimeters (1 cc= milliliter) for volume. The difference of weight caused by the suspended gold is equal to the weight of water with the same volume as the gold object. Since one cubic centimeter of water weighs one gram this ralationship allows for conversion from weight directly to volume. Now that you know the volume of the object you need to multiply it by the density of gold, 19.3 grams per cc. Now put the gold object on the scale and see how much it weighs. The calculated answer and the scale reading should be the same if it is made of gold.
Gold can only be made out of gold, and nothing more. If gold were to be made out of something else, it wouldn't be gold anymore.
A LOT of jewelry is made from real gold, and other REAL metals. It's made from real gold to be worth something, something spacial, something that you are proud to wear.
Assay it
One can tell if something is 24k gold by poking it with a sharp object. Gold is a soft metal, and the higher the karat the softer the metal, therefore if it makes a dent or leaves a mark, then the gold is 24k. Also, 24k gold is much more yellow, so, the color can help to identify 24k gold. And finally, bringing it to a jeweler to get it appraised will help to determine if it is 24k gold.
If it's sterling silver, it is not magnetic. Real gold and silver are not magnetic.
How can I tell gold
Gold can only be made out of gold, and nothing more. If gold were to be made out of something else, it wouldn't be gold anymore.
how would anyone know if something is made of all gold or gold an silver
"of gold," meaning something made out of gold.
you must take scratch card or paper or something and scratch it. if it is gray, gold, or something like that, its gold
A LOT of jewelry is made from real gold, and other REAL metals. It's made from real gold to be worth something, something spacial, something that you are proud to wear.
You can't use a magnet to determine if something IS gold. However, if the specimen reacts to the magnet is is certainly NOT gold.
Have it assayed by someone who knows how. It's not really something you can do yourself at home.
Determine the objects mass then submerse it in water, the volume of the water displaced is equal to the objects volume. Now get an equal mass of gold and submerse that in the the same amount of water and record the volume of water it displaces. If the volume of water displaced by the first object is eqaul to the volume of water displaced by the gold then the first object is made out of gold, if however the volumes dont match then it is not made out of gold.
Assay it
There is nothing called a "gold" "gem". Something is either made of gold or it is a gem, but it is not both.
Yes, the noun gold is a material noun. A material noun is a word for something that other things are made from; many things are made from gold.