The 5Cs of Diamonds Guide

A Guide by House of Windsor Jewellers

The 5Cs of

Diamonds

Choosing the perfect diamond is an art—guided by five essential characteristics known as the 5Cs: Cut, Colour, Clarity, Carat Weight, and Craftsmanship. Understanding these elements will help you select a diamond that reflects both beauty and value.

NO.1

Cut- The Sparkle Maker

Cut refers to the quality of a diamond's craftsmanship. It determines how beautifully light enters and reflects from the diamond.

A well-cut diamond creates:

• Brilliance – Bright white sparkle
• Fire – Rainbow color flashes
• Scintillation – Sparkling movement when the diamond moves

Cut Grades:

Excellent Very Good Good Fair Poor

Excellent Cut

Maximum sparkle & beauty

Poor Cut

Light escapes from sides or bottom, making the diamond look dull

"House Of Windsor Jewellers — Helping you choose diamonds that truly shine."

NO. 2

Colour -The Beauty of Purity

Color measures how colorless a diamond is. The less color a diamond has, the more rare and valuable it becomes.

Diamond Color Scale:

D E F G H I J ... Z

D–F Color

Colorless Diamonds

Most rare, bright, and expensive

G–J Color

Near Colorless

Excellent value with beautiful appearance

K–M

Faint Yellow

N–R

Very Light Yellow

S–Z

Light Yellow or Brown Tint

More visible color tones

House Of Windsor Jewellers — Guiding you to choose the perfect diamond with confidence.

NO. 3

Clarity -The Purity Inside

Clarity measures how free a diamond is from internal inclusions and external blemishes.

In diamond laboratories, clarity is carefully examined under higher magnification using a microscope. Experts check for internal inclusions and external blemishes to determine the diamond's clarity grade and purity.

FL (Flawless) & IF (Internally Flawless)

The highest clarity grades. FL diamonds have no inclusions or blemishes visible under 10x magnification. IF diamonds have no inclusions, only minor surface blemishes.

VVS1/VVS2 (Very Very Slightly Included)

Inclusions are extremely difficult to see under 10x magnification. These diamonds offer exceptional clarity at a more accessible price point.

VS1/VS2 (Very Slightly Included)

Inclusions are minor and difficult to see under 10x magnification. These diamonds provide excellent value with eye-clean appearance.

SI1/SI2 (Slightly Included)

Inclusions are noticeable under 10x magnification but often eye-clean. These diamonds offer the best value for budget-conscious buyers.

I1/I2/I3 (Included)

Inclusions are visible under 10x magnification and may sometimes be noticeable to the naked eye. These diamonds offer the most affordable option while still providing brilliance.

House Of Windsor Jewellers — Helping you choose diamonds with confidence and brilliance.

NO. 4

Carat -The Size of Beauty

Carat measures the weight of a diamond.

1 Carat = 200 Milligrams

Generally, the larger the diamond, the more rare and valuable it becomes.

However, beauty also depends on the perfect balance of:

Cut • Color • Clarity • Carat

Simple Carat Guide:

0.25ct

0.50ct

1.00ct

2.00ct

3.00ct

0.25 ct +

Small & Elegant

0.50 ct +

Classic

1.00 ct +

Craftsmanship - Where Luxury Meets Artistry

The traditional language of diamonds is built on the famous 4Cs:

Cut
Color
Clarity
Carat

These qualities define the beauty and value of every diamond. But at House Of Windsor Jewellers, we believe a truly exceptional jewel deserves something more.

That is why we introduce the 5th C — Craftsmanship

Our craftsmanship transforms every diamond into a timeless masterpiece, created with passion, precision, and artistry. Because a diamond is not only judged by its quality, but by the hands that bring it to life.

Passion

Precision

Artistry

Heritage

House Of Windsor Jewellers — Where Luxury Meets Craftsmanship ✨