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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 $203 AUD
₹13,580 INR
As of November 1, 2026
Save $1,148 AUD (85%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $1,351 AUD 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 $203 to $1,351, a $1,148 spread on the same certified stone. NZ Jewellers lists it at $1,351. 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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $203 AUD|Low: $203 AUD|High: $698 AUD|Avg: $436 AUD|-4.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 1$203 AUD
Retailer 8$303 AUD
Retailer 4$322 AUD
Retailer 9$384 AUD
Retailer 6$461 AUD
Retailer 3$464 AUD
Retailer 7$595 AUD
Retailer 5$608 AUD
Retailer 2$689 AUD

43 data points across 9 retailers

24 retailers$203 AUD to $1,351 AUD

A
Cheapest Retailer
-
$203 AUD
₹13,580 INR
Retailer 2
-
$299 AUD
$210 USD
View
Price last confirmed 57 days ago
Retailer 3
-
$299 AUD
$210 USD
View
Price last confirmed 45 days ago
Retailer 4
-
$299 AUD
$210 USD
View
Price last confirmed 24 days ago
A
Retailer 5
-
$299 AUD
$210 USD
View
A
Retailer 6
-
$299 AUD
$210 USD
View
Retailer 7
-
$320 AUD
$225 USD
View
Price last confirmed 38 days ago
A
Retailer 8
-
$322 AUD
$226 USD
View
Retailer 9
-
$333 AUD
$234 USD
View
Price last confirmed 33 days ago
A
Retailer 10
-
$333 AUD
$234 USD
View
Retailer 11
-
$384 AUD
$270 USD
View
Price last confirmed 15 days ago
Retailer 12
-
$401 AUD
$282 USD
View
Price last confirmed 55 days ago
Retailer 13
-
$401 AUD
$282 USD
View
Price last confirmed 43 days ago
Retailer 14
-
$401 AUD
$282 USD
View
Price last confirmed 9 days ago
A
Retailer 15
-
$401 AUD
$282 USD
View
A
Retailer 16
-
$461 AUD
ZAR 5,237 ZAR
View
B+
Retailer 17
-
$464 AUD
£257 GBP
View
B+
Retailer 18
-
$483 AUD
$340 USD
View
B+
Retailer 19
-
$595 AUD
$418 USD
View
B+
Retailer 20
-
$608 AUD
€407 EUR
View
B+
Retailer 21
-
$689 AUD
£381 GBP
View
Retailer 22
-
$1,351 AUD
$949 USD
View
Price last confirmed 56 days ago
Retailer 23
-
$1,351 AUD
$949 USD
View
Price last confirmed 44 days ago
Most Expensive
B
NZ Jewellers
f994a225-7a28-4c6d-aed1-513066c0ab63 · Oct 26
$1,351 AUD
$949 USD
View
23 more retailers have this diamond
Prices start from $203 AUDSave up to $1,148 AUD

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
$203 AUD