4.5 Carat Sapphire (Round, 9.87mm, Blue)
Color:
Actual size is set for screen
How big is a 4.5 carat round-cut Sapphire?
It depends on the cut proportions, but typically a 4.5ct round-cut Sapphire would measure around 9.87 mm (±4%) in diameter. You can check the finger coverage in the simulator below.
Ring:
Skin tone:
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Ring width:
3.0 mm
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Saved...
64 mm
| Your settings | |
|---|---|
Ring |
Gold |
Skin tone |
Light |
Ring diameter |
16.9 mm |
Ring width |
3.0 mm |
Finger length |
64 mm |
Finger coverage |
59 % |
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Saved...
|
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Ring diameter:
16.9 mm
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Additional Info
Sapphire got its name from the Greek word "sappheiros", which means "blue stone". Today, most people still associate Sapphires with the color blue, however, any gemstone quality Corundum that is not red (Ruby) is actually called Sapphire.
Where to buy?
For certified gemstones, high-end gemstone jewelry, and birthstone jewelry, see Blue Nile
Gem Details
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Name:
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Sapphire |
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Mineral Group:
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Corundum |
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Shape:
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Round |
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Chemical Formula:
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Al2O3 |
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Crystal Structure:
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Hexagonal |
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Hardness:
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9 |
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Specific Gravity
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4 |
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Carat weight:
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4.5 ct |
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Gram weight:
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0.9 g (0.0317 ounces) |
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Points:
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450 pts |
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Length:
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9.87 mm |
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Width:
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9.87 mm |
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Average diameter:
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9.87 mm |
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Est. face-up size:
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76.51 mm² |
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Volume:
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225 mm³ |
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Length-to-width ratio:
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1 |
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Refractive Index:
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1.76 - 1.77 |
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Luster:
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Vitreous to adamantine |
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Wearability:
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Excellent |
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Care Instructions:
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No special or unusual care |
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Color:
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Sapphire can be found in the following colors:
                           
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Birthstone:
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Sapphire is a birthstone for the month of September |
Popular comparisons:
- 4.5ct Sapphire (Round, Blue, 9.87 x 9.87) vs. 4.5ct Diamond (Round, White, 10.73 x 10.73)
- 4.5ct Sapphire (Round, Blue, 9.87 x 9.87) vs. 4ct Sapphire (Round, Blue, 9.49 x 9.49)
- 4.5ct Sapphire (Round, Blue, 9.87 x 9.87) vs. 4.5ct Sapphire (Cushion, Blue, 9.23 x 9.23)
- 4.5ct Sapphire (Round, Blue, 9.87 x 9.87) vs. 1.95ct Diamond (Round, White, 8.12 x 8.12)
- 4.5ct Sapphire (Round, Blue, 9.87 x 9.87) vs. 1.5ct Diamond (Round, White, 7.44 x 7.44)
- 1ct Sapphire (Round, Blue, 5.98 x 5.98) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 2ct Sapphire (Round, Blue, 7.53 x 7.53) vs. 2ct Diamond (Round, White, 8.19 x 8.19)
- 1ct Sapphire (Round, Blue, 6.5 x 6.5) vs. 1ct Sapphire (Cushion, Blue, 6 x 6)
Use the simulator on this page to play around with different ring and finger configurations.