3.00 - 4.99ct I SI1 Lab Grown Cushion
As of April 2026, there are 348 lab grown cushion diamonds with I color and SI1 clarity in the 3.00 - 4.99ct range available across retailers worldwide. Prices range from £157 GBP to £89,886 GBP, with an average of £3,434 GBP.
Last updated: April 2026
Available
348
Lowest Price
£157 GBP
Highest Price
£89,886 GBP
Average Price
£3,434 GBP
Market Intelligence
Retailers Selling
20
Cross Retailer %
N/A
Price Spread
146.4%
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
$264
Median
$479
90th Percentile
$1,787
Score Distribution
348 diamonds scored across 4 quality tiers
Excellent
32 (9.2%)
Very Good
62 (17.8%)
Good
91 (26.1%)
Average
163 (46.8%)
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