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Oval|Natural|GIA

0.51ct H SI1 Oval Natural Diamond

EX • H/SI1 • GIA 5556394112

Certificate GIA 5556394112

Diamond specifications and retailer prices

From $691 SGD
As of November 6, 2026
Save $690 SGD (50%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $2,846 SGD 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 12 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: $1,185 SGD|Low: $628 SGD|High: $3,091 SGD|Avg: $1,415 SGD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 7, 2026
Retailer 6$691 SGD
Retailer 3$846 SGD
Retailer 7$951 SGD
Retailer 1$1,185 SGD
Retailer 5$1,275 SGD
Retailer 4$1,350 SGD
Retailer 2$1,371 SGD
Retailer 8$1,380 SGD
Retailer 9$3,091 SGD

43 data points across 9 retailers

12 retailers$691 SGD to $1,380 SGD

A
Cheapest Retailer
-
$691 SGD
Final sale: no returns
B+
Retailer 2
-
$846 SGD
View
B+
Retailer 3
-
$911 SGD
View
B+
Retailer 4
-
$951 SGD
View
B+
Retailer 5
-
$1,098 SGD
View
B
Retailer 6
-
$1,185 SGD
View
B
Retailer 7
-
$1,255 SGD
View
B
Retailer 8
-
$1,275 SGD
View
B
Retailer 9
-
$1,350 SGD
View
B
Retailer 10
-
$1,371 SGD
View
B
Retailer 11
-
$1,380 SGD
View
Most Expensive
Diamond Exchange Canada
1962132016 · Nov 5
$2,846 SGD
CA$3,084 CAD
View
Price under review
11 more retailers have this diamond
Prices start from $691 SGDSave up to $690 SGD

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
$691 SGD