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Oval|Natural|GIA

0.51ct D SI1 Oval Natural Diamond

EX • D/SI1 • GIA 5516455267

Certificate GIA 5516455267

Diamond specifications and retailer prices

From $760 SGD
₹56,610 INR
As of October 31, 2026
Save $1,781 SGD (70%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $3,201 SGD at NZ Jewellers · As of October 30, 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5516455267. Listed at 20 retailers as of October 28, 2026, with a 234% 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
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5516455267
Dimensions6.77 × 4.41 × 2.68 mm
L/W Ratio1.54
Top View
6.77 mm4.41 mm0.51 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5516455267
Side View
Table 60.0%CrownGirdle: THN-THKPavilionCulet: NoneDepth 60.8%

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: Oct 31
Current: $1,869 SGD|Low: $716 SGD|High: $2,549 SGD|Avg: $1,319 SGD|-0.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 1, 2026
Retailer 6$760 SGD
Retailer 4$910 SGD
Retailer 10$942 SGD
Retailer 2$1,020 SGD
Retailer 12$1,177 SGD
Retailer 5$1,228 SGD
Retailer 3$1,234 SGD
Retailer 7$1,444 SGD
Retailer 11$1,535 SGD
Retailer 8$1,575 SGD
Retailer 1$1,869 SGD
Retailer 9$2,541 SGD

33 data points across 12 retailers

20 retailers$760 SGD to $2,541 SGD

A
Cheapest Retailer
-
$760 SGD
₹56,610 INR
A
Retailer 2
-
$910 SGD
$712 USD
View
B+
Retailer 3
-
$942 SGD
$737 USD
View
Final sale: no returns
B+
Retailer 4
-
$1,020 SGD
$798 USD
View
B+
Retailer 5
-
$1,020 SGD
$798 USD
View
B+
Retailer 6
-
$1,036 SGD
$810 USD
View
B+
Retailer 7
-
$1,060 SGD
$829 USD
View
B+
Retailer 8
-
$1,121 SGD
$877 USD
View
B+
Retailer 9
-
$1,177 SGD
$921 USD
View
B+
Retailer 10
-
$1,190 SGD
$931 USD
View
B+
Retailer 11
-
$1,228 SGD
£756 GBP
View
B+
Retailer 12
-
$1,234 SGD
$965 USD
View
Retailer 13
-
$1,268 SGD
£781 GBP
View
Price last confirmed 31 days ago
B+
Retailer 14
-
$1,376 SGD
$1,076 USD
View
B+
Retailer 15
-
$1,444 SGD
€1,076 EUR
View
Retailer 16
-
$1,535 SGD
A$1,847 AUD
View
Price last confirmed 28 days ago
B
Retailer 17
-
$1,575 SGD
ZAR 19,909 ZAR
View
B
Retailer 18
-
$1,869 SGD
£1,151 GBP
View
B
Retailer 19
-
$2,541 SGD
£1,565 GBP
View
Most Expensive
NZ Jewellers
806b45fa-fdfa-4fed-8ef1-fa50bf360653 · Oct 30
$3,201 SGD
$2,504 USD
View
Price under review
19 more retailers have this diamond
Prices start from $760 SGDSave up to $1,781 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
$760 SGD