Every stone.
A deeper story.
Beyond the brilliance lies a world of detail.
We help you understand it.
Where the science of the earth
meets the value of understanding.
Stratum Gemological brings clarity to mineral and gemstone decisions. We connect geological research, specialist assessment, and responsible sourcing with the questions that matter to you.
For jewelry brands, investment teams, and mining organizations, we turn complex information into a considered way forward.
Four disciplines.
One clear perspective.
Specialist support from the first geological question to the next commercial decision.
Asset valuation
& spectroscopy
Understand characteristics, treatment history, and the evidence behind an assessment.
Explore this disciplineGemstone brokerage
& sourcing
Connect a considered sourcing brief with provenance review and practical transaction support.
Explore this disciplineGeological exploration
& research
Read the geological evidence and define the questions that will shape your project.
Explore this disciplineExpedition
safety advisory
Build risk awareness, communications, and field readiness into the plan from the start.
Explore this discipline
Nature creates the complexity. We explore it.More than
meets the eye.
A gemstone’s appearance is only the beginning. Its physical characteristics, origin evidence, and sourcing history each add another layer of understanding.
Our work brings those layers together—with careful analysis, relevant specialist input, and clear communication.
Discover our approach
Meet Jeanne
Anne Fox.
Chief Executive Officer · Stratum GemologicalJeanne Anne Fox is the CEO of Stratum Gemological. Connect with our La Quinta office for project introductions, company inquiries, and professional collaboration.
La Quinta, CA 92253
Your world.
Our perspective.
Every client brings a different question. Our advisory work starts with yours.
For those who
create the exceptional.
Provenance, authenticity, and sourcing support for luxury jewelers and brands.
Luxury jewelers02 / InvestmentFor those who
see the possibility.
Technical due diligence to understand mineral opportunities and their uncertainties.
Investment funds03 / ExplorationFor those who
look beneath.
Independent research and practical planning support for mining organizations.
Mining corporationsLet’s uncover
the possibilities.
A stone, a source, a new opportunity.
Tell us what you have in mind.