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Round|Natural|GIA

0.51ct E SI2 Round Natural Diamond

EX • E/SI2 • GIA 2556489534

Certificate GIA 2556489534

Diamond specifications and retailer prices

From $608 USD
As of November 4, 2026
Save $1,731 USD (74%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $2,339 USD 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 2556489534. Listed at 17 retailers as of November 4, 2026, with prices from $608 to $2,339, a $1,731 spread on the same certified stone. NZ Jewellers lists it at $2,339. 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
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 2556489534
Dimensions5.12 × 5.15 × 3.20 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather
Top View
5.12 mm5.15 mm0.51 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556489534
Side View
Table 56.0%Crown 33°Girdle: MED-STKPavilion 41.8°Culet: NoneDepth 62.4%

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 4
Current: $2,339 USD|Low: $565 USD|High: $2,339 USD|Avg: $949 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
November 6, 2026
Retailer 9$608 USD
Retailer 3$614 USD
Retailer 12$614 USD
Retailer 11$652 USD
Retailer 4$737 USD
Retailer 8$746 USD
Retailer 5$882 USD
Retailer 7$952 USD
Retailer 6$962 USD
Retailer 2$1,083 USD
Retailer 10$1,366 USD
NZ Jewellers$2,339 USD

25 data points across 12 retailers

17 retailers$608 USD to $2,339 USD

A
Cheapest Retailer
-
$608 USD
Retailer 2
-
$614 USD
View
Price last confirmed 8 days ago
A
Retailer 3
-
$614 USD
View
A
Retailer 4
-
$652 USD
View
A
Retailer 5
-
$688 USD
View
Final sale: no returns
A
Retailer 6
-
$700 USD
View
A
Retailer 7
-
$737 USD
View
A
Retailer 8
-
$746 USD
View
A
Retailer 9
-
$758 USD
View
B+
Retailer 10
-
$878 USD
View
B+
Retailer 11
-
$882 USD
View
B+
Retailer 12
-
$952 USD
View
B+
Retailer 13
-
$962 USD
View
B+
Retailer 14
-
$1,083 USD
View
B
Retailer 15
-
$1,366 USD
View
B
Retailer 16
-
$1,596 USD
View
Most Expensive
B
NZ Jewellers
68532be8-a9e4-4f97-8829-47e998172be4 · Nov 4
$2,339 USD
View
16 more retailers have this diamond
Prices start from $608 USDSave up to $1,731 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
0.51ct Round
$608 USD