Table of Contents

  • Introduction
  • What is the Mohs scale and why is it important when choosing a coloured stone? 
  • Overview of the Mohs scale
  • Let's look at some advantages for choosing a coloured gemstone over diamonds
  • Uniqueness 
  • Meaning and Symbolism
  • Budget-Friendly Options
  • Durability
  • Considerations
  • Why is it important to choose a coloured stone that is durable?
  • Gemstones that Morgan & Co do not recommend for engagement rings
  • What Gemstones are more porous or have treatments that can be affected by water?
  • What gemstones we consider perfect for your engagement ring?
  • Mixing diamonds and gemstones to create a stunning engagement ring
  • Conclusion 
  • Frequently Asked Questions (FAQs)


Engagement rings, traditionally adorned with diamonds, have long stood as a symbol of everlasting love and commitment. However, as love stories evolve, so do the preferences of modern couples seeking to infuse their unions with unique character and personal flair. In the world of engagement rings, coloured gemstones have emerged as captivating alternatives, offering a vibrant spectrum of possibilities that transcend conventional norms.

Join us on an enchanting journey as we delve into the allure of coloured gemstones, exploring their significance, breathtaking varieties, and the growing trend of incorporating these vibrant gems into engagement rings. Discover how these radiant stones lend a touch of individuality and meaning, elevating the tradition of proposals to new heights of elegance and distinction.

What is the Mohs scale and why is it  important when choosing a coloured stone? 

The Mohs scale of mineral hardness is a method used to measure the relative hardness of minerals or gemstones. It was developed by Friedrich Mohs, a German mineralogist, in 1812. The scale ranks minerals on a scale of 1 to 10 based on their scratch resistance against other minerals.

M&Co Website reviews (1000 x 1200 px)-2 (1).jpg__PID:6da22175-e928-47a2-a3f3-2c947e61cc93

Overview of the Mohs Scale

Diamonds, being the hardest gemstone on the Mohs scale, are a popular choice for engagement rings due to their exceptional durability and brilliance. Sapphires, especially blue sapphires, are also a favoured choice for engagement rings because of their hardness and range of colours available.

While softer gemstones like opals, pearls, and some coloured stones can be stunning, they might not be as suitable for everyday wear in an engagement ring due to their lower hardness and susceptibility to scratches or damage.

Ultimately, considering the Mohs scale when choosing a stone for an engagement ring helps ensure the durability and longevity of the piece, maintaining its beauty and sentimental value for years to come.

Let's look at some advantages for choosing a coloured gemstone over diamonds


Coloured gemstones offer a wide range of hues, from vibrant blues (sapphires) and lush greens (emeralds) to deep reds (rubies) and various other colours like morganite, aquamarine, or amethyst. They can create a distinct and personalised ring that stands out. Morgan & Co are experts in all things coloured.

Meaning and Symbolism

Different coloured gemstones carry unique meanings and symbolism. For instance, rubies symbolise love and passion, while sapphires can represent loyalty and trust. Choosing a coloured gemstone based on its significance can add depth to the engagement ring's meaning.

Budget-Friendly Options

Some coloured gemstones can offer larger sizes or better quality at a lower cost compared to diamonds. This allows for more flexibility in terms of size, quality, and design within a specific budget.


Certain coloured gemstones, like sapphires and rubies, are durable and suitable for everyday wear. They score high on the Mohs scale of hardness, making them resilient for long-term use.

There are many things that need to be taken into consideration if one decides to choose a coloured gemstone for an engagement ring. Morgan & Co educates their clients on the pros and cons when considering coloured stones, there are some considerations to take note.


Durability and Maintenance

While some coloured gemstones are durable, others might be more prone to scratching or chipping, especially if worn daily. Assessing the gem's hardness and understanding its maintenance needs is crucial.

Colour Preference

Coloured gemstones have a personal appeal, but preferences vary. Morgan & Co spend time sourcing the right colour, hue, size and shape that is specified by their clients. At Morgan & Co, we have a vast array of gemstone suppliers that are renowned and trusted within the jewellery industry. Contact the Bespoke team here to book your consultation.

