CaratHunter
Plans
Round|Natural|IGI

0.31ct I SI2 Round Natural Diamond

EX • I/SI2 • IGI 607305230

Shape and cutting style on the report: Round brilliant

Certificate IGI 607305230

Diamond specifications and retailer prices

From $185 USD
As of October 31, 2026
Save $653 USD (78%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $838 USD at NZ Jewellers · As of October 30, 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 607305230. Listed at 12 retailers as of October 30, 2026, with prices from $185 to $838, a $653 spread on the same certified stone. NZ Jewellers lists it at $838. 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle35.6°
Pavilion angle41.4°
OriginNatural
Grading LabIGI
CertificateIGI 607305230
Dimensions4.29 × 4.27 × 2.71 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Top View
4.29 mm4.27 mm0.31 ctI / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI 607305230
Side View
Table 59.0%Crown 35.6°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 63.2%

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: Oct 31
Current: $838 USD|Low: $182 USD|High: $838 USD|Avg: $318 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 1, 2026
Retailer 11$184 USD
Retailer 13$185 USD
Retailer 10$195 USD
Retailer 3$199 USD
Retailer 9$206 USD
Retailer 12$238 USD
Retailer 14$249 USD
Retailer 6$279 USD
Retailer 5$315 USD
Retailer 8$336 USD
Retailer 2$381 USD
Retailer 4$394 USD
Retailer 7$427 USD
NZ Jewellers$838 USD

40 data points across 14 retailers

12 retailers$185 USD to $838 USD

A
Cheapest Retailer
-
$185 USD
Retailer 2
-
$195 USD
View
Price last confirmed 11 days ago
A
Retailer 3
-
$199 USD
View
A
Retailer 4
-
$206 USD
View
B+
Retailer 5
-
$238 USD
View
B+
Retailer 6
-
$249 USD
View
B+
Retailer 7
-
$315 USD
View
B+
Retailer 8
-
$336 USD
€320 EUR
View
B+
Retailer 9
-
$358 USD
£282 GBP
View
B+
Retailer 10
-
$381 USD
£300 GBP
View
B+
Retailer 11
-
$427 USD
£336 GBP
View
Most Expensive
C
NZ Jewellers
305643ee-613d-45d6-8494-73ccda8d8eb7 · Oct 30
$838 USD
View
11 more retailers have this diamond
Prices start from $185 USDSave up to $653 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
$185 USD