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Explore Q Report's Content Centre for expert advice on jewellery insurance. You can also read e-guides and blogs, watch videos and more.

Explore Q Report's Content Centre for expert advice on jewellery insurance. You can also read e-guides and blogs, watch videos and more.

Jewellery, engagement ring & watch advice, plus insurance tips & industry insights. 

Watch expert tips, discover insurance benefits & hear real customer stories. 

Find answers to common questions about jewellery, engagement ring & watch insurance. 

Click here to access important policy documents - Product Disclosure Statement, Financial Services Guide, and Policy Wording.

Click here to access the Target Market Determination (TMD) document.

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Cost Per Carat: A Guide to Diamond Prices

Q Report Team

Updated on March 18, 2025
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You’re well-acquainted with the prices of products you buy regularly. You know if you’re getting a good deal on shoes or dinner or even a car. But when it comes to diamonds, most of us don’t know what to expect.

That’s why it’s helpful to know the factors that affect diamond prices before you start shopping. Instead of facing difficult choices or unpleasant surprises while you shop, learn what you can ahead of time so you can narrow down your options.

Shop like a pro. We’ll arm you with crucial knowledge about diamond pricing. Let’s get started.

Supply and Demand

As with any other product, supply and demand affect diamond prices, and the most popular diamond shape remains the round brilliant.

Most Expensive

The round brilliant’s popularity is hardly surprising. Cut with 57 (sometimes 58) facets, this shape reflects light like no other, making it an instant favourite with engagement ring shoppers everywhere. Because it’s in such high demand, the round brilliant is more expensive than other shapes. Additionally, this cut is more costly to produce because of higher manufacturing costs.

As you shop, expect to pay 10-20% more for a round brilliant diamond than for another cut with the same carat weight and quality.

Mid-Range

After round brilliants, the next most popular shapes include cushion, princess, radiants and Asscher cut stones. You can expect to pay less for these shapes, even though they’re perennially popular. They don’t have as many facets as round brilliants, but they each have their unique charm.

If you’re looking for a lower price per carat, consider one of the fancy cuts such as marquise, heart, oval, pear or emerald. Ovals and pears have been trending for several years. Therefore, you can find plenty of attractive settings for these shapes. If you’re hoping to squeeze a more substantial stone into your engagement ring budget, a fancy-shaped diamond is a great way to go.

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Another Factor: Colour

Shape affects a diamond’s cost per carat more than any other factor, however a diamond’s colour helps to determine its value as well. Colourless diamonds cost more per carat than diamonds with yellowish or brownish hues. If a transparent diamond ranks high on your list of priorities, expect to pay a little more. 

In reality, colour preference is a personal matter. Some people prefer the golden glow of a yellowish diamond set against yellow gold. Others love a colourless diamond, either contrasted with rose gold or complemented by white gold or platinum.

Polish and Symmetry

A stone’s polish and symmetry can increase its cost per carat as well. Polish refers to the smoothness of a diamond’s surface after cutting. An expertly polished diamond produces crisp reflections and undistorted transmissions of light. Poorly polished diamonds have a duller appearance.

Symmetry refers to exactness of shape and alignment of the individual facets. The overall outline of a diamond will appear exact when high-level symmetry has been achieved. Asymmetrical diamonds, lack brilliance due to misdirected light transmissions.

Treatments and Enhancements

Treated stones have been enhanced to diminish noticeable flaws on the surface. They cost less per carat than natural stones that haven’t been treated or enhanced. 

Treated and enhanced stones are a better match for a buyer who wants a lovely stone for a lower cost than someone looking for a natural stone that will serve as an investment or family heirloom.

Rarity

Rarity goes back to supply and demand, but let’s explore the concept a bit further. In 1990, a Brasilian farmer found a deep red diamond in the rough. It turned out to weigh an incredible 13.90 carats. The William Goldberg Diamond Corporation purchased the diamond and cut it into a brilliant triangular cut. After cutting, the diamond weighed 5.11 carats. Because of its incredibly rare cranberry red colour and it’s enormous size, this diamond, now known as the Moussaieff Red Diamond, is one of the world’s most expensive. 

But colour and size aren’t the only factors that make diamonds rare. Some diamonds are expensive because they’re found in unique and highly-coveted areas, like the Golconda mines in India. Until 1730, when diamonds were discovered in Brazil, Golconda was the only known source. Renowned for their purity and transparency, Golconda diamonds often fetch higher prices even today.

