Round|Natural|GIA

0.51ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 7566014304

Certificate GIA 7566014304

Diamond specifications and retailer prices

From $635 USD
As of November 4, 2026
Save $754 USD (54%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $2,383 USD at NZ Jewellers · As of October 30, 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 H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 7566014304. Listed at 15 retailers as of November 4, 2026, with a 119% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 7566014304
Dimensions5.14 × 5.15 × 3.12 mm
L/W Ratio1.00
Culet sizeNone
Top View
5.14 mm5.15 mm0.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7566014304
Side View
Table 59.0%Crown 33.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 60.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $2,383 USD|Low: $635 USD|High: $2,383 USD|Avg: $1,082 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 4$635 USD
Retailer 3$650 USD
Retailer 12$688 USD
Retailer 11$715 USD
Retailer 10$794 USD
Retailer 7$899 USD
Retailer 5$965 USD
Retailer 2$977 USD
Retailer 6$1,071 USD
Retailer 8$1,389 USD
Retailer 9$1,955 USD
NZ Jewellers$2,383 USD

37 data points across 12 retailers

15 retailers$635 USD to $1,389 USD

A
Cheapest Retailer
-
$635 USD
Final sale: no returns
A
Retailer 2
-
$650 USD
View
A
Retailer 3
-
$676 USD
View
Retailer 4
-
$688 USD
View
Price last confirmed 8 days ago
B+
Retailer 5
-
$715 USD
View
Retailer 6
-
$794 USD
View
Price last confirmed 10 days ago
B+
Retailer 7
-
$796 USD
View
B+
Retailer 8
-
$839 USD
View
B
Retailer 9
-
$899 USD
View
B+
Retailer 10
-
$965 USD
View
B+
Retailer 11
-
$977 USD
View
B
Retailer 12
-
$1,071 USD
View
B
Retailer 13
-
$1,389 USD
View
Retailer 14
-
$1,955 USD
View
Price last confirmed 9 days ago
Most Expensive
NZ Jewellers
059eba3d-1a56-451c-8931-93f566e049ed · Oct 30
$2,383 USD
View
Price under review
14 more retailers have this diamond
Prices start from $635 USDSave up to $754 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
$635 USD