钻石尺寸表

圆形钻石的屏幕实际尺寸

round
oval
princess
cushion
emerald
radiant
asscher
marquise
heart
pear

列表显示为：

图示

表格

校准您的屏幕以显示真实尺寸图示——点击此处

0.03 carat

⌀ 2 mm

0.006g

0.05 carat

⌀ 2.4 mm

0.01g

0.07 carat

⌀ 2.7 mm

0.014g

0.10 carat

⌀ 3 mm

0.02g

0.15 carat

⌀ 3.5 mm

0.03g

0.20 carat

⌀ 3.8 mm

0.04g

0.25 carat

⌀ 4.1 mm

0.05g

0.33 carat

⌀ 4.5 mm

0.066g

0.40 carat

⌀ 4.8 mm

0.08g

0.50 carat

⌀ 5.2 mm

0.1g

0.65 carat

⌀ 5.7 mm

0.13g

0.75 carat

⌀ 5.9 mm

0.15g

0.85 carat

⌀ 6.2 mm

0.17g

1.00 carat

⌀ 6.5 mm

0.2g

1.25 carat

⌀ 7 mm

0.25g

1.50 carat

⌀ 7.5 mm

0.3g

1.75 carat

⌀ 7.9 mm

0.35g

2.00 carat

⌀ 8.2 mm

0.4g

2.25 carat

⌀ 8.5 mm

0.45g

2.50 carat

⌀ 8.9 mm

0.5g

3.00 carat

⌀ 9.4 mm

0.6g

4.00 carat

⌀ 10.4 mm

0.8g

5.00 carat

⌀ 11.2 mm

6.00 carat

⌀ 11.9 mm

1.2g

7.00 carat

⌀ 12.5 mm

1.4g

8.00 carat

⌀ 13 mm

1.6g

10.00 carat

⌀ 14.1 mm

15.00 carat

⌀ 16.1 mm

20.00 carat

⌀ 17.7 mm

Round Diamond Sizes

Round Carat Weight	Round MM Size	Round Grams Weight
0.03 ct.	⌀ 2 mm	0.006g
0.05 ct.	⌀ 2.4 mm	0.01g
0.07 ct.	⌀ 2.7 mm	0.014g
0.1 ct.	⌀ 3 mm	0.02g
0.15 ct.	⌀ 3.5 mm	0.03g
0.2 ct.	⌀ 3.8 mm	0.04g
0.25 ct.	⌀ 4.1 mm	0.05g
0.33 ct.	⌀ 4.5 mm	0.066g
0.4 ct.	⌀ 4.8 mm	0.08g
0.5 ct.	⌀ 5.2 mm	0.1g
0.65 ct.	⌀ 5.7 mm	0.13g
0.75 ct.	⌀ 5.9 mm	0.15g
0.85 ct.	⌀ 6.2 mm	0.17g
1 ct.	⌀ 6.5 mm	0.2g
1.25 ct.	⌀ 7 mm	0.25g

Round Carat Weight	Round MM Size	Round Grams Weight
1.5 ct.	⌀ 7.5 mm	0.3g
1.75 ct.	⌀ 7.9 mm	0.35g
2 ct.	⌀ 8.2 mm	0.4g
2.25 ct.	⌀ 8.5 mm	0.45g
2.5 ct.	⌀ 8.9 mm	0.5g
3 ct.	⌀ 9.4 mm	0.6g
4 ct.	⌀ 10.4 mm	0.8g
5 ct.	⌀ 11.2 mm	1g
6 ct.	⌀ 11.9 mm	1.2g
7 ct.	⌀ 12.5 mm	1.4g
8 ct.	⌀ 13 mm	1.6g
10 ct.	⌀ 14.1 mm	2g
15 ct.	⌀ 16.1 mm	3g
20 ct.	⌀ 17.7 mm	4g

