0.20 - 0.49ct J SI1 Lab Grown Cushion
As of April 2026, there are 510 lab grown cushion diamonds with J color and SI1 clarity in the 0.20 - 0.49ct range available across retailers worldwide. Prices range from £151 GBP to £25,814 GBP, with an average of £2,329 GBP.
Last updated: April 2026
Available
510
Lowest Price
£151 GBP
Highest Price
£25,814 GBP
Average Price
£2,329 GBP
Market Intelligence
Retailers Selling
11
Cross Retailer %
N/A
Price Spread
34.8%
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
$802
Median
$1,263
90th Percentile
$1,801
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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