1.00 - 1.49ct I SI1 Lab Grown Cushion
As of April 2026, there are 305 lab grown cushion diamonds with I color and SI1 clarity in the 1.00 - 1.49ct range available across retailers worldwide. Prices range from ￥29,701 JPY to ￥2,867,357 JPY, with an average of ￥445,735 JPY.
Last updated: April 2026
Available
305
Lowest Price
￥29,701 JPY
Highest Price
￥2,867,357 JPY
Average Price
￥445,735 JPY
Market Intelligence
Retailers Selling
16
Cross Retailer %
N/A
Price Spread
128.0%
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
$431
Median
$1,385
90th Percentile
$4,226
Score Distribution
305 diamonds scored across 4 quality tiers
Excellent
32 (10.5%)
Very Good
61 (20.0%)
Good
77 (25.2%)
Average
135 (44.3%)
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