Oval Diamond Sizes

Oval Carat Weight	Oval MM Size	Oval Grams Weight
0.03 ct.	2.4 mm × 1.7 mm	0.006g
0.05 ct.	2.9 mm × 2 mm	0.01g
0.07 ct.	3.3 mm × 2.3 mm	0.014g
0.1 ct.	3.6 mm × 2.5 mm	0.02g
0.15 ct.	4.2 mm × 2.9 mm	0.03g
0.2 ct.	4.6 mm × 3.2 mm	0.04g
0.25 ct.	4.9 mm × 3.4 mm	0.05g
0.33 ct.	5.5 mm × 3.8 mm	0.066g
0.4 ct.	5.8 mm × 4 mm	0.08g
0.5 ct.	6.2 mm × 4.3 mm	0.1g
0.65 ct.	6.8 mm × 4.7 mm	0.13g
0.75 ct.	7.2 mm × 5 mm	0.15g
0.85 ct.	7.5 mm × 5.2 mm	0.17g
1 ct.	7.9 mm × 5.5 mm	0.2g
1.25 ct.	8.5 mm × 5.9 mm	0.25g

Oval Carat Weight	Oval MM Size	Oval Grams Weight
1.5 ct.	9.1 mm × 6.3 mm	0.3g
1.75 ct.	9.5 mm × 6.6 mm	0.35g
2 ct.	9.9 mm × 6.9 mm	0.4g
2.25 ct.	10.4 mm × 7.2 mm	0.45g
2.5 ct.	10.7 mm × 7.4 mm	0.5g
3 ct.	11.4 mm × 7.9 mm	0.6g
4 ct.	12.5 mm × 8.7 mm	0.8g
5 ct.	13.5 mm × 9.4 mm	1g
6 ct.	14.4 mm × 10 mm	1.2g
7 ct.	15.1 mm × 10.5 mm	1.4g
8 ct.	15.8 mm × 11 mm	1.6g
10 ct.	17 mm × 11.8 mm	2g
15 ct.	19.4 mm × 13.5 mm	3g
20 ct.	21.5 mm × 14.9 mm	4g

Princess Diamond Sizes

Princess Carat Weight	Princess MM Size	Princess Grams Weight
0.03 ct.	1.7 mm × 1.7 mm	0.006g
0.05 ct.	2.1 mm × 2.1 mm	0.01g
0.07 ct.	2.3 mm × 2.3 mm	0.014g
0.1 ct.	2.6 mm × 2.6 mm	0.02g
0.15 ct.	3 mm × 3 mm	0.03g
0.2 ct.	3.3 mm × 3.3 mm	0.04g
0.25 ct.	3.5 mm × 3.5 mm	0.05g
0.33 ct.	3.9 mm × 3.9 mm	0.066g
0.4 ct.	4.1 mm × 4.1 mm	0.08g
0.5 ct.	4.4 mm × 4.4 mm	0.1g
0.65 ct.	4.8 mm × 4.8 mm	0.13g
0.75 ct.	5.1 mm × 5.1 mm	0.15g
0.85 ct.	5.3 mm × 5.3 mm	0.17g
1 ct.	5.6 mm × 5.6 mm	0.2g
1.25 ct.	6 mm × 6 mm	0.25g

Princess Carat Weight	Princess MM Size	Princess Grams Weight
1.5 ct.	6.4 mm × 6.4 mm	0.3g
1.75 ct.	6.7 mm × 6.7 mm	0.35g
2 ct.	7 mm × 7 mm	0.4g
2.25 ct.	7.3 mm × 7.3 mm	0.45g
2.5 ct.	7.6 mm × 7.6 mm	0.5g
3 ct.	8.1 mm × 8.1 mm	0.6g
4 ct.	8.9 mm × 8.9 mm	0.8g
5 ct.	9.6 mm × 9.6 mm	1g
6 ct.	10.2 mm × 10.2 mm	1.2g
7 ct.	10.7 mm × 10.7 mm	1.4g
8 ct.	11.2 mm × 11.2 mm	1.6g
10 ct.	12 mm × 12 mm	2g
15 ct.	13.8 mm × 13.8 mm	3g
20 ct.	15.2 mm × 15.2 mm	4g

