1.00 - 1.49ct J SI1 Lab Grown Cushion
As of April 2026, there are 510 lab grown cushion diamonds with J color and SI1 clarity in the 1.00 - 1.49ct range available across retailers worldwide. Prices range from ￥28,657 JPY to ￥4,893,134 JPY, with an average of ￥441,496 JPY.
Last updated: April 2026
Available
510
Lowest Price
￥28,657 JPY
Highest Price
￥4,893,134 JPY
Average Price
￥441,496 JPY
Market Intelligence
Retailers Selling
15
Cross Retailer %
N/A
Price Spread
9.6%
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
$1,133
Median
$1,446
90th Percentile
$2,416
Score Distribution
510 diamonds scored across 4 quality tiers
Excellent
28 (5.5%)
Very Good
46 (9.0%)
Good
318 (62.4%)
Average
118 (23.1%)
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