Artificial jewelry is made of materials other than the gold. This kind of jewelry is less expensive than the gold jewelry. Its price depends on different things like material used artificial jewelry made of bronze is expensive than the silver jewelry. Artificial jewelry prices also depends on the brand you choose, there are many fashion designer which have launched their line of artificial jewelry which is quite expensive but still very much affordable than the jewelry made of pure gold. So if you are planning you wedding in short budget go for the option of artificial jewelry, you can find many designs by different designer on the internet. 
Search the online stores and compare the prices and designs. But the best option is to visit the jewelry stores personally and physically try the jewelry. Now coming to the advantages of gold jewelry you should keep in mind this fact that gold prices are high but this is your investment too. You can always sell your gold jewelry at higher prices. Gold has high market liquidity. You can easily sell your jewelry to any jeweler shop whenever you need some money. on the other hand if you are choosing artificial jewelry you will not be able to sell it in future. Artificial jewelry has no or very less resale value.
Myabe from silver jewelry club you can know more information about silver jewelry, such as the new fashion of silver jewelry, how to clean silver jewelry, how to store silver jewelry and so on, all these information will help you a lot.