Round|Natural|GIA

0.51ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 6552792499

Certificate GIA 6552792499

Diamond specifications and retailer prices

From $408 USD
As of October 28, 2026
14 retailers carry this diamond
Most expensive: $1,757 USD at NZ Jewellers · As of October 17, 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 6552792499. Listed at 14 retailers as of October 17, 2026. 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 angle34.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 6552792499
Dimensions5.10 × 5.12 × 3.19 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Top View
5.10 mm5.12 mm0.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6552792499
Side View
Table 58.0%Crown 34.5°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 62.5%

Caratlytics Score

No score right now
No retailer has confirmed this stone recently, so we are not scoring it. Prices below are as of the date shown.

Price History

Last verified: Oct 28
Current: $666 USD|Low: $408 USD|High: $1,320 USD|Avg: $647 USD|-1.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 29, 2026
Retailer 7$408 USD
Retailer 3$473 USD
Retailer 11$476 USD
Retailer 2$512 USD
Retailer 4$544 USD
Retailer 10$584 USD
Retailer 1$666 USD
Retailer 8$679 USD
Retailer 6$756 USD
Retailer 9$774 USD
Retailer 5$1,268 USD

29 data points across 11 retailers

14 retailers$408 USD to $1,757 USD

Retailer 1
-
$408 USD
Price last confirmed 9 days ago
Retailer 2
-
$473 USD
View
Price last confirmed 7 days ago
Retailer 3
-
$476 USD
View
Price last confirmed 11 days ago
Retailer 4
-
$544 USD
View
Price last confirmed 8 days ago
Retailer 5
-
$584 USD
View
Price last confirmed 10 days ago
Retailer 6
-
$588 USD
View
Price last confirmed 53 days ago
Retailer 7
-
$604 USD
View
Price last confirmed 22 days ago
Retailer 8
-
$666 USD
View
Price last confirmed 8 days ago
Retailer 9
-
$678 USD
View
Price last confirmed 53 days ago
Retailer 10
-
$679 USD
View
Price last confirmed 9 days ago
Retailer 11
-
$756 USD
View
Price last confirmed 9 days ago
Retailer 12
-
$774 USD
View
Price last confirmed 11 days ago
Retailer 13
-
$1,268 USD
View
Price last confirmed 8 days ago
Most Expensive
NZ Jewellers
7da7f1cb-ed9f-4423-a516-d260103dff18 · Oct 17
$1,757 USD
View
Price last confirmed 20 days ago
13 more retailers have this diamond

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.

0.51ct Round
$408 USD