Jewelry Certificates and Diamond Grading
Confidence Through Documentation
At Harbour Galleries, we believe that trust begins with transparency. Whether you’re purchasing a one-of-a-kind estate piece or bringing in a family heirloom for evaluation, you deserve complete confidence in what you own.
This Certificate Gallery showcases the level of documentation and grading detail you can expect from our professional appraisal services — performed through our affiliated company.
All appraisals and verifications are conducted by Alan, a certified gemologist with decades of experience identifying gemstones, evaluating antique jewelry, and documenting pieces for insurance, estate, and personal records.
Understanding Diamond Grading: The 4Cs
Each appraisal and certificate includes:
Cut
A diamond’s proportions, symmetry, and polish. More than shape, the cut determines brilliance.
Color
Graded on a scale from D (colorless) to Z (light yellow or brown). Antique diamonds often have warmer tones.
Clarity
The presence (or absence) of internal or external flaws, known as inclusions or blemishes.
Carat Weight
A measure of the diamond’s weight, not necessarily its size.
We use these standards when evaluating antique, vintage, and modern diamonds — whether they’re part of a purchase, appraisal, or custom design.
Sample Certificates and Reports
Each appraisal and certificate includes:
- High-resolution imagery of the jewelry item, showing all relevant details
- Complete gemstone and metal identification, including diamond grading (when applicable)
- Measurement and weight breakdowns for all major stones
- Clarity, cut, color, and carat weight details following industry grading standards
- Professional narrative description, including setting style, era, and condition
- Purpose of valuation — insurance, estate, liquidation, resale
- Estimated market value with supporting rationale
- Gemologist’s signature, date, and credentials
This level of detail not only protects the owner’s investment but also adds long-term value to the piece for future resale or inheritance.
Why Documentation Matters
Whether you're insuring your collection, planning your estate, or simply want peace of mind, having detailed documentation is crucial. Here’s why:
Insurance Protection
In the event of theft, loss, or damage, insurance claims require certified valuations and clear imagery.
Estate Planning
Proper documentation ensures fair distribution of assets and legal compliance.
Resale and Consignment
Buyers and dealers will expect formal grading and condition reports.
Heirloom Provenance
Written documentation adds context and value for future generations.
Frequently Asked Questions
Can I get a certificate for a piece I already own?
Yes. We offer appraisal and documentation services for jewelry purchased elsewhere or inherited. You do not need to be a prior customer.
Do certificates include diamonds only?
No. We certify and appraise all types of gemstones, including sapphires, emeralds, rubies, and semi-precious stones — as well as watches, flatware, and antique hollowware.
Are these certificates accepted by insurance companies?
Yes. Our appraisal reports meet or exceed documentation requirements for major insurance carriers.
Can I see a sample certificate before booking?
Yes. We’re happy to share examples during a consultation, either in person or via email.
Schedule an Appraisal or Consultation
To view sample certificates or begin your own appraisal process, please contact us to schedule an appointment. Each item is evaluated with the highest level of care and confidentiality, using advanced gemological equipment and industry-trusted grading methods.