Oval|Natural|GIA

0.51ct H SI1 Oval Natural Diamond

EX • H/SI1 • GIA 5556394112

Certificate GIA 5556394112

Diamond specifications and retailer prices

From €483 EUR
As of November 6, 2026
Save €482 EUR (50%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: €1,989 EUR at Diamond Exchange Canada · As of November 5, 2026
View at Diamond Exchange Canada

About this 0.51ct natural oval diamond

This 0.51ct natural oval 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 5556394112. Listed at 10 retailers as of November 6, 2026, with a 100% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5556394112
Dimensions6.57 × 4.47 × 2.70 mm
L/W Ratio1.47
Culet sizeNone
Key to symbols
Cloud
Top View
6.57 mm4.47 mm0.51 ctH / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 5556394112
Side View
Table 63.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 60.3%

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: €943 EUR|Low: €439 EUR|High: €2,160 EUR|Avg: €966 EUR|+1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 4€483 EUR
Retailer 5€665 EUR
Retailer 8€720 EUR
Retailer 2€828 EUR
Retailer 3€891 EUR
Retailer 1€943 EUR
Retailer 6€965 EUR
Retailer 9€1,044 EUR
Retailer 7€2,160 EUR

43 data points across 9 retailers

10 retailers€483 EUR to €965 EUR

A
Cheapest Retailer
-
€483 EUR
Final sale: no returns
B+
Retailer 2
-
€637 EUR
View
B+
Retailer 3
-
€665 EUR
View
B+
Retailer 4
-
€768 EUR
View
B
Retailer 5
-
€828 EUR
View
B
Retailer 6
-
€877 EUR
View
B
Retailer 7
-
€891 EUR
View
B
Retailer 8
-
€943 EUR
View
B
Retailer 9
-
€965 EUR
View
Most Expensive
Diamond Exchange Canada
1962132016 · Nov 5
€1,989 EUR
CA$3,084 CAD
View
Price under review
9 more retailers have this diamond
Prices start from €483 EURSave up to €482 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.

A
0.51ct Oval
€483 EUR