1.50 - 1.99ct I SI1 Lab Grown Cushion
As of April 2026, there are 303 lab grown cushion diamonds with I color and SI1 clarity in the 1.50 - 1.99ct range available across retailers worldwide. Prices range from ￥29,701 JPY to ￥2,867,357 JPY, with an average of ￥382,265 JPY.
Last updated: April 2026
Available
303
Lowest Price
￥29,701 JPY
Highest Price
￥2,867,357 JPY
Average Price
￥382,265 JPY
Market Intelligence
Retailers Selling
22
Cross Retailer %
N/A
Price Spread
137.4%
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
$283
Median
$796
90th Percentile
$1,570
Score Distribution
303 diamonds scored across 4 quality tiers
Excellent
31 (10.2%)
Very Good
87 (28.7%)
Good
69 (22.8%)
Average
116 (38.3%)
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