How to scale Google Ads spend profitably for a jewelry store

Jewelry demand is concentrated around the moments people buy gifts. The figure above comes from Signet Jewelers' annual report, which says its business is seasonal, "with the fourth quarter historically accounting for approximately 35-40% of annual sales". Signet's fiscal year ends in late January, so its fourth quarter covers roughly November to January. Other stores' peaks can differ, but the lesson holds: a large share of the year's revenue can arrive in a short window, and budgets have to be ready before it does.

1. Split campaigns by price tier and type. Fine jewelry, fashion jewelry and engagement or bridal pieces differ in margin, in order value and in how long shoppers take to decide. Give each its own campaigns and POAS targets.

2. Build budget ahead of each gifting peak. Use your own Shopify sales history to find your peaks, including dates beyond the holiday season such as Valentine's Day or Mother's Day if they matter for your store. Raise budgets on proven products a few weeks ahead, so campaigns have settled before demand arrives.

3. Judge high-value pieces after they've had time to convert. Expensive pieces can take longer to decide on. Set your Google Ads conversion window long enough to capture those sales, and don't cut a campaign for fine jewelry on its first few days of results.

4. Re-cost when metal prices move. Brilliant Earth's annual report notes precious metal prices "have been highly volatile, and significant price increases occurred in 2025". When metal rises, update Cost per item and re-check each campaign's POAS before the next peak, because a target set on old costs will overpay.

   Illustrative arithmetic with made-up round numbers, not a benchmark.

   A campaign ran at POAS 1.4 when a ring cost $494 to deliver. After a metal price rise, the same ring costs $538. On the same revenue and ad spend, POAS falls to about 1.25: still profitable, but a target set on the old cost would now be too generous.

5. Reduce sizing returns before scaling ring campaigns. In Loop's returns data, style or preference drove 33-38% of accessories and jewelry returns, with sizing issues on belts, rings and bracelets. Loop suggests a printable ring sizing chart and clear scale and finish imagery. Fewer wrong-size rings means more of the revenue ROAS reports stays.

6. Measure after the return window. Gift purchases can come back after the holidays, and stores set their own return windows: Brilliant Earth, for example, allows certain returns within 30 days. Judge peak-season POAS once that window has closed.

7. Treat personalised pieces as their own product line. Engraved and made-to-order pieces carry extra labour, take time to produce and can't easily be resold if they come back. Give them their own targets, and show production times in ads and on product pages before each peak, so late orders don't miss the date they were bought for.

What this looks like through the year

Plan each peak from last year's sales and return-adjusted POAS. Scale in the weeks before it, review weekly while it runs, and close the books only after returns are in. Re-cost metal-heavy pieces whenever metal prices move, not just once a year.