3.00 - 4.99ct I SI1 Natural Cushion

As of April 2026, there are 2,676 natural cushion diamonds with I color and SI1 clarity in the 3.00 - 4.99ct range available across retailers worldwide. Prices range from $238 CAD to $662,143 CAD, with an average of $12,649 CAD.

Last updated: April 2026

Available
2,676
Lowest Price
$238 CAD
Highest Price
$662,143 CAD
Average Price
$12,649 CAD

Market Intelligence

Retailers Selling
41
Cross Retailer %
N/A
Price Spread
37.9%
30-Day Price Trend
N/A
30-Day Supply Change
N/A
Volatility (30d)
N/A

Price Range

Price per carat distribution across retailers

$11,486/ct
10th Percentile
$7,612
Median
$11,486
90th Percentile
$16,111

Score Distribution

2.7K diamonds scored across 4 quality tiers

Excellent
495 (18.5%)
Very Good
878 (32.8%)
Good
829 (31.0%)
Average
472 (17.7%)

Find Your Diamond

Search 2,676 I SI1 cushion diamonds and compare prices.

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Consider Instead

Save money without compromising on what matters. These alternatives are visually similar but cost less.

J SI1J colour is visually identical to I to the naked eye
Save 39%
I SI2SI2 inclusions are not visible without magnification
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Lab-Grown I SI1Same specifications, lab-grown origin
Save 96%

Related Specifications

D IFD VVS1D VVS2D VS1D VS2D SI1E IFE VVS1E VVS2E VS1E VS2E SI1F IFF VVS1F VVS2F VS1F VS2F SI1G IFG VVS1G VVS2G VS1G VS2G SI1H IFH VVS1H VVS2H VS1H VS2H SI1I IFI VVS1I VVS2I VS1I VS2I SI1