3.00 to 4.99ct J SI1 Natural Cushion
Last updated: June 2026
Available
2,164
Lowest Price
£121 GBP
Highest Price
£261,887 GBP
Average Price
£6,621 GBP
Market Intelligence
Retailers Selling
36
Cross Retailer %
N/A
Price Spread
59.7%
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
$4,309
Median
$6,839
90th Percentile
$10,860
Score Distribution
2.2K diamonds scored across 4 quality tiers
Excellent
340 (15.7%)
Very Good
551 (25.5%)
Good
695 (32.1%)
Average
578 (26.7%)
Find Your Diamond
Search 2,164 J SI1 cushion diamonds and compare prices.
Search DiamondsConsider Instead
Save money without compromising on what matters. These alternatives are visually similar but cost less.