Gold necklaces can break depending on their construction and care. Gold is malleable and can be bent or stretched if receiving excessive pressure. If a necklace is dropped or handled roughly, it may become damaged. Poorly made gold necklaces may also be more prone to breakage due to weak links or clasps in the chain. 

Another factor that could contribute to a gold necklace breaking is wear-and-tear from overuse. The chain may become brittle and eventually snap from stretching or other damage if regularly worn. 

Taking good care of a gold necklace by avoiding contact with harsh chemicals, not pulling on the chain too hard when taking it off or putting it on, and storing it properly when not in use can help ensure its longevity and keep it looking beautiful for years to come.

Gold necklaces do not cause skin tags directly, but they can contribute. Skin tags are usually caused by friction, so when a necklace rubs against the skin, it can cause irritation that leads to skin tags. 

Necklaces may also harbour bacteria and other germs that could lead to infection and further inflammation. In addition, necklaces are often made of metals such as copper or nickel, which may cause an allergic reaction in some people. 

If you are prone to skin tags or develop them frequently, it is best to avoid wearing gold necklaces and opt for soft materials such as fabric instead. In addition, avoiding tight-fitting jewellery is the best way to prevent skin tags from forming around the neck area.

Gold jewellery can contain nickel, depending on the type and composition of the gold. Gold is often alloyed with other metals to make it stronger, and these alloys can contain nickel. The proportion of nickel in a piece of gold jewellery can vary widely, ranging from almost none to as much as 20%. In addition, some gold plating processes use nickel as one of the base layers, which means that the finished product may still have traces of nickel. 

If you're allergic to nickel and want to wear gold jewellery, read the label carefully or ask your jeweller for more information about what metals are present in the jewellery you're considering buying.

Yes, gold jewellery can turn green. This is typically the result of a chemical reaction with the skin's oils or from contact with chlorine or other chemicals. In addition, the green colour is caused by exposure to copper, often used as an alloy in gold jewellery. 

If a piece of jewellery has been exposed to these elements for some time, it may form a thin layer of copper oxide on the surface, appearing as a green patina. 

To avoid this discolouration, it's best to keep gold jewellery away from harsh chemicals and store it in a dry place when not worn. In addition, regularly cleaning with warm water and mild soap can help prevent tarnishing and discolouration.

Experienced jewellery makers usually make gold pendants. Making a gold pendant begins with melting the gold in a furnace and then pouring it into a cast to create the desired shape. 

Once cooled, the piece is heated to make it more malleable and ready for further work. Jewellers then use tools such as hammers, files, and polishers to shape and refine the piece until it reaches its desired form. 

Finally, stones or other decorations can be added to complete the design before it is polished and buffed to give it a glossy finish. The result is an exquisite gold pendant that can be worn as an elegant accessory or a special gift.