I like this piece and saw a business woman wearing a similar (toggle with heart tag) under her open collar and it looked really nice. However, it's more of a statement type and I don't think will be very versatile and suitable for everyday wear.
The bean, DBTY or open heart on the other hand, can be worn whenever the occasion and they feel more classic to me. Funny all three collections are by Elsa Peretti
Such a good thing they renewed the contract.
In any case, don't feel so much pressure about buying a classic piece - what you enjoy is important. There'd be no point in buying a dainty 'classic' piece if you prefer something more eye catching. It'll be better to get a piece you know you will get lots of wear from and enjoy wearing all the time.
Good luck building your jewellery wardrobe!
The bean, DBTY or open heart on the other hand, can be worn whenever the occasion and they feel more classic to me. Funny all three collections are by Elsa Peretti

In any case, don't feel so much pressure about buying a classic piece - what you enjoy is important. There'd be no point in buying a dainty 'classic' piece if you prefer something more eye catching. It'll be better to get a piece you know you will get lots of wear from and enjoy wearing all the time.
Good luck building your jewellery wardrobe!