Armed with knowledge about diamonds’ cost per carat, you can evaluate your priorities and shop with purpose. Consider your preferences regarding shape, polish and symmetry, colour, treatments and enhancements, and rarity. And once you find the perfect diamond, insure it with Q Report jewellery insurance. We’ll make sure it’s protected from theft, loss and damage, no matter how far you travel.

Get a free quote for Q Report jewellery insurance, and discover how affordable it is to protect the things you love.

 

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Purchase Amount

To get an accurate insurance quote, please provide the amount from your purchase receipt.

Don't have the receipt?

If you don't have the receipt, you can provide the most recent valuation amount instead.

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Jewellery Insurance

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play-audio
Listen to article
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You’re well-acquainted with the prices of products you buy regularly. You know if you’re getting a good deal on shoes or dinner or even a car. But when it comes to diamonds, most of us don’t know what to expect.

That’s why it’s helpful to know the factors that affect diamond prices before you start shopping. Instead of facing difficult choices or unpleasant surprises while you shop, learn what you can ahead of time so you can narrow down your options.

Shop like a pro. We’ll arm you with crucial knowledge about diamond pricing. Let’s get started.

Supply and Demand

As with any other product, supply and demand affect diamond prices, and the most popular diamond shape remains the round brilliant.

Most Expensive

The round brilliant’s popularity is hardly surprising. Cut with 57 (sometimes 58) facets, this shape reflects light like no other, making it an instant favourite with engagement ring shoppers everywhere. Because it’s in such high demand, the round brilliant is more expensive than other shapes. Additionally, this cut is more costly to produce because of higher manufacturing costs.

As you shop, expect to pay 10-20% more for a round brilliant diamond than for another cut with the same carat weight and quality.

Mid-Range

After round brilliants, the next most popular shapes include cushion, princess, radiants and Asscher cut stones. You can expect to pay less for these shapes, even though they’re perennially popular. They don’t have as many facets as round brilliants, but they each have their unique charm.

If you’re looking for a lower price per carat, consider one of the fancy cuts such as marquise, heart, oval, pear or emerald. Ovals and pears have been trending for several years. Therefore, you can find plenty of attractive settings for these shapes. If you’re hoping to squeeze a more substantial stone into your engagement ring budget, a fancy-shaped diamond is a great way to go.

New call-to-action

 

Another Factor: Colour

Shape affects a diamond’s cost per carat more than any other factor, however a diamond’s colour helps to determine its value as well. Colourless diamonds cost more per carat than diamonds with yellowish or brownish hues. If a transparent diamond ranks high on your list of priorities, expect to pay a little more. 

In reality, colour preference is a personal matter. Some people prefer the golden glow of a yellowish diamond set against yellow gold. Others love a colourless diamond, either contrasted with rose gold or complemented by white gold or platinum.

Polish and Symmetry

A stone’s polish and symmetry can increase its cost per carat as well. Polish refers to the smoothness of a diamond’s surface after cutting. An expertly polished diamond produces crisp reflections and undistorted transmissions of light. Poorly polished diamonds have a duller appearance.

Symmetry refers to exactness of shape and alignment of the individual facets. The overall outline of a diamond will appear exact when high-level symmetry has been achieved. Asymmetrical diamonds, lack brilliance due to misdirected light transmissions.

Treatments and Enhancements

Treated stones have been enhanced to diminish noticeable flaws on the surface. They cost less per carat than natural stones that haven’t been treated or enhanced. 

Treated and enhanced stones are a better match for a buyer who wants a lovely stone for a lower cost than someone looking for a natural stone that will serve as an investment or family heirloom.

Rarity

Rarity goes back to supply and demand, but let’s explore the concept a bit further. In 1990, a Brasilian farmer found a deep red diamond in the rough. It turned out to weigh an incredible 13.90 carats. The William Goldberg Diamond Corporation purchased the diamond and cut it into a brilliant triangular cut. After cutting, the diamond weighed 5.11 carats. Because of its incredibly rare cranberry red colour and it’s enormous size, this diamond, now known as the Moussaieff Red Diamond, is one of the world’s most expensive. 

But colour and size aren’t the only factors that make diamonds rare. Some diamonds are expensive because they’re found in unique and highly-coveted areas, like the Golconda mines in India. Until 1730, when diamonds were discovered in Brazil, Golconda was the only known source. Renowned for their purity and transparency, Golconda diamonds often fetch higher prices even today.

