That it is a gold plate.
British Units
Depends on the the type of chain and if it is made with gems or what style.
It is the code of the closing .... (hand made necklace?)
I can't help with the origins of Duragold except that it is a trademark for gold jewelry.. if I remember correctly when I purchased my gold necklace which is stamped 14K Duragold Italy it meant that the necklace had a special treatment or alloy that made it more durable. Don't knock it though, or think its fake. 3 years ago my 14K Duragold Italy necklace was appraised by a jewelry appraiser and certified for insurance for $500.00.
Sounds like you have a 14 caret white gold necklace made in Italy. Yes, it is gold and is fine jewelry not costume or play. It is real. When you see 14K on something that means it is good and not junk.
It stands for the silver content 825 parts per 1000. In UK it's 925 parts silver. Rest is made up by base metals
Braided 22.2 karat gold ... i'm no expert
That is high end sterling rare hard to find
ijc Italy is probably the people who made the necklace. the 925 means the Sterling Silver 925 sterling silver is comprised of 92.5% pure silver alloyed with other metals for strength, shine, and durability. Generally, the remaining 7.5% of the composition includes a harder metal such as copper or nickel.
Italy means it is made in Italy.
The "925" probably refers to the purity: 925/1000 gold.