
1 carat diamonds
Perfectly balanced for everyday elegance or special occasions, each piece in our 1 to 2 carats lab grown diamond collection offers exceptional brilliance and outstanding value.
Quick guide to 1 carat diamond rings
Diamond Academy - Learn all about diamonds before you buy
Looking for the perfect 1 carat diamond ring? Learn everything about size, value, and why 1 carat diamonds are perfect choice for engagement rings and diamond earrings.
If you're shopping for a diamond ring or earrings, chances are you’ve come across the 1 carat diamond. It’s a classic choice—elegant, eye-catching, and just the right size for many styles and budgets. But what exactly does 1 carat mean, and why are lab-grown 1 carat diamonds so popular in Singapore and globally?
What Does “1 Carat” Really Mean?
A carat is a unit of weight used to measure diamonds and other gemstones. One carat is equal to 200 milligrams. But here’s the key: carat weight isn’t the same as size. The way a diamond is cut can affect how large or small it appears.
For example, a 1 carat round brilliant cut diamond typically measures about 6.4–6.5mm in diameter. Other shapes, like ovals or pears, can look bigger even at the same carat weight.
Here’s a rough size guide for different cuts:
- Round: ~6.4 mm
- Oval: ~8 x 5.5 mm
- Emerald: ~6.5 x 5 mm
- Cushion: ~5.5 x 5.5 mm
- Princess: ~5.5 x 5.5 mm
- Pear: ~8.5 x 5.5 mm
So if you're asking, "How big is a 1 carat diamond?", it depends on the cut. But generally across all shapes, it's considered a perfect balance between presence and practicality.
Whether you’re buying for an engagement, anniversary, or personal milestone, a 1 carat diamond ring is a meaningful choice.
What is better: a 1 carat or 2 carat diamond?
For those seeking a traditional option, a 1 carat diamond is ideal. However, if you desire a larger and bolder appearance, a 2 carat lab grown diamond, appearing up to 50% larger, may be a perfect choice.
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Testimonials
Hear from our customers
Emily & Marcus
We couldn’t be happier with our decision to choose a lab grown diamond for our engagement ring! Not only is it absolutely stunning, but knowing it’s more environmentally friendly makes it even more special. The workmanship by Carat Heritage is incredible, and it’s the perfect symbol of our everlasting commitment to each other.
Olivia & James
I was a little hesitant at first, but after learning more about lab grown diamonds, I knew it was the right choice for us. The ring is absolutely perfect—brilliant, beautiful, and meaningful. I love how it looks and I have received so many compliments on its sparkle!
Sarah & Jo
The team was incredibly knowledgeable and helped us understand the benefits of lab-grown diamonds. Our engagement ring is gorgeous and goes so well with my wedding band. We get so many compliments on it, and we couldn’t be prouder of our choice.
Ava & Ethan
I never imagined I’d find an engagement ring that checks all the boxes—stunning, affordable, and ethical. Our oval diamond solitaire ring is everything we wanted, and more. The customer service was incredible, and the ring exceeded all our expectations.