Long-Term Wear

An engagement ring is typically worn daily for years. Consideration is made about how well a coloured gemstone will align with the wearer's lifestyle and if it will stand the test of time.

Book your free consultation to view coloured gemstones and designs at Morgan & Co's Buderim studio. 

Why is it important to choose a coloured stone that is durable? 

Durability and Longevity

Engagement rings are worn daily, subjected to daily wear and tear. Hard gemstones like diamonds, sapphires, and rubies are more resistant to scratches, chips, and abrasions, ensuring the ring maintains its beauty and value over time.

Everyday Wear

Engagement rings are typically worn daily, often during various activities. Harder gemstones can withstand the rigours of everyday wear better than softer stones, preserving their appearance for years to come.

Maintenance and Care

Harder gemstones generally require less maintenance and care compared to softer stones. They are less prone to damage during cleaning or accidental impacts.

Versatility in Design

Harder gemstones offer versatility in design. They can be set in various settings and styles without as much concern for their vulnerability to damage during setting or resizing.

Book your free consultation to view coloured gemstones and designs at Morgan & Co's Buderim studio. 

Gemstones that Morgan & Co do not recommend for engagement rings

At Morgan & Co, we consider educating our clients about all things gemstones very important, this is because certain gemstones are more susceptible to damage or alteration when exposed to water or moisture. It is important that our clients understand that while many gemstones can withstand occasional exposure to water, some are prone to damage if consistently submerged or exposed to prolonged moisture. Contact our team for your free consultation at our Buderim studio. 

Gemstones that are more porous or have treatments that can be affected by water include:


Opals are relatively porous and can absorb water, which may lead to changes in their appearance or cause them to crack if exposed to frequent moisture.


Pearls are organic gemstones formed inside oysters and are sensitive to moisture. Prolonged exposure to water can dull their lustre and cause damage to their surface.


Turquoise is a porous gemstone that can absorb liquids, potentially altering its colour or causing surface damage if regularly exposed to water.

Lapis Lazuli

Lapis Lazuli, although fairly durable, can be affected by prolonged exposure to water, leading to potential discolouration or surface changes.


Malachite is sensitive to moisture, and consistent exposure to water may cause surface damage or alterations to its appearance.

What gemstones do we consider perfect for your engagement ring?

We believe that gemstones for engagement rings should balance durability, beauty, and significance. While diamonds are a traditional choice due to their exceptional hardness and brilliance, several other gemstones are also well-suited for engagement rings. Here are some of our recommendations. View our range of coloured rings here


Sapphires, particularly blue sapphires, are highly durable (ranking 9 on the Mohs scale) and come in a range of colours. They're a popular alternative to diamonds and symbolise sincerity and faithfulness. 


Rubies, like sapphires, are a type of corundum and rank 9 on the Mohs scale. They are known for their vibrant red colour and symbolises passion and love. The Laurel Ring is a Morgan & Co design and features a stunning ruby. 


While emeralds are stunning, they are softer than sapphires and diamonds (ranking around 7.5-8 on the Mohs scale), so they require more care. However, they are admired for their rich green colour and signify hope and renewal. Emeralds are low on our to go to list for engagement rings, every care needs to be taken if this is the gemstone you would like in your ring.

Book your free consultation to view coloured gemstones and designs at Morgan & Co's Buderim studio. 


Aquamarine, with a ranking of 7.5-8 on the Mohs scale, is a lovely blue gemstone that symbolises courage and harmony. It's durable enough for everyday wear but may need more care than sapphires or rubies.


Morganite is a peachy-pink variety of beryl (same family as emeralds) with a hardness of 7.5-8 on the Mohs scale. It's a feminine and elegant choice, although it requires more care due to its moderate hardness.

When choosing a gemstone for an engagement ring, consider your preferences, lifestyle, and the gemstone's durability. While diamonds remain a classic choice, the durability and meaning behind these alternative gemstones make them excellent options for engagement rings, allowing for a unique and personalised symbol of love and commitment.

