3.00 - 4.99ct I SI1 Natural Cushion
As of April 2026, there are 2,637 natural cushion diamonds with I color and SI1 clarity in the 3.00 - 4.99ct range available across retailers worldwide. Prices range from $271 AUD to $753,825 AUD, with an average of $13,185 AUD.
Last updated: April 2026
Available
2,637
Lowest Price
$271 AUD
Highest Price
$753,825 AUD
Average Price
$13,185 AUD
Market Intelligence
Retailers Selling
42
Cross Retailer %
N/A
Price Spread
39.1%
30-Day Price Trend
N/A
30-Day Supply Change
N/A
Volatility (30d)
N/A
Price Range
Price per carat distribution across retailers
10th Percentile
$7,461
Median
$11,541
90th Percentile
$15,846
Score Distribution
2.6K diamonds scored across 4 quality tiers
Excellent
476 (18.2%)
Very Good
886 (33.9%)
Good
784 (30.0%)
Average
467 (17.9%)
Find Your Diamond
Search 2,637 I SI1 cushion diamonds and compare prices.
Search DiamondsConsider Instead
Save money without compromising on what matters. These alternatives are visually similar but cost less.