Earrings with Moldavite and Brilliants in White Gold

The 4Cs refer to cut, clarity, color, and carat (weight). These properties are used to evaluate and certify the quality of diamonds, significantly influencing their price. When shopping for diamond jewelry, these are the main aspects you should consider to find the perfect balance between value and beauty that fits your budget.

Learn more in our blog post: The 4Cs of diamond grading >

The cut determines how well a diamond reflects light and is perhaps the most important factor affecting its beauty. All cuts aim to maximize the diamond’s optical properties, balancing its brilliance, fire and sparkle. The round brilliant cut is the most popular, striking the perfect balance between these qualities.

Diamonds can also be cut into various “fantasy” shapes, such as marquise, baguette, heart, teardrop, oval, and princess, offering unique shapes and styles for different tastes. Cut grading considers several criteria, including the type of cut, its proportions relative to weight, the symmetry of individual facets, and the quality of their polish.

Learn more in our blog post: Gemstone shapes: why shape and cut are not the same thing >

Clarity is based on the number, size, and placement of inclusions (internal impurities or imperfections):

• IF (Internally Flawless): No inclusions
• VVS1, VVS2 (Very Very Slightly Included): Very small inclusions
• VS1, VS2 (Very Slightly Included): Small inclusions
• SI1, SI2 (Slightly Included): Inclusions visible with a magnifying glass
• I1, I2, I3 (Included): Medium to larger inclusions visible to the naked eye, also labeled as "P" in the Czech Republic

Diamond color is graded based on how close the stone is to being colorless. Most natural diamonds have a yellow hue. Colors are graded based on this international scale:

• D to F: Colorless
• G to J: Near colorless
• K to M: Faint yellow tint
• N to Z: Brown-yellow tint

Other diamond colors are called fancy and are highly desired, such as green or blue. Fancy color diamond have their own color grading scale and can be treated to enhance their hue.

The weight of diamonds is expressed in carats (ct) to two decimal places. One carat equals 0.2 grams. For earrings or jewelry with multiple diamonds, we specify the total carat weight of all diamonds in the product details.

To clean diamond jewelry, soak it in warm soapy water and use a soft brush to remove any dirt. Only a diamond can scratch another diamond, so protecting its setting is the more important aspect. Avoid wearing your jewelry during strenuous activites, where it can be exposed to excessive pressure, impact and other physical damage that could loosen the stone.

Learn more in our Jewelry care guide >

Modern technology can replicate the exact conditions under which diamonds form in nature, creating real diamonds in a controlled laboratory setting. While natural diamonds take billions of years to form beneath the Earth's surface, lab grown diamonds are produced in just weeks or months. Both types share identical physical, chemical, and visual properties—the only difference lies in their origin.  

Lab grown diamonds are also more affordable, as their production is less labor-intensive and often considered a more environmentally friendly option. This means you can choose larger or higher-quality lab grown diamonds for a significantly lower price than a comparable natural diamond.

Learn more in our blog post: Lab Grown Diamonds: A Miracle of Modern Technology >

Moldavite's color ranges from light green to dark brown-green. Its excellent luster and clarity, combined with its unique hue, give it a distinct and mysterious appearance that is highly sought after in jewelry.

Moldavite is typically cut into rounded shapes such as round, oval, and teardrop, which best showcase its unique color and clarity. For rings and necklaces, the cushion cut (a square with rounded corners) is particularly popular, as it highlights the stone's vibrant green tones.

The weight of moldavites is expressed in carats (ct) to two decimal places, with 1 ct equal to 0.20 g. For earrings and jewelry with multiple moldavites, we provide the total carat weight of all stones in the product details.

Most moldavites are from the Czech Republic, primarily found in the South Bohemia region, with smaller deposits in South Moravia. It was formed around 15 million years ago as a result of a meteorite impact that created intense heat and pressure, fusing terrestrial material with the meteorite itself. This unique event gives moldavite its characteristic green color, natural inclusions, and textured surface, making it a one-of-a-kind gemstone.

As a local Czech brand from Prague, we carefully select moldavites for our jewelry to ensure you receive only the finest quality stones.