Cushion Diamond Sizes

Cushion Carat Weight	Cushion MM Size	Cushion Grams Weight
0.03 ct.	1.7 mm × 1.7 mm	0.006g
0.05 ct.	2 mm × 2 mm	0.01g
0.07 ct.	2.3 mm × 2.3 mm	0.014g
0.1 ct.	2.6 mm × 2.6 mm	0.02g
0.15 ct.	2.9 mm × 2.9 mm	0.03g
0.2 ct.	3.2 mm × 3.2 mm	0.04g
0.25 ct.	3.5 mm × 3.5 mm	0.05g
0.33 ct.	3.8 mm × 3.8 mm	0.066g
0.4 ct.	4.1 mm × 4.1 mm	0.08g
0.5 ct.	4.4 mm × 4.4 mm	0.1g
0.65 ct.	4.8 mm × 4.8 mm	0.13g
0.75 ct.	5 mm × 5 mm	0.15g
0.85 ct.	5.3 mm × 5.3 mm	0.17g
1 ct.	5.5 mm × 5.5 mm	0.2g
1.25 ct.	6 mm × 6 mm	0.25g

Cushion Carat Weight	Cushion MM Size	Cushion Grams Weight
1.5 ct.	6.3 mm × 6.3 mm	0.3g
1.75 ct.	6.7 mm × 6.7 mm	0.35g
2 ct.	7 mm × 7 mm	0.4g
2.25 ct.	7.3 mm × 7.3 mm	0.45g
2.5 ct.	7.5 mm × 7.5 mm	0.5g
3 ct.	8 mm × 8 mm	0.6g
4 ct.	8.8 mm × 8.8 mm	0.8g
5 ct.	9.5 mm × 9.5 mm	1g
6 ct.	10.1 mm × 10.1 mm	1.2g
7 ct.	10.6 mm × 10.6 mm	1.4g
8 ct.	11.1 mm × 11.1 mm	1.6g
10 ct.	12 mm × 12 mm	2g
15 ct.	13.7 mm × 13.7 mm	3g
20 ct.	15.1 mm × 15.1 mm	4g

Emerald Diamond Sizes

Emerald Carat Weight	Emerald MM Size	Emerald Grams Weight
0.03 ct.	2.2 mm × 1.5 mm	0.006g
0.05 ct.	2.6 mm × 1.8 mm	0.01g
0.07 ct.	2.9 mm × 2 mm	0.014g
0.1 ct.	3.2 mm × 2.2 mm	0.02g
0.15 ct.	3.7 mm × 2.6 mm	0.03g
0.2 ct.	4 mm × 2.8 mm	0.04g
0.25 ct.	4.3 mm × 3 mm	0.05g
0.33 ct.	4.8 mm × 3.3 mm	0.066g
0.4 ct.	5.2 mm × 3.6 mm	0.08g
0.5 ct.	5.5 mm × 3.8 mm	0.1g
0.65 ct.	6 mm × 4.2 mm	0.13g
0.75 ct.	6.3 mm × 4.4 mm	0.15g
0.85 ct.	6.6 mm × 4.6 mm	0.17g
1 ct.	6.9 mm × 4.8 mm	0.2g
1.25 ct.	7.5 mm × 5.2 mm	0.25g

