Gemstone Guide

Understanding Natural Gemstones

At Akihiro Gems, we believe that an informed client makes the most meaningful choice.
This guide is designed to help you understand natural gemstones, their qualities and what truly defines their value.

 

Every gemstone is unique shaped by nature, time and geological conditions which is why we operate on a consultation and quotation basis rather than fixed pricing.

🌈 What Is a Natural Gemstone?

A natural gemstone is a mineral or organic material formed naturally within the earth, without artificial creation. These stones may be cut and polished but are not man-made.

Examples include:

  • Sapphire

  • Ruby

  • Emerald

  • Spinel

  • Garnet

  • Tourmaline

 

Natural gemstones often display subtle inclusions, colour variations, and internal characteristics that confirm their authenticity.

🔍 The 4 Key Factors That Determine Gemstone Value

1️⃣ Colour

Colour is one of the most important value factors.
It includes:

  • Hue (the actual colour)

  • Tone (light to dark)

  • Saturation (intensity and purity)

In many gemstones, richer and well-balanced colours are more desirable.


2️⃣ Clarity

Clarity refers to internal features known as inclusions.

  • Most natural gemstones contain inclusions

  • Fewer or less visible inclusions usually increase value

  • Some inclusions help prove the stone’s natural origin

Each gemstone must be assessed individually.


3️⃣ Cut

The cut determines how well a gemstone reflects light and displays brilliance.

Common cuts include:

  • Oval

  • Cushion

  • Round

  • Emerald cut

  • Pear

  • Custom cuts

A well-executed cut enhances beauty, regardless of stone size.


4️⃣ Carat Weight

Carat refers to weight, not size.

  • Larger gemstones are rarer

  • Price does not increase linearly

  • Two stones of equal carat can vary greatly in value depending on quality

 

This is why we avoid fixed pricing.

🔥 Gemstone Treatments – What You Should Know

Some gemstones undergo treatments to improve appearance or durability.

Common treatments include:

  • Heat treatment

  • Oil or resin filling

  • Surface enhancement

 

At Akihiro Gems, we believe in full transparency.
Any known treatment is clearly disclosed during consultation and documentation.

📜 Certification & Documentation

Certification provides confidence and clarity.

Depending on the gemstone, we can supply:

  • Weight (carat)

  • Dimensions (mm)

  • Colour and clarity description

  • Treatment status

  • Origin information (when applicable)

 

Independent laboratory certification can be arranged upon request.

🌍 Ethical Sourcing Matters

Our gemstones are sourced through trusted partners in Sri Lanka, a country renowned for its gemstone heritage.

We prioritise:

  • Ethical sourcing practices

  • Long-term supplier relationships

  • Responsible trading standards

Each stone is selected with care, integrity, and respect for its origin.

💬 Consultation-Based Selection

Because gemstones vary by:

  • Size

  • Colour

  • Clarity

  • Cut

  • Treatment

We invite clients to enquire directly for personalised recommendations and quotations.

This allows us to guide you toward the gemstone that best suits your vision, purpose, and budget.

📩 Enquire with Confidence

If you would like assistance selecting a gemstone or learning more about our collections:

We are happy to assist you with expert guidance and transparent information.