Armed with knowledge about diamonds’ cost per carat, you can evaluate your priorities and shop with purpose. Consider your preferences regarding shape, polish and symmetry, colour, treatments and enhancements, and rarity. And once you find the perfect diamond, insure it with Q Report jewellery insurance. We’ll make sure it’s protected from theft, loss and damage, no matter how far you travel.

Get a free quote for Q Report jewellery insurance, and discover how affordable it is to protect the things you love.

 

Q report

Table of Contents

Introduction
Understanding the 4 Cs of Diamonds
Diamond Shapes
Choosing a Ring Style
Selecting a Ring Retailer

Understanding Mechanical Movements

Rolex-super-precision

Unlike their battery-powered quartz counterparts, luxury watches have a beating heart – the mechanical movement. First created in the 14th century, large, weight-driven tower clocks with verge escapements and foliot balances marked the dawn of mechanical timekeeping.

Today, the core concept of mechanical movements remains unchanged from its original conception. It involves an intricate arrangement of gears, springs, and an escapement powered by a wound mainspring. This precision engineering allows for smooth operation and precise timekeeping.

Manual watch movements require the wearer to wind the crown periodically. Automatic watch movements, on the other hand, utilise the wearer's movements to keep the mainspring wound, offering a convenient everyday solution.

The Patek Philippe Calatrava, with its ultra-thin manual movement, exemplifies the elegance of traditional watchmaking. On the other hand, the Rolex Oyster Perpetual, with its self-winding mechanism epitomises practicality and durability.

Whether manual or automatic, a mechanical movement imbues a luxury watch with a soul, a testament to human ingenuity and a treasured heirloom for generations to come

Luxury Watch Complications: Exploring Hidden Features & Functionality

Luxury watches often boast 'complications,' intricate mechanisms that add layers of sophistication, style and utility. Here, we explore some of the most fascinating complications created by the best luxury watch brands.

Statistic Heading

Rolex-super-precision

Unlike their battery-powered quartz counterparts, luxury watches have a beating heart – the mechanical movement. First created in the 14th century, large, weight-driven tower clocks with verge escapements and foliot balances marked the dawn of mechanical timekeeping.

Today, the core concept of mechanical movements remains unchanged from its original conception. It involves an intricate arrangement of gears, springs, and an escapement powered by a wound mainspring. This precision engineering allows for smooth operation and precise timekeeping.

Manual watch movements require the wearer to wind the crown periodically. Automatic watch movements, on the other hand, utilise the wearer's movements to keep the mainspring wound, offering a convenient everyday solution.

The Patek Philippe Calatrava, with its ultra-thin manual movement, exemplifies the elegance of traditional watchmaking. On the other hand, the Rolex Oyster Perpetual, with its self-winding mechanism epitomises practicality and durability.

Whether manual or automatic, a mechanical movement imbues a luxury watch with a soul, a testament to human ingenuity and a treasured heirloom for generations to come

Peace of Mind: An engagement ring is a significant financial and sentimental investment. Specialised engagement ring insurance provides financial protection in the event of loss, theft or damage by ensuring you can recover the ring's monetary value or repair or replace.

Peace of Mind: An engagement ring is a significant financial and sentimental investment. Specialised engagement ring insurance provides financial protection in the event of loss, theft or damage by ensuring you can recover the ring's monetary value or repair or replace.

Peace of Mind: An engagement ring is a significant financial and sentimental investment. Specialised engagement ring insurance provides financial protection in the event of loss, theft or damage by ensuring you can recover the ring's monetary value or repair or replace.

Peace of Mind: An engagement ring is a significant financial and sentimental investment. Specialised engagement ring insurance provides financial protection in the event of loss, theft or damage by ensuring you can recover the ring's monetary value or repair or replace.

Common Diamond Alternatives
for Engagement Rings

Tanzanite

Contents insurance is essential for anyone who owns valuable items, as it helps protect you should a potential loss occur in your.

Aquamarine

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Sapphire

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Luxury Watch Complications: Exploring Hidden Features & Functionality

Luxury watches often boast 'complications,' intricate mechanisms that add layers of sophistication, style and utility. Here, we explore some of the most fascinating complications created by the best luxury watch brands.

Peace of Mind: An engagement ring is a significant financial and sentimental investment. Specialised engagement ring insurance provides financial protection in the event of loss, theft or damage by ensuring you can recover the ring's monetary value or repair or replace.

