Round|Natural|GIA

0.51ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 6562618778

Certificate GIA 6562618778

Diamond specifications and retailer prices

From $365 USD
As of November 6, 2026
Save $1,051 USD (74%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $1,416 USD 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 $365 to $1,416, a $1,051 spread on the same certified stone. Diamond Exchange Canada lists it at $1,416. 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
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $1,416 USD|Low: $365 USD|High: $1,485 USD|Avg: $664 USD|-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$365 USD
Retailer 8$422 USD
Retailer 10$422 USD
Retailer 6$449 USD
Retailer 7$455 USD
Retailer 3$522 USD
Retailer 5$675 USD
Retailer 9$686 USD
Retailer 4$796 USD
Diamond Exchange Canada$1,416 USD

24 data points across 10 retailers

10 retailers$365 USD to $1,416 USD

A
Cheapest Retailer
-
$365 USD
A
Retailer 2
-
$422 USD
View
A
Retailer 3
-
$422 USD
View
A
Retailer 4
-
$449 USD
View
A
Retailer 5
-
$455 USD
View
A
Retailer 6
-
$522 USD
View
A
Retailer 7
-
$675 USD
View
B+
Retailer 8
-
$686 USD
View
B+
Retailer 9
-
$796 USD
View
Most Expensive
B
Diamond Exchange Canada
1992904917 · Nov 5
$1,416 USD
CA$1,967 CAD
View
9 more retailers have this diamond
Prices start from $365 USDSave up to $1,051 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
$365 USD