Mixing diamonds and gemstones 

Mixing diamonds with coloured gemstones in an engagement ring can create a stunning and unique piece of jewellery. It allows for personalisation, adds depth to the design, and can symbolise various aspects of the relationship.

Our designers love to create rings that  mix diamonds with coloured gemstones in an engagement ring. Here are some ideas that have been popular in recent years. 

Side Stones

Incorporating coloured gemstones as side stones or accents around a central diamond can enhance the ring's aesthetic appeal. For instance, using sapphires, rubies, emeralds or coloured diamonds as side stones alongside a diamond centre stone creates a vibrant and eye-catching design.

Halo Setting

A halo of coloured gemstones surrounding a central diamond can add a pop of colour and create a dazzling contrast. This design choice amplifies the brilliance of the central diamond while introducing a touch of personalisation.

Alternating Stones

 Designing a ring with alternating diamonds and coloured gemstones along the band or in intricate patterns offers a unique and dynamic look. This approach showcases both the sparkle of diamonds and the vivid hues of the coloured stones.

Three-Stone Rings

 Creating a three-stone engagement ring with a central diamond flanked by two coloured gemstones is symbolic and visually appealing. This arrangement can represent the past, present, and future or convey other meaningful messages.

Contrasting Settings

Combining diamonds and coloured gemstones in different settings, such as a pavé setting for diamonds and a bezel setting for coloured gemstones, creates a visually interesting contrast.

The key to successfully mixing diamonds with coloured gemstones in an engagement ring is achieving balance and harmony in the design. We consider factors like colour combinations, proportions, and the overall aesthetic to ensure that both elements complement each other, creating a cohesive and beautiful ring that holds significance for the wearer.


Ultimately, choosing a coloured gemstone for an engagement ring is a matter of personal style and preference. Many people find the uniqueness and symbolism of coloured gemstones appealing, while others prefer the classic beauty and durability of diamonds. It's important to weigh the pros and cons, consider the wearer's taste and lifestyle, and make a choice that holds sentimental value for both partners.

Book your free consultation to view coloured gemstones and designs at Morgan & Co's Buderim studio. 

Frequently Asked Questions (FAQs)

1. Are coloured gemstones suitable for engagement rings? Yes, coloured gemstones are suitable for engagement rings. Many gemstones, such as sapphires, rubies, emeralds, and morganites, are durable enough for everyday wear and can withstand the rigours of daily life.

2. Which coloured gemstones are popular choices for engagement rings? Sapphires in various colours (blue, pink, yellow), rubies, emeralds, morganites, aquamarines, and tourmalines are among the popular choices due to their durability, brilliance, and availability in a range of hues.

3. What colours do coloured gemstones come in for engagement rings? Coloured gemstones come in a wide array of hues. For instance, sapphires can be found in blue, pink, yellow, and more. Rubies are known for their vibrant reds, while emeralds display rich green tones. Other gemstones offer a spectrum of colours, providing ample choices.

4. How do I choose the right coloured gemstone for an engagement ring? Consider factors like the recipient's favourite colour, the meaning behind certain gemstones, their durability (measured on the Mohs scale), and personal style preferences when choosing a coloured gemstone for an engagement ring.

5. Are coloured gemstones less durable than diamonds for daily wear? While coloured gemstones may vary in durability, many can endure daily wear. Some gemstones, like sapphires and rubies, rank high on the Mohs scale of hardness, making them suitable for everyday use.

6. Can coloured gemstones be customised for engagement rings? Yes, coloured gemstones can be customised in various shapes, cuts, and settings to suit individual preferences. Customisation offers the opportunity to create a unique and personalised engagement ring.

7. Do coloured gemstones have any symbolic meanings for engagements? Certain coloured gemstones are associated with symbolic meanings. For instance, sapphires symbolise loyalty and fidelity, while rubies often represent love and passion. Emeralds are associated with hope and new beginnings.

8. How do I care for a coloured gemstone engagement ring? Regular cleaning with mild soap and water, avoiding harsh chemicals or extreme temperature changes, and periodic professional inspections are recommended to maintain the brilliance and durability of coloured gemstone engagement rings.

November 30, 2023 — Morgan Gaskin