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Round|Natural|GIA

0.31ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 2566380050

Certificate GIA 2566380050

Diamond specifications and retailer prices

From $264 CAD
₹18,015 INR
As of October 30, 2026
Save $1,474 CAD (85%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,738 CAD 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 GIA 2566380050. Listed at 15 retailers as of October 26, 2026, with prices from $264 to $1,738, a $1,474 spread on the same certified stone. NZ Jewellers lists it at $1,738. 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
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2566380050
Dimensions4.35 × 4.36 × 2.70 mm
L/W Ratio1.00
Key to symbols
Crystal
Top View
4.35 mm4.36 mm0.31 ctI / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 2566380050
Side View
Table 57.0%Crown 35.5°Girdle: NUL-NULPavilion 40.8°Culet: NoneDepth 61.9%

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: Oct 30
Current: $640 CAD|Low: $264 CAD|High: $903 CAD|Avg: $521 CAD|-2.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 31, 2026
Retailer 4$264 CAD
Retailer 9$322 CAD
Retailer 3$376 CAD
Retailer 7$439 CAD
Retailer 6$442 CAD
Retailer 10$570 CAD
Retailer 11$604 CAD
Retailer 1$640 CAD
Retailer 5$642 CAD
Retailer 8$781 CAD
Retailer 2$903 CAD

10 data points across 11 retailers

15 retailers$264 CAD to $1,738 CAD

A
Cheapest Retailer
-
$264 CAD
₹18,015 INR
A
Retailer 2
-
$322 CAD
HK$1,800 HKD
View
A
Retailer 3
-
$376 CAD
$269 USD
View
A
Retailer 4
-
$420 CAD
$301 USD
View
A
Retailer 5
-
$436 CAD
$312 USD
View
A
Retailer 6
-
$439 CAD
$314 USD
View
A
Retailer 7
-
$442 CAD
A$487 AUD
View
A
Retailer 8
-
$517 CAD
$370 USD
View
B+
Retailer 9
-
$570 CAD
$408 USD
View
B+
Retailer 10
-
$604 CAD
ZAR 6,983 ZAR
View
B+
Retailer 11
-
$640 CAD
£360 GBP
View
B+
Retailer 12
-
$642 CAD
€438 EUR
View
B+
Retailer 13
-
$781 CAD
£440 GBP
View
B
Retailer 14
-
$903 CAD
£509 GBP
View
Most Expensive
B
NZ Jewellers
461b3ca3-9f40-4479-821e-e2dd38bfa610 · Oct 26
$1,738 CAD
$1,244 USD
View
14 more retailers have this diamond
Prices start from $264 CADSave up to $1,474 CAD

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
$264 CAD