Sourced From Across the Globe

We actively source rough, tumbled, and cut stones from established mining regions and trusted partnerships across multiple continents, including:

• Asia India, Sri Lanka, Thailand, and Myanmar — for sapphires, rubies, and semi-precious stones.
• South America Brazil, Colombia, and Bolivia — for amethysts, citrines, tourmalines, and emeralds.
• Africa Madagascar, Zambia, Tanzania, and Nigeria — for garnets, sapphires, tanzanite, and vibrant quartzes.
• North America & Australia Select regions for unique opals, turquoise, and specialty rough.

By maintaining a diverse, worldwide supply chain, we ensure a consistent inventory, access to rare finds, and insulation from regional supply disruptions. We partner directly with ethical miners, lapidaries, and established cutting houses to ensure fair trade practices and traceability from the earth to your hands.

Our Quality Commitment — The 4‑C Standard

We don't just buy inventory; we curate it. Every stone that passes through our facility must meet our internal Quality Benchmark, which balances nature's uniqueness with professional consistency. Our grading focuses on:

1. Color (Hue & Saturation)We select stones with the most vibrant, natural, and even color saturation for their respective species. We reject stones that are overly pale, muddy, or visually inconsistent.
2. Clarity (Integrity)While natural inclusions are proof of authenticity, we grade based on the stone's intended use (rough, tumbled, or faceted). We ensure that structural integrity is solid for tumbling and carving, and eye‑clean standards apply for our premium faceted lines.
3. Cut & Shape (Finish)For polished and faceted stones, we prioritize precision and symmetry. For rough and natural stones, we prioritize the beauty of the natural crystal formation and minimize breakage.
4. Carat Weight (Accuracy)We strictly adhere to accurate weight measurements. Our packs are standardized (e.g., 100 carats) to ensure you receive exactly the quantity you pay for, with minimal tolerance variance.

Our Quality Control Process

To ensure that CGB stands for reliability, every shipment we receive undergoes a strict 3‑stage internal verification before it ever reaches our inventory or your cart:

1. Visual & Structural InspectionUpon arrival, we inspect for major fractures, unnatural treatments, or structural weaknesses that would affect the stone's durability during jewelry making or tumbling.
2. Verification & GradingWe verify the species against the supplier's claim (e.g., confirming Amethyst vs. synthetic purple quartz, or Citrine vs. heat‑treated Amethyst). We use standardized color and clarity grading tools.
3. Rejection & RefinementAny batch that does not meet our A‑grade or B‑grade standards is rejected and returned to the source. We only inventory what we would personally craft with.

Transparency & Trust

We understand that trust is the foundation of the gemstone business. Therefore, we maintain the following generalized policies:

• Treatment Disclosure.We clearly indicate if a stone is naturally colored or has been enhanced through heat treatment (which is standard industry practice for many corundums and quartzes).
• Continuous Improvement.Our sourcing team is constantly traveling — virtually and physically — to discover new origins and better grading techniques, ensuring our global supply chain remains the backbone of our quality.

Why This Works for Your Business

• Flexible It doesn't lock you into a single country, so you can pivot suppliers easily.
• Professional It addresses the 4‑Cs and QC process, which builds customer confidence.
• Reassuring Mentions rejections and transparency, showing you have standards.