Diamonds

A Quality Diamond Selection

Free Consultations | Custom Jewelry Creation | In Business Since 1998

Free Consultations
Custom Jewelry Creation
In Business Since 1998

What You Need to Know Before You Buy a Diamond

Whether you're looking for a beautiful piece of diamond jewelry or loose diamonds for a custom piece, you'll find only quality diamonds at Lake Saint Louis Jewelers. Our team specializes in supplying only the highest quality diamonds and gemstones. Stop by our full showroom today to see what we have available!

Color

The GIA Color Scale extends from D (colorless) to Z (light yellow or brown).

Although many people think of gem-quality diamonds as colorless, truly colorless diamonds are very rare. Most diamonds used in jewelry are nearly colorless with tints of yellow or brown.

Color grades are determined by comparing each diamond to a master set. Each letter grade represents a range of color and is a measure of how noticeable a color is.

Fluorescence - Some diamonds can emit visible light when exposed to ultraviolet radiation, but fluorescence is not a factor in determining color or clarity grades. However, a description of its strength and color is provided on GIA Reports as an additional identifying characteristic.

Clarity

The GIA Clarity Scale includes eleven clarity grades ranging from Flawless to I3.

Because diamonds form under tremendous heat and pressure, it is extremely rare to find a diamond that lacks any internal and external characteristics. These characteristics are a by-product of its formation and help gemologists separate natural diamonds from synthetics and simulants and identify individual stones.

Cut

The GIA Cut Scale ranges from Excellent to Poor.

A polished diamond’s beauty lies in its complex relationship with light. The magnificent display you see is made up of three attributes:

Brightness is the combination of all white light reflecting from the surface and interior of a diamond.
Fire describes the “flares” of color emitted from a diamond.
Scintillation describes the pattern of light and dark areas and the sparkle you see when the diamond, the light, or the observer moves.

A diamond’s proportions affect its light performance, which in turn affects its beauty and overall appeal. Diamonds with fine proportions, symmetry, and polish optimize their interaction with light and have increased brightness, fire, and scintillation. GIA assesses these factors for standard round brilliant diamonds in the D-to-Z color range.

Carat Weight

One carat equals 200 milligrams in weight.

For diamonds under one carat, each carat is divided into 100 points – similar to pennies in a dollar. 0.75 ct. = 75 points, 1/2 ct. = 50 points.

Beauty and Its Beholder

The 4Cs provide a way to objectively compare and evaluate diamonds, but numbers alone can’t describe a diamond’s mysterious and captivating beauty – for that, you’ll have to visit your local jeweler to see one for yourself.