How Gemstones are Graded

When selecting a precious gemstone, understanding its quality is paramount. Gemstone grading provides a standardized method to assess a stone's value and beauty, ensuring you make an informed choice. At Robinson's Jewelers, we believe that knowledge empowers our clients to select pieces that resonate with their personal style and standards.

The grading of gemstones primarily revolves around the Four Cs: Color, Clarity, Cut, and Carat Weight. These criteria, established by the Gemological Institute of America (GIA), serve as the global standard for evaluating gemstones.

Color: The Heart of the Gemstone

Color is often the most defining characteristic of a gemstone. It encompasses three main components:

• Hue: The basic color of the gemstone, such as red, blue, or green.
• Tone: The lightness or darkness of the color.
• Saturation: The intensity or purity of the color.

For instance, a sapphire's value increases with the richness of its blue hue, balanced tone, and vivid saturation. At Robinson's Jewelers, our collection features gemstones with exceptional color quality, ensuring each piece captivates the eye.

Clarity: The Window to Purity

Clarity refers to the presence of internal characteristics, known as inclusions, and external features, called blemishes. While some inclusions are natural and expected, their size, number, and position can affect a gemstone's appearance and value. For example, emeralds often contain inclusions, sometimes referred to as 'jardin,' which are accepted in the trade. Our experts meticulously evaluate each gemstone to ensure it meets our high clarity standards.

Cut: Unlocking Brilliance

The cut of a gemstone determines how well it interacts with light, influencing its brilliance and sparkle. A well-executed cut enhances the stone's natural beauty, while a poor cut can diminish its luster. At Robinson's Jewelers, we offer a variety of expertly cut gemstones, from classic round cuts to elegant cushion cuts, each designed to maximize the stone's inherent beauty.

Carat Weight: Measuring Size

Carat weight measures a gemstone's size. While larger stones are often more valuable due to their rarity, it's essential to consider carat weight alongside the other Cs. A well-balanced gemstone offers a harmonious blend of size, color, clarity, and cut. Our collection includes a diverse range of carat weights, allowing you to find the perfect piece that aligns with your preferences.

Beyond the Four Cs: Additional Considerations

While the Four Cs provide a foundational framework for gemstone grading, other factors also play a role:

• Origin: The source of a gemstone can influence its value. For example, Burmese rubies and Colombian emeralds are highly prized for their exceptional quality.
• Treatments: Many gemstones undergo treatments to enhance their appearance. It's crucial to be informed about any treatments, as they can affect the stone's value and care requirements.
• Certification: A certified gemstone comes with a grading report from a reputable gemological laboratory, providing an unbiased assessment of its qualities.

At Robinson's Jewelers, we prioritize transparency and quality. Our gemstones are ethically sourced, and we provide detailed information on their grading and any treatments they may have undergone. We invite you to explore our exquisite collection, where each piece is a testament to our commitment to excellence.