Round|Natural|GIA

0.51ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 6552792499

Certificate GIA 6552792499

Diamond specifications and retailer prices

From £303 GBP
As of October 28, 2026
14 retailers carry this diamond
Most expensive: £1,305 GBP 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
Colour
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: £495 GBP|Low: £303 GBP|High: £981 GBP|Avg: £481 GBP|-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£303 GBP
Retailer 3£351 GBP
Retailer 11£354 GBP
Retailer 2£380 GBP
Retailer 4£404 GBP
Retailer 10£434 GBP
Retailer 1£495 GBP
Retailer 8£504 GBP
Retailer 6£562 GBP
Retailer 9£575 GBP
Retailer 5£942 GBP

29 data points across 11 retailers

14 retailers£303 GBP to £1,305 GBP

Retailer 1
-
£303 GBP
Price last confirmed 9 days ago
Retailer 2
-
£351 GBP
View
Price last confirmed 7 days ago
Retailer 3
-
£354 GBP
View
Price last confirmed 11 days ago
Retailer 4
-
£404 GBP
View
Price last confirmed 8 days ago
Retailer 5
-
£434 GBP
View
Price last confirmed 10 days ago
Retailer 6
-
£437 GBP
View
Price last confirmed 53 days ago
Retailer 7
-
£449 GBP
View
Price last confirmed 22 days ago
Retailer 8
-
£495 GBP
View
Price last confirmed 8 days ago
Retailer 9
-
£504 GBP
View
Price last confirmed 53 days ago
Retailer 10
-
£504 GBP
View
Price last confirmed 9 days ago
Retailer 11
-
£562 GBP
View
Price last confirmed 9 days ago
Retailer 12
-
£575 GBP
View
Price last confirmed 11 days ago
Retailer 13
-
£942 GBP
View
Price last confirmed 8 days ago
Most Expensive
NZ Jewellers
7da7f1cb-ed9f-4423-a516-d260103dff18 · Oct 17
£1,305 GBP
$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
£303 GBP