Every costume jewellery line has to decide whether it is making everyday pieces or occasion pieces, and the strong ones make both without pretending they are the same product. Here the split is clear: Petit CD and CD Mini Bow are designed to be worn daily and forgotten about, while Dio(r)evolution and the CD Disco are designed to be the thing someone comments on. That structure descends from the couture house model, where a collection needed pieces for the client's whole day rather than one look. It also means the line does not date all at once.

Some of the pairs here are pre-owned, which is a good way into the older gold and crystal pieces, like the Dior Gold Crystal Oval Logo Necklace. Clair D Lune and CD Mini Lily are the fine-chain end of the range.

Petit CD is the anchor of the range and the piece I would wear every day. CD Disco and CD Multi Flowers above are the most decorative. Below, the Oblique Dior necklace translates the jacquard pattern into metal, which is the most literal move here, Night Code is the darkest in tone, and the 30 Montaigne short necklace borrows from the bag hardware. For the quiet end, the pre-owned Dior Gold CD Necklace sits next to the Dior Silver Crystal Necklace, one plain and one sparkling.

Chain length is the decision that matters most and the one people skip, because a necklace that sits at the wrong point on the chest will simply never get worn. Measure against something you already own. Plated chains tarnish at the clasp first, where skin contact is constant and cleaning is hardest.

Layering two house necklaces sounds good and usually produces tangling rather than depth, so pick one and let it work. Pendant weight also matters, since a heavy charm on a fine chain will sit crooked. Buy the small everyday piece first, because that is the one you will get years out of. If you want to keep browsing, I also put together A Dior Ring Is The Smallest Piece Of The House You Can Own and Paperclip necklace.