1.00 - 1.49ct J SI1 Lab Grown Radiant
As of April 2026, there are 485 lab grown radiant diamonds with J color and SI1 clarity in the 1.00 - 1.49ct range available across retailers worldwide. Prices range from ￥43,731 JPY to ￥4,242,836 JPY, with an average of ￥431,737 JPY.
Last updated: April 2026
Available
485
Lowest Price
￥43,731 JPY
Highest Price
￥4,242,836 JPY
Average Price
￥431,737 JPY
Market Intelligence
Retailers Selling
15
Cross Retailer %
N/A
Price Spread
11.3%
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
$831
Median
$1,438
90th Percentile
$2,087
Score Distribution
485 diamonds scored across 4 quality tiers
Excellent
10 (2.1%)
Very Good
17 (3.5%)
Good
361 (74.4%)
Average
97 (20.0%)
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