Been thinking about this a lot lately — most gift guides just say "get a heart necklace" and call it done, but there's actually a decent range once you're specifically looking for a love necklace for girlfriend, especially in sterling silver.
A few things I've noticed make a difference when picking a love necklace for a girlfriend:
Interlocking/double heart designs tend to work better for anniversaries — the symbolism (two lives coming together) actually means something vs. a plain single heart charm.
Rose gold plating over sterling silver looks warmer and more "special occasion" without being a totally different price bracket than plain silver.
Adjustable chains solve the whole "I don't know her exact neck size" problem, which honestly should be the default for any love necklace for girlfriend gift.
Curious what others have found — has anyone gifted (or received) a love necklace for their girlfriend that felt genuinely thoughtful rather than generic? What made it work?