
642: I Quit My 15 Year Career To Build a Jewelry Business — and Hit $400,000 in My First Year
19/3/2026
0:00
59:31
Rosie Collins had a Christmas epiphany about baby shower gifts—every present focused on the baby, never the mom. That single observation turned into Deja Marc, a multimillion-dollar personalized jewelry brand that captures fingerprints, handwriting, and meaningful moments in elegant, timeless pieces. Within a year, she hit $400,000 in revenue while working full time. The secret? An engraving fairy she never actually met who packed orders while Rosie was at work, and an obsessive focus on mastering the craft before outsourcing anything.
In this interview, the founder of Deja Marc breaks down how she built this customer-obsessed brand without burning out, why she tracks MER (marketing efficiency ratio) over ROAS as her primary metric, and her counterintuitive take on Black Friday promotions—why doing 40 hours instead of two weeks can deliver the same results without destroying your team or margins.
What you'll learn in this interview:
How a Christmas epiphany about baby shower gifts sparked a multimillion-dollar brand
Why Rosie quit her agency job after hitting $400K in year one
How she found an "engraving fairy" to pack orders while she worked full time
Why mastering the craft yourself before outsourcing is critical
How she built a relationship with her first supplier that still lasts today
Why she tracks MER (marketing efficiency ratio) instead of ROAS
Her approach to Black Friday: 40 hours vs two weeks of promotions
How organic contribution to paid marketing changes profitability
Why she believes in building expertise in-house before delegating
The importance of unit economics and sustainable growth over hustle
If you're building a product-based business, juggling full-time work with side hustle ambitions, or trying to scale profitably without burning out, this conversation will fundamentally change how you think about sustainable growth, customer obsession, and building a brand that lasts.
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CONNECT WITH NATHAN CHAN
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LinkedIn → https://www.linkedin.com/in/nathanhchan/
CONNECT WITH ROSIE COLLINS
Instagram → https://www.instagram.com/rosie.c._/
Instagram → https://www.instagram.com/dejamarc/
Website → https://dejamarc.com/
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