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Round|Natural|GIA

0.51ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 6562618778

Certificate GIA 6562618778

Diamond specifications and retailer prices

From $658 NZD
As of November 6, 2026
Save $1,896 NZD (74%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $2,555 NZD at Diamond Exchange Canada · As of November 5, 2026
View at Diamond Exchange Canada

About this 0.51ct natural round diamond

This 0.51ct natural round sits in the half to three-quarter carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6562618778. Listed at 10 retailers as of November 5, 2026, with prices from $658 to $2,555, a $1,896 spread on the same certified stone. Diamond Exchange Canada lists it at $2,555. 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
H
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6562618778
Dimensions5.18 × 5.20 × 3.12 mm
L/W Ratio1.00
Top View
5.18 mm5.20 mm0.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6562618778
Side View
Table 59.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 60.1%

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 6
Current: $2,555 NZD|Low: $658 NZD|High: $2,678 NZD|Avg: $1,198 NZD|-4.6%
Diamond Exchange Canada
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 2$658 NZD
Retailer 8$761 NZD
Retailer 10$761 NZD
Retailer 6$810 NZD
Retailer 7$821 NZD
Retailer 3$942 NZD
Retailer 5$1,218 NZD
Retailer 9$1,237 NZD
Retailer 4$1,436 NZD
Diamond Exchange Canada$2,555 NZD

24 data points across 10 retailers

10 retailers$658 NZD to $2,555 NZD

A
Cheapest Retailer
-
$658 NZD
A
Retailer 2
-
$761 NZD
View
A
Retailer 3
-
$761 NZD
View
A
Retailer 4
-
$810 NZD
View
A
Retailer 5
-
$821 NZD
View
A
Retailer 6
-
$942 NZD
View
A
Retailer 7
-
$1,218 NZD
View
B+
Retailer 8
-
$1,237 NZD
View
B+
Retailer 9
-
$1,436 NZD
View
Most Expensive
B
Diamond Exchange Canada
1992904917 · Nov 5
$2,555 NZD
CA$1,967 CAD
View
9 more retailers have this diamond
Prices start from $658 NZDSave up to $1,896 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
$658 NZD