Emerald Carat Weight	Emerald MM Size	Emerald Grams Weight
1.5 ct.	7.9 mm × 5.5 mm	0.3g
1.75 ct.	8.4 mm × 5.8 mm	0.35g
2 ct.	8.8 mm × 6.1 mm	0.4g
2.25 ct.	9.1 mm × 6.3 mm	0.45g
2.5 ct.	9.4 mm × 6.5 mm	0.5g
3 ct.	10.1 mm × 7 mm	0.6g
4 ct.	11.1 mm × 7.7 mm	0.8g
5 ct.	11.8 mm × 8.2 mm	1g
6 ct.	12.7 mm × 8.8 mm	1.2g
7 ct.	13.2 mm × 9.2 mm	1.4g
8 ct.	13.8 mm × 9.6 mm	1.6g
10 ct.	15 mm × 10.4 mm	2g
15 ct.	17.1 mm × 11.9 mm	3g
20 ct.	18.9 mm × 13.1 mm	4g

Radiant Diamond Sizes

Radiant Carat Weight	Radiant MM Size	Radiant Grams Weight
0.03 ct.	2.1 mm × 1.7 mm	0.006g
0.05 ct.	2.5 mm × 2 mm	0.01g
0.07 ct.	2.9 mm × 2.3 mm	0.014g
0.1 ct.	3.1 mm × 2.5 mm	0.02g
0.15 ct.	3.6 mm × 2.9 mm	0.03g
0.2 ct.	4 mm × 3.2 mm	0.04g
0.25 ct.	4.4 mm × 3.5 mm	0.05g
0.33 ct.	4.8 mm × 3.8 mm	0.066g
0.4 ct.	5 mm × 4 mm	0.08g
0.5 ct.	5.4 mm × 4.3 mm	0.1g
0.65 ct.	5.9 mm × 4.7 mm	0.13g
0.75 ct.	6.3 mm × 5 mm	0.15g
0.85 ct.	6.5 mm × 5.2 mm	0.17g
1 ct.	6.9 mm × 5.5 mm	0.2g
1.25 ct.	7.4 mm × 5.9 mm	0.25g

Radiant Carat Weight	Radiant MM Size	Radiant Grams Weight
1.5 ct.	7.9 mm × 6.3 mm	0.3g
1.75 ct.	8.3 mm × 6.6 mm	0.35g
2 ct.	8.6 mm × 6.9 mm	0.4g
2.25 ct.	9 mm × 7.2 mm	0.45g
2.5 ct.	9.3 mm × 7.4 mm	0.5g
3 ct.	9.9 mm × 7.9 mm	0.6g
4 ct.	10.9 mm × 8.7 mm	0.8g
5 ct.	11.8 mm × 9.4 mm	1g
6 ct.	12.5 mm × 10 mm	1.2g
7 ct.	13.1 mm × 10.5 mm	1.4g
8 ct.	13.8 mm × 11 mm	1.6g
10 ct.	14.8 mm × 11.8 mm	2g
15 ct.	16.9 mm × 13.5 mm	3g
20 ct.	18.6 mm × 14.9 mm	4g

Asscher Diamond Sizes

Asscher Carat Weight	Asscher MM Size	Asscher Grams Weight
0.03 ct.	1.7 mm × 1.7 mm	0.006g
0.05 ct.	2 mm × 2 mm	0.01g
0.07 ct.	2.3 mm × 2.3 mm	0.014g
0.1 ct.	2.6 mm × 2.6 mm	0.02g
0.15 ct.	2.9 mm × 2.9 mm	0.03g
0.2 ct.	3.2 mm × 3.2 mm	0.04g
0.25 ct.	3.5 mm × 3.5 mm	0.05g
0.33 ct.	3.8 mm × 3.8 mm	0.066g
0.4 ct.	4.1 mm × 4.1 mm	0.08g
0.5 ct.	4.4 mm × 4.4 mm	0.1g
0.65 ct.	4.8 mm × 4.8 mm	0.13g
0.75 ct.	5 mm × 5 mm	0.15g
0.85 ct.	5.3 mm × 5.3 mm	0.17g
1 ct.	5.5 mm × 5.5 mm	0.2g
1.25 ct.	6 mm × 6 mm	0.25g

