ANNE DALE JEWELERS — MANDEVILLE, LOUISIANA
The 4Cs of Diamonds
A GIA GEMOLOGIST’S HONEST GUIDE FOR ENGAGEMENT RING BUYERS
GIA CERTIFIED GEMOLOGIST | MASTER GOLDSMITH ON-SITE | SERVING THE NORTHSHORE SINCE 1983
BEFORE YOU WALK INTO ANY JEWELRY STORE
Understanding the 4Cs is not about sounding knowledgeable. It is about knowing whether what you are being shown is worth what you are being asked to pay.
This guide was written by Anne Dale — GIA Certified Gemologist and Fellow of the Gemological Association of Great Britain — with over forty years of experience evaluating diamonds on the Northshore and beyond. It is not a sales pitch. It is what we tell every couple who sits across from us before we show them a single stone.
The 4Cs are a starting point — not a finish line.
THE FOUR CS
Cut · Color · Clarity · Carat
Cut
The most important C. Determines how light behaves inside the stone. A well-cut diamond sparkles — a poorly cut one looks dim regardless of its other grades.
Color
Measures yellow tint — not the flashes of color you see. D is colorless and the rarest. G–H is where most couples find the best value — faces up white at a fraction of D–F pricing.
Clarity
Grades the natural inclusions inside the stone. SI1 is the sweet spot — clean to the naked eye, only findable with a loupe. If you can’t see it, it isn’t there.
Carat
A unit of weight — not size. Price jumps at round numbers. A 0.95-carat stone is visually identical to a 1.00-carat but sits in a lower price tier. Stay just below the thresholds.
CUT — THE KING OF THE FOUR CS
The one C that is entirely the result of human skill.
Cut is not the shape of the diamond. Round, oval, cushion, emerald — those are shapes. Cut refers to how precisely the stone has been faceted — the angles, proportions and finish that determine how light behaves inside it.
A well-cut diamond takes light in through the top, bounces it between facets and returns it through the top as brilliance, fire and scintillation. A poorly cut diamond leaks light through the sides or bottom and looks dim regardless of its color or clarity grade.
Color and clarity are natural characteristics of the stone. Cut is a choice. A well-cut stone of modest color and clarity will outperform a poorly cut stone with superior grades in both. We never recommend compromising on cut regardless of budget.
The GIA grades cut on five levels: Excellent, Very Good, Good, Fair and Poor. For an engagement ring worn every day for a lifetime — Excellent or Very Good. Full stop.
COLOR — WHAT THE SCALE ACTUALLY MEANS
Yellow tint — and the lack of it.
The GIA color scale runs from D to Z. D is colorless. Z is a stone with visible yellow or brown tint. The scale measures the absence of color — the less color present, the rarer and more valuable the stone.
D · E · F
COLORLESS
Rarest and most expensive. The difference between D and F is invisible to the naked eye.
G · H · I
OUR SWEET SPOT
Faces up white in almost any setting. Excellent value. Where most couples find the right balance.
J · K · L
FAINT COLOR
Visible warmth in white gold settings. Pairs beautifully with yellow gold which absorbs the warmth.
M · Z
VISIBLE COLOR
Significant yellow tint. Rarely appropriate for a center stone engagement ring at any price point.
CLARITY — WHAT YOU CAN AND CANNOT SEE
If you can’t see it with your naked eye — it isn’t there.
Every natural diamond forms under extreme heat and pressure over billions of years. Almost all of them contain internal characteristics called inclusions. The GIA clarity scale grades how visible these are under 10x magnification.
The practical question is not what grade the stone carries — it is whether the inclusions are visible to the naked eye. A stone graded SI1 with inclusions near the edge, partially hidden by a prong, may look cleaner than a VS2 stone with an inclusion positioned directly under the table.
A grading report tells you the grade. A gemologist tells you what the grade looks like in practice. That distinction is why you are here.
CARAT — WEIGHT NOT SIZE
One hundred points make a carat. Price jumps at round numbers.
Carat is a unit of weight, not a measurement of diameter. Two diamonds of identical carat weight can appear different sizes depending on how they are cut — a well-cut one-carat stone will appear larger than a deep-cut stone of the same weight because more of the mass is distributed across the face.
Diamonds are priced in weight categories and the price jumps at round numbers — 0.50, 0.75, 1.00, 1.50 carats. A 0.95-carat diamond is visually indistinguishable from a 1.00-carat diamond but is priced in a lower category.
Staying just below those thresholds is one of the most effective ways to maximize what you get for your money.
WHERE OUR DIAMONDS COME FROM
Anne travels to source diamonds personally.
We do not carry a case of inventory waiting to be sold. We bring in stones specifically for your appointment — personally evaluated by a GIA Certified Gemologist before they ever reach Mandeville.
COME LOOK THROUGH THE LOUPE
See what the grades look like in person.
At Anne Dale Jewelers we source diamonds specifically for each couple. We walk you through every stone, show you what we see through the loupe, and help you find the one that is right for her — not the one with the best grade on paper.
No pressure. No commission. Just the stone, the loupe and an honest conversation.
829 ASBURY DRIVE | MANDEVILLE, LOUISIANA 70471 | (985) 626-4266