5.00ct+ J SI1 Lab Grown Cushion
Last updated: June 2026
Available
639
Lowest Price
£157 GBP
Highest Price
£69,777 GBP
Average Price
£3,336 GBP
Market Intelligence
Retailers Selling
13
Cross Retailer %
N/A
Price Spread
139.2%
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
$682
Median
$7,774
90th Percentile
$14,515
Score Distribution
639 diamonds scored across 4 quality tiers
Excellent
7 (1.1%)
Very Good
81 (12.7%)
Good
394 (61.7%)
Average
157 (24.6%)
Find Your Diamond
Search 639 J SI1 cushion diamonds and compare prices.
Search Diamonds