Understanding Natural Diamonds: Formation, Rarity & Value

Understanding Natural Diamonds: Formation, Rarity & Value
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In this guide, we explore how natural diamonds are formed, what makes them rare, and how their value is determined. Whether you’re choosing an engagement ring or simply want to understand their timeless appeal, this article will help you appreciate the true beauty and significance of natural diamonds.

Diamond ring held by a hand against a neutral background

How are Natural Diamonds Formed?

Natural diamonds are formed deep within the Earth over billions of years, when carbon is exposed to extreme heat and pressure. Volcanic eruptions bring them closer to the surface, where they are mined and cut into gemstones.

Each stone is one-of-a-kind, with unique growth patterns that reflect its natural journey. Their rarity, durability, and brilliance make natural diamonds some of the most valuable and treasured gemstones in the world.

Why Natural Diamonds Hold Timeless Value

Natural diamonds are formed over billions of years under intense heat and pressure deep within the Earth’s mantle. This natural process creates a gemstone that is extremely rare, durable, and unique. Because they are limited in supply, natural diamonds carry long-term value and are often seen as both a symbol of luxury and a lasting investment.



The Investment Benefits of Natural Diamonds
Unlike many luxury items, natural diamonds are finite and rare, which means their value can be preserved and even increase over time. With consistent demand, they remain a valuable asset that is often worth more decades later than at the time of purchase.

  • Are natural diamond prices going up or down?
    Prices fluctuate depending on global supply and demand, but historically, natural diamonds have proven to hold their value better than most luxury goods.


Do natural diamonds hold value?
Natural diamonds are formed over billions of years under intense heat and pressure deep within the Earth’s mantle. This natural process creates a gemstone that is extremely rare, durable, and unique. Because they are limited in supply and cannot be replicated, natural diamonds carry long-term value and are often seen as both a symbol of luxury and a lasting investment.


The Durability of Natural Diamonds
Natural diamonds are created under extreme heat and pressure, making them one of the hardest natural substances on Earth. This strength means they remain as stunning as the day you first received them, requiring only minimal care.

  • Can natural diamonds break?
    Diamonds are incredibly durable (10 on the Mohs scale) and resistant to scratches, but they can chip if struck at the right angle. With proper care, they truly last forever.

  • What does “natural diamond” mean?
    A natural diamond is a diamond formed entirely by nature over billions of years, without human intervention. Each stone is completely unique, unlike lab-created diamonds which are made in a laboratory.


Natural Diamonds: The Perfect Gift for Every Occasion
There is no better way to celebrate milestones, achievements, and life’s most significant moments than with a natural diamond. Whether it’s for an engagement, a wedding, an anniversary, or simply to commemorate a special achievement, a natural diamond from Arezzo Jewellers is a gift that will be treasured for a lifetime.


Unlike other luxury gifts natural diamond curries both emotional and enduring value, making it a treasure that can be cherished for a lifetime and passed down through generations.

The Diamond Buying Experience

Choosing a diamond is a significant decision, and at Arezzo Jewellers, we aim to make that process as enjoyable and transparent as possible. Our expert team is here to guide you through every step, from selecting the perfect diamond to designing your dream piece.

The 4 Cs of Diamonds: Cut, Clarity, Color, and Carat Weight
We educate our customers on the essential factors that determine the quality and value of a diamond:

Cut: The way a diamond is shaped and faceted affects its brilliance and overall aesthetic. We ensure each diamond in our collection is expertly cut to maximize its beauty.


Clarity: Natural diamonds may have internal or external imperfections known as inclusions or blemishes. We offer diamonds with a range of clarity grades, from flawless to those with minor inclusions, at various price points.

Colour: Natural diamonds come in various shades, with the most valuable diamonds being colourless or near-colourless. We offer diamonds with a range of colour grades to match your preferences and budget.


Carat Weight: Carat refers to the size of the diamond. We offer diamonds in a wide range of carat weights, so you can find the perfect balance between size, quality, and budget.

Explore Our Diamond Shapes Guide

Discover how each diamond shape captures light differently — from the classic Round Brilliant to the bold Emerald and romantic Cushion cut. Learn which shape best reflects your style and personality.

Explore the Guide