Peace of Mind: An engagement ring is a significant financial and sentimental investment. Specialised engagement ring insurance provides financial protection in the event of loss, theft or damage by ensuring you can recover the ring's monetary value or repair or replace.

Peace of Mind: An engagement ring is a significant financial and sentimental investment. Specialised engagement ring insurance provides financial protection in the event of loss, theft or damage by ensuring you can recover the ring's monetary value or repair or replace.

Peace of Mind: An engagement ring is a significant financial and sentimental investment. Specialised engagement ring insurance provides financial protection in the event of loss, theft or damage by ensuring you can recover the ring's monetary value or repair or replace.

“Knowing your engagement ring is insured brings peace of mind. Accidents can happen, and insurance coverage alleviates the worry and stress of potential loss or damage.”

Unlike their battery-powered quartz counterparts, luxury watches have a beating heart – the mechanical movement. First created in the 14th century, large, weight-driven tower clocks with verge escapements and foliot balances marked the dawn of mechanical timekeeping.

Today, the core concept of mechanical movements remains unchanged from its original conception. It involves an intricate arrangement of gears, springs, and an escapement powered by a wound mainspring. This precision engineering allows for smooth operation and precise timekeeping.

Manual watch movements require the wearer to wind the crown periodically. Automatic watch movements, on the other hand, utilise the wearer's movements to keep the mainspring wound, offering a convenient everyday solution.

The Patek Philippe Calatrava, with its ultra-thin manual movement, exemplifies the elegance of traditional watchmaking. On the other hand, the Rolex Oyster Perpetual, with its self-winding mechanism epitomises practicality and durability.

Whether manual or automatic, a mechanical movement imbues a luxury watch with a soul, a testament to human ingenuity and a treasured heirloom for generations to come

Export
Expert Tip

Budget Considerations

Diamond shapes can vary in price due to popularity and demand. Round brilliants, for example, tend to be more expensive than other shapes due to their high demand. If budget is a concern, consider alternative shapes or prioritise other aspects, such as cut quality, over the shape itself.

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Jewellery Insurance FAQ

Contents insurance covers the items within your home in case they are damaged, lost or stolen. This can include furniture, electronics, clothing and other personal.  Contents insurance is essential for anyone who owns valuable items, as it helps protect you should a potential loss occur in your.

Contents insurance covers the items within your home in case they are damaged, lost or stolen. This can include furniture, electronics, clothing and other personal.  Contents insurance is essential for anyone who owns valuable items, as it helps protect you should a potential loss occur in your.
Home Security Fortification

An engagement ring is a significant financial and sentimental investment. Specialised engagement ring insurance provides financial protection in the event of loss, theft or damage by ensuring you can recover the ring's monetary value or repair or replace.

An engagement ring is a significant financial and sentimental investment. Specialised.

Travel Savvy

An engagement ring is a significant financial and sentimental investment. Specialised engagement ring insurance provides financial protection in the event of loss, theft or damage by ensuring you can recover the ring's monetary value or repair or replace.

An engagement ring is a significant financial and sentimental investment. Specialised.

Social Media Caution

An engagement ring is a significant financial and sentimental investment. Specialised engagement ring insurance provides financial protection in the event of loss, theft or damage by ensuring you can recover the ring's monetary value or repair or replace.

An engagement ring is a significant financial and sentimental investment. Specialised.

Regular Valuations

An engagement ring is a significant financial and sentimental investment. Specialised engagement ring insurance provides financial protection in the event of loss, theft or damage by ensuring you can recover the ring's monetary value or repair or replace.

An engagement ring is a significant financial and sentimental investment. Specialised.

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Contents insurance is essential for anyone who owns valuable items, as it helps protect you should a potential loss occur in your.

Luxury Watch Complications: Exploring Hidden Features & Functionality

Luxury watches often boast 'complications,' intricate mechanisms that add layers of sophistication, style and utility. Here, we explore some of the most fascinating complications created by the best luxury watch brands.

Home Security Fortification

Contents insurance covers the items within your home in case they are damaged, lost or stolen. This can include furniture, electronics, clothing and other personal.  Contents insurance is essential for anyone who owns valuable items, as it helps protect you should a potential loss occur in your.

Purchase Amount

To get an accurate insurance quote, please provide the amount from your purchase receipt.

Don't have the receipt?

If you don't have the receipt, you can provide the most recent valuation amount instead.

OK

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