Citigems is one of those affordable jewellery chain stores that sell coloured gems, diamonds and more recently gold. You can walk away with a coloured gem cocktail ring for less than S$1k and the diamonds are of a lower grade and usually clustered together to create a big carat look.
This is the only jewellery chain store I know that also sells crystal and stainless steel accessories. And that is what I purchased today, black mesh chains filled with white crystals. I actually saw this design at MoMA before and didn't get it then. So I am absolutely glad to see this here and didn't miss out on the opportunity to get a set for myself.