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0.51ct I SI2 Round Natural Diamond

EX • I/SI2 • IGI 841685200

Shape and cutting style on the report: Round brilliant

Certificate IGI 841685200

Diamond specifications and retailer prices

From $388 CAD
As of November 6, 2026
Save $1,670 CAD (81%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $2,059 CAD at NZ Jewellers · As of November 4, 2026
View at NZ Jewellers

About this 0.51ct natural round diamond

This 0.51ct natural round sits in the half to three-quarter carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 841685200. Listed at 12 retailers as of November 4, 2026, with prices from $388 to $2,059, a $1,670 spread on the same certified stone. NZ Jewellers lists it at $2,059. 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

0.51
Carat
I
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.7°
Pavilion angle40.3°
OriginNatural
Grading LabIGI
CertificateIGI 841685200
Dimensions5.11 × 5.19 × 3.09 mm
L/W Ratio1.02
Girdle conditionFaceted
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
5.11 mm5.19 mm0.51 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 841685200
Side View
Table 59.0%Crown 34.7°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 60.2%

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: Nov 6
Current: $2,059 CAD|Low: $388 CAD|High: $2,059 CAD|Avg: $770 CAD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 2$388 CAD
Retailer 3$494 CAD
Retailer 12$538 CAD
Retailer 8$552 CAD
Retailer 11$599 CAD
Retailer 5$637 CAD
Retailer 7$709 CAD
Retailer 10$723 CAD
Retailer 4$817 CAD
Retailer 6$870 CAD
Retailer 9$1,237 CAD
NZ Jewellers$2,059 CAD

21 data points across 12 retailers

12 retailers$388 CAD to $2,059 CAD

A
Cheapest Retailer
-
$388 CAD
A
Retailer 2
-
$494 CAD
View
Final sale: no returns
A
Retailer 3
-
$538 CAD
View
A
Retailer 4
-
$552 CAD
View
A
Retailer 5
-
$599 CAD
View
A
Retailer 6
-
$637 CAD
View
A
Retailer 7
-
$709 CAD
View
A
Retailer 8
-
$723 CAD
View
B+
Retailer 9
-
$817 CAD
View
A
Retailer 10
-
$870 CAD
View
B
Retailer 11
-
$1,237 CAD
View
Most Expensive
C
NZ Jewellers
b667473d-a753-4bb3-887c-c678a9e7309a · Nov 4
$2,059 CAD
$1,474 USD
View
11 more retailers have this diamond
Prices start from $388 CADSave up to $1,670 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
0.51ct Round
$388 CAD