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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 €128 EUR
₹13,580 INR
As of November 1, 2026
Save €722 EUR (85%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: €849 EUR 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 €128 to €849, a €722 spread on the same certified stone. NZ Jewellers lists it at €849. 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
Colour
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: Nov 1
Current: €292 EUR|Low: €128 EUR|High: €439 EUR|Avg: €275 EUR|+7.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 2€128 EUR
Retailer 8€190 EUR
Retailer 4€202 EUR
Retailer 9€242 EUR
Retailer 6€290 EUR
Retailer 1€292 EUR
Retailer 7€374 EUR
Retailer 5€383 EUR
Retailer 3€433 EUR

43 data points across 9 retailers

24 retailers€128 EUR to €849 EUR

A
Cheapest Retailer
-
€128 EUR
₹13,580 INR
Retailer 2
-
€188 EUR
$210 USD
View
Price last confirmed 57 days ago
Retailer 3
-
€188 EUR
$210 USD
View
Price last confirmed 45 days ago
Retailer 4
-
€188 EUR
$210 USD
View
Price last confirmed 25 days ago
Retailer 5
-
€188 EUR
$210 USD
View
Price last confirmed 7 days ago
A
Retailer 6
-
€188 EUR
$210 USD
View
Retailer 7
-
€201 EUR
$225 USD
View
Price last confirmed 38 days ago
A
Retailer 8
-
€202 EUR
$226 USD
View
Retailer 9
-
€209 EUR
$234 USD
View
Price last confirmed 33 days ago
A
Retailer 10
-
€209 EUR
$234 USD
View
Retailer 11
-
€242 EUR
$270 USD
View
Price last confirmed 15 days ago
Retailer 12
-
€252 EUR
$282 USD
View
Price last confirmed 56 days ago
Retailer 13
-
€252 EUR
$282 USD
View
Price last confirmed 44 days ago
Retailer 14
-
€252 EUR
$282 USD
View
Price last confirmed 9 days ago
A
Retailer 15
-
€252 EUR
$282 USD
View
Retailer 16
-
€290 EUR
ZAR 5,237 ZAR
View
Price last confirmed 7 days ago
B+
Retailer 17
-
€292 EUR
£257 GBP
View
B+
Retailer 18
-
€304 EUR
$340 USD
View
B+
Retailer 19
-
€374 EUR
$418 USD
View
B+
Retailer 20
-
€383 EUR
View
B+
Retailer 21
-
€433 EUR
£381 GBP
View
Retailer 22
-
€849 EUR
$949 USD
View
Price last confirmed 57 days ago
Retailer 23
-
€849 EUR
$949 USD
View
Price last confirmed 44 days ago
Most Expensive
B
NZ Jewellers
f994a225-7a28-4c6d-aed1-513066c0ab63 · Oct 26
€849 EUR
$949 USD
View
23 more retailers have this diamond
Prices start from €128 EURSave up to €722 EUR

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
€128 EUR