Everything You Need to Know About 1 Carat Diamonds (Lab Grown Edition)
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?
In this guide, we’ll walk you through the essentials of 1 carat diamonds, especially if you’re considering a lab-grown option.
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.
How Big Is a 1 Carat Diamond?
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.
For reference, these are the sizes of 2 carat diamonds:
Why Choose a Lab Grown 1 Carat Diamond?
A lab grown diamond is chemically and visually identical to a natural mined diamond—but without the environmental or ethical concerns. And here’s the good news: for the same budget, you can often afford a higher quality or larger lab grown diamond.
Benefits of lab grown 1 carat diamonds:
- More affordable – up to 30–50% less than natural mined diamonds
- More environmentally friendly
- Guaranteed conflict-free
- Visually, physically and chemically identical to natural mined diamonds
1 Carat Diamond Price in Singapore
Prices for lab grown 1 carat diamonds in Singapore can vary based on quality, cut, colour, and clarity. On average:
- Lab grown 1 carat diamond: SGD $1,200 – $3,500
- Natural mined 1 carat diamond: SGD $4,000 – $10,000+
This means you can get a stunning, high-quality diamond ring without overstretching your budget.
Best Settings for 1 Carat Diamond Rings
1 carat diamonds are versatile—they suit almost any setting. Popular styles include:
- Solitaire: Clean, classic, timeless
- Halo: Adds extra sparkle and makes the diamond look bigger
- Pavé band: Delicate, modern shimmer
- Three-stone: Symbolic and balanced
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.
Final Thoughts: Is a 1 Carat Lab Diamond Worth It?
Absolutely. A 1 carat lab grown diamond offers incredible value, beauty, and peace of mind. You get the same sparkle and prestige as a mined diamond—without the high markups or environmental cost.
At Carat Heritage, we specialise in premium lab grown diamonds that are responsibly made and exquisitely crafted. Explore our curated selection of 1 carat diamond rings and earrings today—and find a piece that’s as brilliant as your love.
