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Round|Natural|GIA

0.51ct E SI2 Round Natural Diamond

EX • E/SI2 • GIA 2556413733

Certificate GIA 2556413733

Diamond specifications and retailer prices

From $811 NZD
As of November 5, 2026
Save $2,610 NZD (76%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $3,421 NZD 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 E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2556413733. Listed at 16 retailers as of November 4, 2026, with prices from $811 to $3,421, a $2,610 spread on the same certified stone. NZ Jewellers lists it at $3,421. 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
E
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2556413733
Dimensions5.14 × 5.17 × 3.16 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal
Top View
5.14 mm5.17 mm0.51 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556413733
Side View
Table 57.0%Crown 35°Girdle: MediumPavilion 40.6°Culet: NoneDepth 61.2%

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 5
Current: $3,421 NZD|Low: $811 NZD|High: $3,453 NZD|Avg: $1,550 NZD|-0.9%
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
Retailer 15
Retailer 16
November 6, 2026
Retailer 12$811 NZD
Retailer 8$932 NZD
Retailer 5$1,005 NZD
Retailer 6$1,062 NZD
Retailer 4$1,090 NZD
Retailer 9$1,144 NZD
Retailer 7$1,174 NZD
Retailer 15$1,258 NZD
Retailer 10$1,325 NZD
Retailer 11$1,343 NZD
Retailer 14$1,396 NZD
Retailer 3$1,526 NZD
Retailer 2$1,583 NZD
Retailer 13$2,519 NZD
Retailer 16$3,149 NZD
NZ Jewellers$3,421 NZD

24 data points across 16 retailers

16 retailers$811 NZD to $3,421 NZD

A
Cheapest Retailer
-
$811 NZD
A
Retailer 2
-
$932 NZD
View
A
Retailer 3
-
$1,005 NZD
View
Final sale: no returns
A
Retailer 4
-
$1,062 NZD
View
A
Retailer 5
-
$1,090 NZD
View
A
Retailer 6
-
$1,144 NZD
View
A
Retailer 7
-
$1,174 NZD
View
A
Retailer 8
-
$1,258 NZD
View
A
Retailer 9
-
$1,325 NZD
View
A
Retailer 10
-
$1,343 NZD
View
A
Retailer 11
-
$1,396 NZD
View
A
Retailer 12
-
$1,526 NZD
View
B+
Retailer 13
-
$1,583 NZD
View
B
Retailer 14
-
$2,519 NZD
View
B
Retailer 15
-
$3,149 NZD
View
Most Expensive
B
NZ Jewellers
b9c7c7ab-d78f-4973-8967-444245e06663 · Nov 4
$3,421 NZD
$1,923 USD
View
15 more retailers have this diamond
Prices start from $811 NZDSave up to $2,610 NZD

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
$811 NZD