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Round|Natural|GIA

0.51ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 2567223287

Certificate GIA 2567223287

Diamond specifications and retailer prices

From $379 USD
As of November 6, 2026
Save $1,250 USD (77%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,629 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 H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2567223287. Listed at 16 retailers as of November 4, 2026, with prices from $379 to $1,629, a $1,250 spread on the same certified stone. NZ Jewellers lists it at $1,629. 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
FluorescenceMedium
Crown angle34.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2567223287
Dimensions5.11 × 5.13 × 3.13 mm
L/W Ratio1.00
Star length50%
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Crystal
Top View
5.11 mm5.13 mm0.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2567223287
Side View
Table 59.0%Crown 34.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.1%

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: $1,629 USD|Low: $379 USD|High: $1,684 USD|Avg: $696 USD|-3.3%
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
November 6, 2026
Retailer 2$379 USD
Retailer 15$435 USD
Retailer 5$479 USD
Retailer 6$519 USD
Retailer 9$540 USD
Retailer 7$550 USD
Retailer 14$559 USD
Retailer 4$599 USD
Retailer 10$599 USD
Retailer 13$641 USD
Retailer 11$654 USD
Retailer 8$668 USD
Retailer 12$697 USD
Retailer 3$1,197 USD
NZ Jewellers$1,629 USD

32 data points across 15 retailers

16 retailers$379 USD to $1,629 USD

A
Cheapest Retailer
-
$379 USD
A
Retailer 2
-
$435 USD
View
A
Retailer 3
-
$479 USD
View
Final sale: no returns
A
Retailer 4
-
$519 USD
View
A
Retailer 5
-
$540 USD
View
A
Retailer 6
-
$550 USD
View
A
Retailer 7
-
$559 USD
View
A
Retailer 8
-
$599 USD
View
A
Retailer 9
-
$599 USD
View
A
Retailer 10
-
$641 USD
View
A
Retailer 11
-
$654 USD
View
A
Retailer 12
-
$668 USD
View
B+
Retailer 13
-
$677 USD
View
B+
Retailer 14
-
$697 USD
View
B
Retailer 15
-
$1,197 USD
View
Most Expensive
B
NZ Jewellers
cb82a508-45f8-47d3-b045-88e028bda487 · Nov 4
$1,629 USD
View
15 more retailers have this diamond
Prices start from $379 USDSave up to $1,250 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
$379 USD