The True Price of a 1 Carat Diamond: What to Know Before You Buy in Singapore

So, you’re on the hunt for a 1-carat diamond?
Great choice! The 1-carat mark is not only iconic but strikes that perfect balance between size and sophistication.
But what makes one diamond worth a small fortune while another, seemingly similar, costs much less?
Let’s explore the essentials of diamond pricing, how you can find the right diamond for your budget, and some answers to common 1-carat diamond FAQs.

What Really Determines a Diamond’s Value?

Not all diamonds are created equal! When you’re looking at diamonds, you’ll often hear about the “Four Cs”—Carat, Cut, Color, and Clarity. Here’s how each plays into the price:

• Carat:
  This is the diamond’s weight. It’s easy to assume a bigger carat means better, but that's not always true! A 1-carat diamond with a perfect cut can dazzle just as much as a larger one.
• Cut:
  This is what gives a diamond its sparkle. A well-cut diamond reflects light beautifully, making it appear even larger and more radiant. Diamonds with an “Excellent” or “Ideal” cut are priced higher because they shine the most.
• Color:
  Diamonds range from colorless (D) to yellowish (Z). The clearer the diamond, the rarer and more valuable it is. In Singapore, G–H is popular for value, but at ALUXE you can get D–F color at the same or even better price thanks to transparent top-tier sourcing.
  
• Clarity:
  Clarity refers to natural inclusions. Most are invisible to the eye, but diamonds with fewer inclusions are priced higher.
  

Think of the 4Cs as a balancing act—lower one slightly, raise another, and you can still get a stunning diamond within budget.

Understanding Diamond Fluorescence and Its Impact on Price

Diamond fluorescence refers to a diamond's reaction to UV light, sometimes causing a blue glow. While it doesn’t always affect beauty, it can slightly reduce value depending on intensity.
At ALUXE, we only offer diamonds with no fluorescence to ensure maximum brilliance and clarity.

The Impact of Diamond Shape on Price

A diamond’s shape greatly affects its price and appearance.
Round diamonds cost more because they require more precision and cutting loss.
Fancy shapes (oval, pear, marquise, heart) may be more affordable and can appear larger visually.

Key Points on Shape & Size

• Diameter of a 1-carat diamond varies by shape.
• Oval and marquise look larger because of elongated shapes.
• Choose a shape that fits both style and visual size preference.

The Influence of Color on Fancy Colored Diamond Prices

Fancy colored diamonds are priced based on hue, tone, and saturation—not the D–Z scale. The more vivid the color, the more valuable the stone. Rare colors like red, green, or vivid blue can reach extraordinary prices.
At ALUXE, we offer a curated selection of high-quality fancy colored diamonds.

So, How Much Does a 1-Carat Diamond Cost in Singapore?

A 1-carat diamond in Singapore typically ranges from SGD 6,000 to SGD 20,000+. This depends on the 4Cs, shape, and certification (GIA or IGI). You can use the ALUXE Diamond Price Check System to compare prices instantly.

How to Navigate Diamond Prices (Using ALUXE’s Price Check Tool)

ALUXE’s tool lets you filter by carat, color, clarity, and cut, helping you see how each factor affects the price. Updated in real time, it gives you full control of your diamond selection.

How to Use the ALUXE Diamond Price Check System

1. Visit the ALUXE Diamond Price Page

Go to the ALUXE Diamond Price page.

2. Start with Carat Weight

Select 1 carat or your preferred weight.

3. Adjust the 4Cs Filters

• Clarity: Choose based on visual preference.
• Color: Select your desired range.
• Cut: ALUXE offers only top-tier 3EX or higher cuts.
• Carat: Ensure your desired weight is locked.

4. View Results and Compare Prices

Check how each combination affects pricing.

5. Select a Diamond to See Details

View certification, specs, and video if available.

6. Explore Customisation Options

Choose a ring setting or build your own engagement ring.

7. Consult an ALUXE Specialist

Book an appointment for assistance from ALUXE experts.

1.00 Carat, GIA Natural Diamond Reference Prices

1.00 Carat, IGI Lab-Grown Diamond Reference Prices

Common Questions About 1-Carat Diamonds

Q: Can I choose any ring design for a 1-carat diamond?

Yes! A 1-carat diamond fits nearly any design—from solitaire to halo settings. ALUXE consultants can help match the design to your diamond.

Q: How long does a custom ring take?

Custom rings take around 8–12 weeks depending on complexity. ALUXE ensures every piece is crafted perfectly.

Q: Any insider tips for better value?

Balance the 4Cs. Choosing E–F color or VVS1 clarity can give great beauty at a lower price than D/IF grades.

Ready to Find Your Perfect Diamond?

Buying a diamond is more than a purchase—it's an experience.
With ALUXE’s Price Check System, you can make informed decisions and discover the perfect 1-carat diamond.
Visit ALUXE Singapore to explore our selection and find your dream diamond today!