Rosa Fine Jewelry
Materials & Sustainability
The materials we work with are chosen with the same care as the pieces themselves. 14k recycled gold for its strength. Diamonds — natural and lab-grown — for their fire. Each one traceable. Each one accountable.
01 — The Stones
Natural & Lab-Grown Diamonds
brilliance, either way
A diamond is carbon under pressure. Whether that pressure comes from the earth or a laboratory, the result is chemically identical — hardness of 10, refractive index of 2.417, the same play of light across a finished facet. Our cutters select for fire and clarity, not for origin story.
choosing between them
Lab-grown stones cost less per carat, which means more diamond for the same budget — a real consideration when designing an engagement ring. Natural stones carry a longer story and tend to hold their value across generations. We offer both, and we'll help you decide which one fits the piece you have in mind.
Composition
Carbon
Natural and lab-grown
Hardness
10 / 10
On the Mohs scale
Refractive Index
2.417
Identical in both
sourcing & certification
Every diamond we set comes with a verifiable origin. Lab-grown stones are conflict-free by nature; our natural diamonds are sourced from suppliers who can document responsible mining practices.
For stones of one carat and above, we can arrange a GIA Certificate. For smaller stones or singles, a GRC Certificate is available. Certification requires sending the stone to the testing center before setting, which adds time to our standard 15–20 day production window — worth knowing if you're working toward a date.
02 — The Metal
Solid Gold.
why 14k
Gold purity is measured in karats. 24k is pure gold — beautiful, but soft enough to scratch with a fingernail. 14k gold is 58.3% pure gold, alloyed with silver and copper for structure. It holds a setting, resists the knocks of a ring meant to be worn for decades, and keeps the warm yellow tone that 18k can lean past.
the colour
A softer yellow than 18k, lighter than rose, neutral enough to sit alongside any stone. It reads well against every skin tone we've worked with — which is the only test that actually matters.
The Golden Spectrum
41.6%
10K
58.3%
14K · Ours
75%
18K
91.7%
22K
99%
24K
recycled, not freshly mined
The gold we use is recycled — refined from existing material rather than newly extracted from the ground. The environmental cost drops without changing the metal itself. Gold is gold, regardless of where it last lived.
A note on our practice
We don't believe sustainability is a marketing line. It's a series of small, specific decisions — about where the metal comes from, how the stones are cut, who does the work, and how long the piece will last. We make those decisions one at a time, in favour of the piece outlasting the trend.