Marquise|Natural|GIA

0.51ct H SI1 Marquise Natural Diamond

ID • H/SI1 • GIA 2547417925

Certificate GIA 2547417925

Diamond specifications and retailer prices

From €730 EUR
£645 GBP
As of October 28, 2026
8 retailers carry this diamond
Most expensive: €1,377 EUR at MOH London · As of October 26, 2026
View at MOH London

About this 0.51ct natural marquise diamond

This 0.51ct natural marquise sits in the half to three-quarter carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2547417925. Listed at 8 retailers as of October 28, 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
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2547417925
Dimensions8.00 × 4.13 × 2.65 mm
L/W Ratio1.94
Top View
8.00 mm4.13 mm0.51 ctH / SI1
OriginNatural
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2547417925
Side View
Table 61.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 64.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: €1,377 EUR|Low: €596 EUR|High: €1,405 EUR|Avg: €861 EUR|-1.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 28, 2026
Retailer 5€596 EUR
Retailer 6€713 EUR
Retailer 9€727 EUR
Retailer 2€730 EUR
Retailer 8€777 EUR
Retailer 3€844 EUR
Retailer 7€904 EUR
Retailer 4€917 EUR
MOH London€1,377 EUR

37 data points across 9 retailers

8 retailers

Retailer 1
-
€596 EUR
$668 USD
Price last confirmed 8 days ago
Retailer 2
-
€713 EUR
$800 USD
View
Price last confirmed 8 days ago
B+
Retailer 3
-
€730 EUR
£645 GBP
View
Retailer 4
-
€777 EUR
£686 GBP
View
Price last confirmed 37 days ago
Retailer 5
-
€844 EUR
View
Price last confirmed 7 days ago
Retailer 6
-
€904 EUR
A$1,560 AUD
View
Price last confirmed 30 days ago
Retailer 7
-
€917 EUR
ZAR 16,615 ZAR
View
Price last confirmed 7 days ago
Most Expensive
MOH London
FE39B73A6 · Oct 26
€1,377 EUR
£1,216 GBP
View
Price last confirmed 7 days ago
7 more retailers have this diamond
Prices start from €730 EUR

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.

B+
0.51ct Marquise
€730 EUR