Round|Natural|IGI

0.31ct I SI1 Round Natural Diamond

EX • I/SI1 • IGI 146452203

Shape and cutting style on the report: Round brilliant

Certificate IGI 146452203

Diamond specifications and retailer prices

From $210 USD
As of October 25, 2026
Save $739 USD (78%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $949 USD at NZ Jewellers · As of October 26, 2026
View at NZ Jewellers

About this 0.31ct natural round diamond

This 0.31ct natural round sits in the sub-half-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 146452203. Listed at 24 retailers as of October 26, 2026, with prices from $210 to $949, a $739 spread on the same certified stone. NZ Jewellers lists it at $949. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.31
Carat
I
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle34.3°
Pavilion angle41.1°
OriginNatural
Grading LabIGI
CertificateIGI 146452203
Dimensions4.39 × 4.46 × 2.65 mm
L/W Ratio1.02
Girdle conditionFaceted
Culet sizePointed
Top View
4.39 mm4.46 mm0.31 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 146452203
Side View
Table 61.5%Crown 34.3°Girdle: MediumPavilion 41.1°Culet: NoneDepth 60.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 25
Current: $484 USD|Low: $148 USD|High: $490 USD|Avg: $306 USD|+0.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 6$148 USD
Retailer 8$213 USD
Retailer 3$226 USD
Retailer 9$270 USD
Retailer 5$324 USD
Retailer 2$326 USD
Retailer 7$418 USD
Retailer 4$427 USD
Retailer 1$484 USD

43 data points across 9 retailers

24 retailers$210 USD to $949 USD

Retailer 1
-
$148 USD
₹14,064 INR
Price last confirmed 17 days ago
Retailer 2
-
$210 USD
View
Price last confirmed 57 days ago
Retailer 3
-
$210 USD
View
Price last confirmed 44 days ago
Retailer 4
-
$210 USD
View
Price last confirmed 24 days ago
A
Retailer 5
-
$210 USD
View
A
Retailer 6
-
$210 USD
View
Retailer 7
-
$225 USD
View
Price last confirmed 37 days ago
A
Retailer 8
-
$226 USD
View
Retailer 9
-
$234 USD
View
Price last confirmed 33 days ago
A
Retailer 10
-
$234 USD
View
Retailer 11
-
$270 USD
View
Price last confirmed 14 days ago
Retailer 12
-
$282 USD
View
Price last confirmed 55 days ago
Retailer 13
-
$282 USD
View
Price last confirmed 43 days ago
Retailer 14
-
$282 USD
View
Price last confirmed 9 days ago
A
Retailer 15
-
$282 USD
View
A
Retailer 16
-
$324 USD
ZAR 5,237 ZAR
View
B+
Retailer 17
-
$326 USD
£257 GBP
View
B+
Retailer 18
-
$340 USD
View
B+
Retailer 19
-
$418 USD
View
B+
Retailer 20
-
$427 USD
€407 EUR
View
B+
Retailer 21
-
$484 USD
£381 GBP
View
Retailer 22
-
$949 USD
View
Price last confirmed 56 days ago
Retailer 23
-
$949 USD
View
Price last confirmed 43 days ago
Most Expensive
B
NZ Jewellers
f994a225-7a28-4c6d-aed1-513066c0ab63 · Oct 26
$949 USD
View
23 more retailers have this diamond
Prices start from $210 USDSave up to $739 USD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
0.31ct Round
$210 USD