1.00 - 1.49ct I SI1 Lab Grown Radiant
As of April 2026, there are 417 lab grown radiant diamonds with I color and SI1 clarity in the 1.00 - 1.49ct range available across retailers worldwide. Prices range from £152 GBP to £426,845 GBP, with an average of £4,344 GBP.
Last updated: April 2026
Available
417
Lowest Price
£152 GBP
Highest Price
£426,845 GBP
Average Price
£4,344 GBP
Market Intelligence
Retailers Selling
25
Cross Retailer %
N/A
Price Spread
32.1%
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
$405
Median
$1,371
90th Percentile
$3,024
Score Distribution
417 diamonds scored across 4 quality tiers
Excellent
14 (3.4%)
Very Good
29 (7.0%)
Good
263 (63.1%)
Average
111 (26.6%)
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