there has many famous necklace brand all over the world ,such as Van Cleef & Arpels and SWAROVSKI and ENZO .
they all have more than 1 handred years old .
the monogram necklace is very popular in the world wide , it can be made of gold , silver , alloy , stone or other fantastic material .
you also can design the shape and style of the necklace , you can design a heart shape or a leaves shape , what ever which style you want , you all can get what you want from the manufacturer .
you may focus on one famous brand , which you most love . you can try another brand for the other style , because one manufecture has their most famous product .