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0.31ct I SI2 Round Natural Diamond

EX • I/SI2 • IGI 815635557

Shape and cutting style on the report: Round brilliant

Certificate IGI 815635557

Diamond specifications and retailer prices

From $115 USD
₹10,921 INR
As of November 1, 2026
Save $667 USD (85%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $782 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 815635557. Listed at 12 retailers as of October 30, 2026, with prices from $115 to $782, a $667 spread on the same certified stone. NZ Jewellers lists it at $782. 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 angle35.3°
Pavilion angle41.7°
OriginNatural
Grading LabIGI
CertificateIGI 815635557
Dimensions4.30 × 4.36 × 2.72 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
4.30 mm4.36 mm0.31 ctI / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI 815635557
Side View
Table 59.0%Crown 35.3°Girdle: THN-MEDPavilion 41.7°Culet: NoneDepth 62.9%

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: $782 USD|Low: $114 USD|High: $782 USD|Avg: $306 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 4$115 USD
Retailer 10$173 USD
Retailer 8$186 USD
Retailer 7$192 USD
Retailer 11$232 USD
Retailer 9$302 USD
Retailer 2$313 USD
Retailer 3$342 USD
Retailer 5$355 USD
Retailer 6$399 USD
NZ Jewellers$782 USD

43 data points across 11 retailers

12 retailers$115 USD to $782 USD

A
Cheapest Retailer
-
$115 USD
₹10,921 INR
A
Retailer 2
-
$173 USD
View
Retailer 3
-
$185 USD
View
Price last confirmed 38 days ago
Retailer 4
-
$186 USD
View
Price last confirmed 16 days ago
A
Retailer 5
-
$192 USD
View
B+
Retailer 6
-
$232 USD
View
B+
Retailer 7
-
$302 USD
View
B+
Retailer 8
-
$313 USD
€298 EUR
View
B+
Retailer 9
-
$342 USD
View
B+
Retailer 10
-
$355 USD
£280 GBP
View
B+
Retailer 11
-
$399 USD
£314 GBP
View
Most Expensive
C
NZ Jewellers
59877cd0-646d-46d0-9ead-6101f9b78b76 · Oct 30
$782 USD
View
11 more retailers have this diamond
Prices start from $115 USDSave up to $667 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
$115 USD