Large GIA Natural Diamond Sourcing for Serious Collectors

Most jewelry stores are limited to the diamonds in their own showcases. Bella Andrea & Co. works differently.

Through an established network of trusted suppliers, manufacturers, cutters, and jewelry partners, we provide access to an extensive selection of certified lab-grown and natural diamonds—including exceptional large-carat stones rarely available through conventional retail jewelers.

Whether you are seeking a significant engagement diamond, an extraordinary statement stone, or a specific shape, size, color, and clarity combination, we can conduct a private search tailored to your goals.

Specialists in Exceptional-Size Diamonds

Bella Andrea & Co. has particular experience sourcing unusually large diamonds, including statement-scale rounds, marquises, ovals, radiants, cushions, emerald cuts, and other shapes.

Our access is not limited to what is currently displayed on our website. If the right diamond is available through our supplier network, we will work to locate and evaluate suitable options for you.

What we can source

• Certified lab-grown diamonds
• Certified natural diamonds
• Large-carat and statement-scale stones
• Round, oval, marquise, radiant, emerald, cushion, pear, heart, Asscher, and princess cuts
• Fancy-color diamonds
• Matched diamond pairs
• Diamonds for custom engagement rings and statement jewelry
• Specific color, clarity, measurement, and budget requests

How the process works

1. Private consultation
We discuss your preferred shape, size, color, clarity, certification, budget, and timeline.

2. Targeted search
We search our supplier relationships for suitable certified options.

3. Comparison and review
You receive carefully selected options with grading information, measurements, imagery, and pricing where available.

4. Selection and design
Once the diamond is chosen, Bella Andrea & Co. can coordinate a custom setting designed specifically around the stone.

Tell us what you are searching for. Bella Andrea & Co. will conduct a private diamond search through our trusted supplier network and present suitable options based on your priorities.

Every diamond is evaluated individually

We consider each stone’s grading report, proportions, measurements, visual performance, value, availability, and suitability for the intended design.

All natural, earth-mined diamonds sourced by Bella Andrea & Co. are graded by GIA. All lab-grown diamonds we source are CVD-grown and graded by IGI.