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Oval|Natural|GIA

0.51ct H SI2 Oval Natural Diamond

VG • H/SI2 • GIA 2517768691

Certificate GIA 2517768691

Diamond specifications and retailer prices

From $545 SGD
As of November 1, 2026
Save $786 SGD (59%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $2,263 SGD at NZ Jewellers · As of August 29, 2026
View at NZ Jewellers

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 SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2517768691. Listed at 17 retailers as of November 1, 2026, with a 144% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.51
Carat
H
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2517768691
Dimensions6.35 × 4.46 × 2.78 mm
L/W Ratio1.42
Top View
6.35 mm4.46 mm0.51 ctH / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryGood
FluorescenceNone
CertificateGIA 2517768691
Side View
Table 57.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 62.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $684 SGD|Low: $545 SGD|High: $1,379 SGD|Avg: $752 SGD|-3.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 9$545 SGD
Retailer 7$563 SGD
Retailer 3$651 SGD
Retailer 10$651 SGD
Retailer 2$673 SGD
Retailer 1$684 SGD
Retailer 4$710 SGD
Retailer 8$714 SGD
Retailer 11$809 SGD
Retailer 6$874 SGD
Retailer 5$1,330 SGD

42 data points across 11 retailers

17 retailers$545 SGD to $1,330 SGD

Retailer 1
-
$523 SGD
Price last confirmed 29 days ago
A
Retailer 2
-
$545 SGD
View
Retailer 3
-
$563 SGD
View
Price last confirmed 38 days ago
Retailer 4
-
$563 SGD
View
Price last confirmed 12 days ago
Retailer 5
-
$563 SGD
View
Price last confirmed 21 days ago
Retailer 6
-
$602 SGD
View
Price last confirmed 28 days ago
Retailer 7
-
$618 SGD
View
Price last confirmed 59 days ago
B+
Retailer 8
-
$651 SGD
View
B+
Retailer 9
-
$673 SGD
View
A
Retailer 10
-
$684 SGD
View
B+
Retailer 11
-
$710 SGD
View
B+
Retailer 12
-
$714 SGD
View
B+
Retailer 13
-
$809 SGD
View
B+
Retailer 14
-
$874 SGD
View
B
Retailer 15
-
$1,330 SGD
View
Retailer 16
-
$2,211 SGD
View
Price last confirmed 38 days ago
Most Expensive
NZ Jewellers
7b192a98-83fe-4b0e-a397-acd2b087e441 · Aug 29
$2,263 SGD
$1,766 USD
View
Price last confirmed 69 days ago
16 more retailers have this diamond
Prices start from $545 SGDSave up to $786 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
$545 SGD