2.56 cm
Exact projection proportions
Both visible axes passed the 5% tolerance check.
Hope Diamond (Gem Only)
The Hope Diamond is shown as the measured gemstone alone, without its necklace or setting. It measures 25.60 × 21.78 × 12.00 mm and weighs 45.52 carats, or 9.104 g. The Smithsonian specimen is a Fancy Deep grayish-blue antique cushion brilliant.
Dimensions
- Height
- 2.56 cm
- Length
- 1.2 cm
- Width
- 2.18 cm
- Weight
- 9.1 g
Quick facts
- Dimensions
- 25.60 × 21.78 × 12.00 mm
- Weight
- 45.52 carats
- Color
- Fancy Deep grayish blue
- Clarity
- VS1
- Cut
- antique cushion brilliant
Hope Diamond (Gem Only) · Size infographic
Related objects
Sources and measurement33 References
Dimensions were cross-checked against independent sources before publication.
Measurement basis
Dimensions apply only to the blue gemstone. The face-up view uses 21.78 mm horizontal by 25.60 mm vertical axes; the pendant and necklace are excluded.