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Round|Natural|GIA

0.51ct E SI2 Round Natural Diamond

VG • E/SI2 • GIA 5566193135

Certificate GIA 5566193135

Diamond specifications and retailer prices

From $806 NZD
As of November 5, 2026
Save $1,613 NZD (67%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $3,451 NZD at NZ Jewellers · As of October 11, 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 very-good cut grade and certified by GIA 5566193135. Listed at 15 retailers as of November 4, 2026, with a 200% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.51
Carat
E
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle38°
Pavilion angle40.4°
OriginNatural
Grading LabGIA
CertificateGIA 5566193135
Dimensions4.95 × 5.00 × 3.19 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
4.95 mm5.00 mm0.51 ctE / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5566193135
Side View
Table 58.0%Crown 38°Girdle: STK-THKPavilion 40.4°Culet: NoneDepth 64.1%

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: $806 NZD|Low: $687 NZD|High: $2,519 NZD|Avg: $1,251 NZD|-1.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 5, 2026
Retailer 1$806 NZD
Retailer 2$911 NZD
Retailer 9$937 NZD
Retailer 6$968 NZD
Retailer 8$1,055 NZD
Retailer 3$1,268 NZD
Retailer 7$1,277 NZD
Retailer 10$1,391 NZD
Retailer 5$1,460 NZD
Retailer 4$2,419 NZD

37 data points across 10 retailers

15 retailers$806 NZD to $2,419 NZD

A
Cheapest Retailer
-
$806 NZD
A
Retailer 2
-
$911 NZD
View
A
Retailer 3
-
$937 NZD
View
A
Retailer 4
-
$968 NZD
View
Final sale: no returns
A
Retailer 5
-
$1,055 NZD
View
Retailer 6
-
$1,101 NZD
View
Price last confirmed 26 days ago
Retailer 7
-
$1,185 NZD
View
Price last confirmed 26 days ago
Retailer 8
-
$1,185 NZD
View
Price last confirmed 38 days ago
A
Retailer 9
-
$1,268 NZD
View
Retailer 10
-
$1,270 NZD
View
Price last confirmed 26 days ago
A
Retailer 11
-
$1,277 NZD
View
A
Retailer 12
-
$1,391 NZD
View
B+
Retailer 13
-
$1,460 NZD
View
B
Retailer 14
-
$2,419 NZD
View
Most Expensive
NZ Jewellers
b04396ad-a881-4a45-af99-aece8d5587d5 · Oct 11
$3,451 NZD
$1,940 USD
View
Price last confirmed 26 days ago
14 more retailers have this diamond
Prices start from $806 NZDSave up to $1,613 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
$806 NZD