Delving into Diamonds - The 5 C's | Phillip Stoner The Jeweller (2023)

A combination of The 4C’s; Cut, Carat, Colour and Clarity determines a Diamond’s rarity and value.

The 5th C, Certificate gives you peace of mind, knowing that the Diamond you are buying has been independently assessed and graded.

Items found on our website and in our stores only feature natural diamonds, however Lab Grown Diamonds can be sourced on request.

1. Cut

In their natural state, diamonds are ‘rough’ and bear little resemblance to the sparkling gemstones we’re all familiar with. It takes a lot of time and skill to transform them into the beautiful diamonds that we set in our jewellery.

How well a diamond has been cut (Proportions, Polish and Symmetry) determines how well light can refract through the stone and in turn, how much it will sparkle.

Cut can also refer to the shape of the diamond.

Delving into Diamonds - The 5 C's | Phillip Stoner The Jeweller (1)

2. Colour

The less colour a white diamond has, the higher it is graded. The slightest hint of yellow or grey can make a dramatic difference to a diamond’s value.

Exceptions to this are Fancy Coloured Diamonds which can be Yellow, Pink or Blue and are prized for the intensity of their colour.

Delving into Diamonds - The 5 C's | Phillip Stoner The Jeweller (2)

3. Clarity

Clarity refers to the number, size and position of any inclusions or blemishes within the diamond. These natural characteristics are, on the diamonds we select, very difficult to see with the naked eye.

Flawless diamonds are incredibly rare, which is reflected in their price.

Delving into Diamonds - The 5 C's | Phillip Stoner The Jeweller (3)

4. Carat

The Carat Weight determines the size of the Diamond. Because of their rarity, bigger diamonds would be more expensive than a smaller diamond of the same quality.

Delving into Diamonds - The 5 C's | Phillip Stoner The Jeweller (4)

5. Certificate

The diamonds we use in our Engagement Rings have been independently graded andcertificated by arecognised independent gemological institute.

We tend to use The Gemological Institute of America (GIA), International Gemological Institute (IGI) or Anchor (Birmingham Assay Office) who are renowned for their strict assessments.

Delving into Diamonds - The 5 C's | Phillip Stoner The Jeweller (5)


Phillip Stoner acquires diamonds through The Kimberley Process, an international certification scheme for rough diamonds, which guarantees that every stone we purchase is from a conflict-free zone.

The Kimberley Process is a joint government, industry and civil society initiative to stem the flow of conflict diamonds; ensuring that diamond purchases are not financing violence by rebel movements and their allies seeking to undermine legitimate governments. It has also helped stabilise fragile countries and supported their development.

The Kimberley Process is open to all countries that are willing and able to implement its requirements. Members account for approximately 99.8% of the global production of rough diamonds.

Top Articles
Latest Posts
Article information

Author: Rubie Ullrich

Last Updated: 22/07/2023

Views: 5871

Rating: 4.1 / 5 (72 voted)

Reviews: 95% of readers found this page helpful

Author information

Name: Rubie Ullrich

Birthday: 1998-02-02

Address: 743 Stoltenberg Center, Genovevaville, NJ 59925-3119

Phone: +2202978377583

Job: Administration Engineer

Hobby: Surfing, Sailing, Listening to music, Web surfing, Kitesurfing, Geocaching, Backpacking

Introduction: My name is Rubie Ullrich, I am a enthusiastic, perfect, tender, vivacious, talented, famous, delightful person who loves writing and wants to share my knowledge and understanding with you.