Diamants de Paris: more event data, clearer matching

Diamants de Paris creates jewelry around trust. Customers discover a piece, learn how it was made, come back to compare, and buy when the decision feels right.

That kind of journey gives Meta more to learn from than a single click. The brand needed more of the path from discovery to purchase to reach the platform.

After Bily went live, 65% more event data reached the Meta pixel over the next month. In the customer-reported first 15 days, CPC fell 22% and acquisition cost fell 14%.

A stronger signal before more budget

Diamants de Paris had reduced media investment after acquisition performance weakened. Before asking the campaigns to absorb more budget, the team wanted a better feedback loop.

Bily’s Edge Pixel sent supported commerce events through a server-side path. The preserved Event Manager views show the difference clearly: Meta went from seeing seven event types with none rated Great to 11 event types with eight rated Great.

The account result followed

In the first 15 days, cost per click fell 22% and acquisition cost fell 14%. Cheaper traffic was turning into cheaper customers, not stopping at the top of the funnel.

That combination changed the budget conversation. The team could consider scaling from a stronger signal base and better acquisition economics at the same time.

What this shows about Bily

Bily can make a considered customer journey more legible to Meta. It improves the conversion feedback reaching the platform, then gives the growth team a cleaner way to judge whether the account is ready for more investment.

For Diamants de Paris, the sequence was clear: Meta received more event depth and stronger match quality, then CPC and acquisition cost moved down in the customer-reported window.

Signal quality is shown in the preserved Event Manager views. The 65% signal increase and first 15-day business results come from the customer’s approved account report. Performance varies by brand, offer, market, campaign mix, and media strategy.