Teresa Mackenzie

About Teresa Mackenzie

Teresa Mackenzie
Licensed Gemological Appraiser · Diamond Grader

Welcome to my world of gemstones. I am a licensed independent gemological appraiser and gemstone dealer (distributor) that offers professional, fair and accurate diamond grading and jewelry appraisals.

For more than 15 years, I have provided both the jewellery trade and retail consumers with the highest quality of service and reliable assessments. My dedication to my craft and commitment to integrity is what sets me apart and has earned me a high-quality reputation in my field.

Every piece tells a story — I help you tell it with confidence.

— Teresa Mackenzie, Principal Gemologist

Licensed Appraiser · Gemstone Dealer

Our Expertise

Services You Can Rely On

Independent, impartial, and meticulously accurate — every assessment is backed by decades of experience.

Diamond Grading

Precise 4C evaluations — Cut, Color, Clarity, Carat — using GIA standards. Certified grading reports for insurance, resale, or personal knowledge.

Jewelry Appraisals

Comprehensive written appraisals for estate planning, insurance coverage, equitable distribution, and donation valuations. Fully documented and defensible.

Gemstone Dealing

Direct access to ethically sourced colored gemstones — sapphire, ruby, emerald, and more. Wholesale pricing for the trade and bespoke selection for collectors.

Trade Services

Bulk diamond grading, sourcing, and inventory valuation for retailers, auction houses, and estate liquidators. Confidential and efficient.

Insurance & Estate Reports

Detailed, photographically documented reports tailored for insurers, executors, and beneficiaries. Recognized by leading underwriters nationwide.

Our Collection

Exquisitely Crafted Jewelry

Each piece reflects timeless elegance, superior craftsmanship, and ethical sourcing.

Engagement Rings

Exquisitely crafted engagement rings featuring ethically sourced diamonds, timeless designs, and bespoke settings.

Each ring is handcrafted with precision, available in platinum, white gold, yellow gold, and rose gold. Our master jewelers ensure every detail reflects your unique love story. We also offer custom design services to bring your vision to life.

Necklaces

Elegant necklaces handcrafted with exceptional gemstones and precious metals, designed to illuminate your presence.

Our necklace collections feature sapphires, rubies, emeralds, and diamonds set in intricate designs. Whether a statement piece or a delicate chain, each necklace is crafted to enhance your natural beauty. Custom lengths and gemstone selections are available.

Bracelets

Graceful bracelets crafted in fine gold and platinum, adorned with brilliant gemstones, offering timeless elegance.

Our bracelets range from classic tennis bracelets to modern cuff designs, featuring diamonds, sapphires, and other precious stones. Each piece is designed for comfort and durability, perfect for daily wear or special occasions. Engraving services are also offered.

Our Crafts

Featured Pieces

AGJS-RG-00503

AGJS-RG-00504

AGJS-RG-00412

AGJS-RG-00415

AGJS-RG-00414

Client Voices

What Our Clients Say

"Teresa's appraisal was meticulous, thorough, and delivered with complete transparency. Her expertise gave me the confidence to insure my heirloom pieces properly."

— Sarah W., Private Collector

"We've worked with Teresa for over a decade on estate valuations. Her reports are consistently accurate, well-documented, and respected by our legal team and insurers."

— James K., Estate Attorney

"As a retailer, I rely on Teresa for bulk grading and sourcing. Her integrity and pricing are unmatched — she's an essential partner in my business."

— Michael R., Jewelry Retailer

Teresa Mackenzie
Licensed Gemological Appraiser · Diamond Grader

Teresa Mackenzie