1.50 - 1.99ct I SI1 Natural Round
As of April 2026, there are 21,842 natural round diamonds with I color and SI1 clarity in the 1.50 - 1.99ct range available across retailers worldwide. Prices range from $157 NZD to $747,320 NZD, with an average of $9,400 NZD.
Last updated: April 2026
Available
21,842
Lowest Price
$157 NZD
Highest Price
$747,320 NZD
Average Price
$9,400 NZD
Market Intelligence
Retailers Selling
61
Cross Retailer %
N/A
Price Spread
47.1%
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
$3,057
Median
$4,709
90th Percentile
$7,424
Score Distribution
21.8K diamonds scored across 4 quality tiers
Excellent
5,228 (23.9%)
Very Good
7,168 (32.8%)
Good
6,311 (28.9%)
Average
3,134 (14.3%)
Find Your Diamond
Search 21,842 I SI1 round diamonds and compare prices.
Search DiamondsConsider Instead
Save money without compromising on what matters. These alternatives are visually similar but cost less.