Diamond 4C’s | Carat Weight.

By Mark Hiroshi Willis (GIA G.G.)

Diamond Carat Weight.

When a person asks, “How many carats is it?”  They typically are referring to a diamond’s size.  However, the word “carats” is actually a term used for a stones weight and is derived from the carob seed which were used in ancient times for weighing the stones.  Today, a 1 carat diamond weighs 0.2 grams.

Keypoints

• In Japan, the typical carat weight for a diamond engagement ring ranges between 0.20 cts and 0.34 cts.

• We specialize in 1 carat and up diamond engagement rings.

• Approximate millimeter sizes for well cut round diamonds are as follows:

0.25 carats = 4.1 mm.

0.50 carats = 5.2 mm.

0.75 carats = 5.9 mm.

1.00 carats = 6.5 mm.

1.25 carats = 6.9 mm.

1.50 carats = 7.4 mm.

2.00 carats = 8.2 mm.

3.00 carats = 9.3 mm.

5.00 carats = 11.0 mm.

10 carats = 17.6 mm.

For further information, contact us at: info@diamonds.co.jp

Located in Tokyo, Japan we specialize in 1 carat and up, diamond engagement rings.

We also carry a regular line of wedding bands, eternity rings, diamond earrings, diamond necklaces, and unique diamond accessories.