Asscher Carat Weight	Asscher MM Size	Asscher Grams Weight
1.5 ct.	6.3 mm × 6.3 mm	0.3g
1.75 ct.	6.7 mm × 6.7 mm	0.35g
2 ct.	7 mm × 7 mm	0.4g
2.25 ct.	7.3 mm × 7.3 mm	0.45g
2.5 ct.	7.5 mm × 7.5 mm	0.5g
3 ct.	8 mm × 8 mm	0.6g
4 ct.	8.8 mm × 8.8 mm	0.8g
5 ct.	9.5 mm × 9.5 mm	1g
6 ct.	10.1 mm × 10.1 mm	1.2g
7 ct.	10.6 mm × 10.6 mm	1.4g
8 ct.	11.1 mm × 11.1 mm	1.6g
10 ct.	12 mm × 12 mm	2g
15 ct.	13.7 mm × 13.7 mm	3g
20 ct.	15.1 mm × 15.1 mm	4g

Marquise Diamond Sizes

Marquise Carat Weight	Marquise MM Size	Marquise Grams Weight
0.03 ct.	3 mm × 1.5 mm	0.006g
0.05 ct.	3.6 mm × 1.8 mm	0.01g
0.07 ct.	4 mm × 2 mm	0.014g
0.1 ct.	4.6 mm × 2.3 mm	0.02g
0.15 ct.	5.2 mm × 2.6 mm	0.03g
0.2 ct.	5.8 mm × 2.9 mm	0.04g
0.25 ct.	6.2 mm × 3.1 mm	0.05g
0.33 ct.	6.8 mm × 3.4 mm	0.066g
0.4 ct.	7.4 mm × 3.7 mm	0.08g
0.5 ct.	7.8 mm × 3.9 mm	0.1g
0.65 ct.	8.6 mm × 4.3 mm	0.13g
0.75 ct.	9 mm × 4.5 mm	0.15g
0.85 ct.	9.4 mm × 4.7 mm	0.17g
1 ct.	10 mm × 5 mm	0.2g
1.25 ct.	10.6 mm × 5.3 mm	0.25g

Marquise Carat Weight	Marquise MM Size	Marquise Grams Weight
1.5 ct.	11.4 mm × 5.7 mm	0.3g
1.75 ct.	12 mm × 6 mm	0.35g
2 ct.	12.4 mm × 6.2 mm	0.4g
2.25 ct.	13 mm × 6.5 mm	0.45g
2.5 ct.	13.4 mm × 6.7 mm	0.5g
3 ct.	14.2 mm × 7.1 mm	0.6g
4 ct.	15.8 mm × 7.9 mm	0.8g
5 ct.	17 mm × 8.5 mm	1g
6 ct.	18 mm × 9 mm	1.2g
7 ct.	19 mm × 9.5 mm	1.4g
8 ct.	19.8 mm × 9.9 mm	1.6g
10 ct.	21.4 mm × 10.7 mm	2g
15 ct.	24.4 mm × 12.2 mm	3g
20 ct.	27 mm × 13.5 mm	4g

Heart Diamond Sizes

Heart Carat Weight	Heart MM Size	Heart Grams Weight
0.03 ct.	2 mm × 2 mm	0.006g
0.05 ct.	2.4 mm × 2.4 mm	0.01g
0.07 ct.	2.7 mm × 2.7 mm	0.014g
0.1 ct.	3 mm × 3 mm	0.02g
0.15 ct.	3.5 mm × 3.5 mm	0.03g
0.2 ct.	3.8 mm × 3.8 mm	0.04g
0.25 ct.	4.1 mm × 4.1 mm	0.05g
0.33 ct.	4.5 mm × 4.5 mm	0.066g
0.4 ct.	4.8 mm × 4.8 mm	0.08g
0.5 ct.	5.2 mm × 5.2 mm	0.1g
0.65 ct.	5.7 mm × 5.7 mm	0.13g
0.75 ct.	5.9 mm × 5.9 mm	0.15g
0.85 ct.	6.2 mm × 6.2 mm	0.17g
1 ct.	6.5 mm × 6.5 mm	0.2g
1.25 ct.	7 mm × 7 mm	0.25g

