Diamond Education

Become A Diamond Expert - Shapes, 4C's, Lab-Grown vs. Natural & More.

Choosing a diamond can feel overwhelming — with countless shapes, sizes, and qualities to consider, where do you even begin? Right here, with us. For over 100 years, our family has helped navigate this same decision, and we've built our reputation on quality, value, and honest guidance.

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Diamond Shape

The first step in selecting a diamond is determining which diamond engagement ring shape you like best. Each diamond shape holds its own unique qualities, so discovering and learning about the many shapes is worth your while. Although a round or brilliant-cut diamond is usually the most popular, we show you all of your options so you can find the right diamond shape to reflect your personal style and personality.

The 4 Cs of Diamonds

One of the first things you often hear about when you're trying to choose the right diamond to buy is the 4 Cs. But what does that mean?

The core combination of a diamond cut, diamond color, diamond clarity, and diamond carat weight signifies a diamond's value and rarity. Learn about the diamond characteristics that maximize the beauty and brilliance of a diamond.

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Cut

The cut is the most important factor in determining a diamond’s brilliance & beauty. The better the cut, the more your diamond will sparkle.

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Color

Diamond color is graded by letter. The higher the color (colorless), the more exclusive and rare the diamond becomes.

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Clarity

The clarity of a diamond is determined by the quantity & degree of internal birthmarks or imperfections called inclusions.

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Carat

Carat is the measurement of diamond weight. 1.00 carat is then divided into 100 points. So a quarter-carat has 25 points and is written as 0.25 carats or ¼ carat.

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Lab-Grown vs. Natural Diamonds

Lab-grown and natural diamonds share the same physical, chemical, and optical properties—both are pure carbon and graded on the same Four Cs (cut, color, clarity, carat). The key difference is origin: natural diamonds form deep within the Earth over billions of years, while lab-grown diamonds are created in controlled laboratory settings over just a few weeks. Even trained gemologists need specialized equipment to tell them apart visually. Ultimately, both types offer the same brilliance, durability, and lasting beauty—the choice comes down to whether you value natural rarity or lab-grown practicality.

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The Rogers & Hollands | Ashcroft & Oak Difference

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