Heart Carat Weight	Heart MM Size	Heart Grams Weight
1.5 ct.	7.5 mm × 7.5 mm	0.3g
1.75 ct.	7.9 mm × 7.9 mm	0.35g
2 ct.	8.2 mm × 8.2 mm	0.4g
2.25 ct.	8.5 mm × 8.5 mm	0.45g
2.5 ct.	8.9 mm × 8.9 mm	0.5g
3 ct.	9.4 mm × 9.4 mm	0.6g
4 ct.	10.4 mm × 10.4 mm	0.8g
5 ct.	11.2 mm × 11.2 mm	1g
6 ct.	11.9 mm × 11.9 mm	1.2g
7 ct.	12.5 mm × 12.5 mm	1.4g
8 ct.	13 mm × 13 mm	1.6g
10 ct.	14.1 mm × 14.1 mm	2g
15 ct.	16.1 mm × 16.1 mm	3g
20 ct.	17.7 mm × 17.7 mm	4g

Pear Diamond Sizes

Pear Carat Weight	Pear MM Size	Pear Grams Weight
0.03 ct.	2.6 mm × 1.7 mm	0.006g
0.05 ct.	3.2 mm × 2.1 mm	0.01g
0.07 ct.	3.5 mm × 2.3 mm	0.014g
0.1 ct.	3.9 mm × 2.6 mm	0.02g
0.15 ct.	4.5 mm × 3 mm	0.03g
0.2 ct.	4.9 mm × 3.3 mm	0.04g
0.25 ct.	5.3 mm × 3.5 mm	0.05g
0.33 ct.	5.9 mm × 3.9 mm	0.066g
0.4 ct.	6.1 mm × 4.1 mm	0.08g
0.5 ct.	6.8 mm × 4.5 mm	0.1g
0.65 ct.	7.4 mm × 4.9 mm	0.13g
0.75 ct.	7.7 mm × 5.1 mm	0.15g
0.85 ct.	8 mm × 5.3 mm	0.17g
1 ct.	8.4 mm × 5.6 mm	0.2g
1.25 ct.	9.1 mm × 6.1 mm	0.25g

Pear Carat Weight	Pear MM Size	Pear Grams Weight
1.5 ct.	9.6 mm × 6.4 mm	0.3g
1.75 ct.	10.2 mm × 6.8 mm	0.35g
2 ct.	10.6 mm × 7.1 mm	0.4g
2.25 ct.	11.1 mm × 7.4 mm	0.45g
2.5 ct.	11.4 mm × 7.6 mm	0.5g
3 ct.	12.1 mm × 8.1 mm	0.6g
4 ct.	13.4 mm × 8.9 mm	0.8g
5 ct.	14.4 mm × 9.6 mm	1g
6 ct.	15.3 mm × 10.2 mm	1.2g
7 ct.	16.2 mm × 10.8 mm	1.4g
8 ct.	16.8 mm × 11.2 mm	1.6g
10 ct.	18.2 mm × 12.1 mm	2g
15 ct.	20.9 mm × 13.9 mm	3g
20 ct.	23 mm × 15.3 mm	4g

钻石的尺寸与重量

常见形状的标准尺寸

克拉有多大？欢迎来到钻石尺寸与重量页面——这是您了解钻石大小与重量的指南。在这里，您可以深入了解克拉大小，并在屏幕上直观查看钻石的实际尺寸，帮助您在选购钻石时做出明智的决定。

我们直观易用的互动式钻石尺寸图表以及先进的钻石尺寸与重量换算工具，可基于标准比例提供可靠的估算。请注意，对于非标准切工，估算结果可能会有所差异。如有任何疑问，欢迎通过在线客服与我们的团队联系。