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Oval|Natural|GIA

0.51ct D SI1 Oval Natural Diamond

EX • D/SI1 • GIA 1493017308

Certificate GIA 1493017308

Diamond specifications and retailer prices

From $1,084 SGD
$848 USD
As of October 29, 2026
Save $1,307 SGD (55%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $3,167 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 1493017308. Listed at 20 retailers as of October 29, 2026, with a 121% 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
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1493017308
Dimensions6.36 × 4.56 × 2.86 mm
L/W Ratio1.39
Culet sizeNone
Key to symbols
Crystal
Top View
6.36 mm4.56 mm0.51 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1493017308
Side View
Table 62.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 62.8%

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 29
Current: $3,167 SGD|Low: $1,084 SGD|High: $3,215 SGD|Avg: $1,571 SGD|-1.5%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
October 31, 2026
Retailer 9$1,084 SGD
Retailer 16$1,087 SGD
Retailer 8$1,154 SGD
Retailer 5$1,176 SGD
Retailer 11$1,176 SGD
Retailer 6$1,190 SGD
Retailer 17$1,222 SGD
Retailer 7$1,304 SGD
Retailer 4$1,358 SGD
Retailer 18$1,374 SGD
Retailer 3$1,432 SGD
Retailer 19$1,432 SGD
Retailer 20$1,483 SGD
Retailer 2$1,522 SGD
Retailer 10$1,712 SGD
Retailer 13$1,729 SGD
Retailer 12$1,749 SGD
Retailer 14$2,004 SGD
Retailer 15$2,392 SGD
NZ Jewellers$3,167 SGD

39 data points across 20 retailers

20 retailers$1,084 SGD to $2,392 SGD

B+
Cheapest Retailer
-
$1,084 SGD
$848 USD
Final sale: no returns
Retailer 2
-
$1,087 SGD
$850 USD
View
Price last confirmed 9 days ago
B+
Retailer 3
-
$1,154 SGD
$903 USD
View
B+
Retailer 4
-
$1,176 SGD
$920 USD
View
B+
Retailer 5
-
$1,176 SGD
$920 USD
View
B+
Retailer 6
-
$1,190 SGD
$931 USD
View
B+
Retailer 7
-
$1,222 SGD
$956 USD
View
B+
Retailer 8
-
$1,304 SGD
$1,020 USD
View
B+
Retailer 9
-
$1,358 SGD
$1,062 USD
View
B+
Retailer 10
-
$1,374 SGD
$1,075 USD
View
B+
Retailer 11
-
$1,432 SGD
$1,120 USD
View
B+
Retailer 12
-
$1,432 SGD
$1,120 USD
View
B+
Retailer 13
-
$1,483 SGD
$1,160 USD
View
B+
Retailer 14
-
$1,522 SGD
£938 GBP
View
B
Retailer 15
-
$1,712 SGD
$1,339 USD
View
B
Retailer 16
-
$1,729 SGD
€1,288 EUR
View
Retailer 17
-
$1,749 SGD
A$2,105 AUD
View
Price last confirmed 26 days ago
B
Retailer 18
-
$2,004 SGD
ZAR 25,330 ZAR
View
B
Retailer 19
-
$2,392 SGD
£1,473 GBP
View
Most Expensive
NZ Jewellers
3360d27d-0a55-485c-bf6c-69e6653dbffb · Oct 30
$3,167 SGD
$2,477 USD
View
Price under review
19 more retailers have this diamond
Prices start from $1,084 SGDSave up to $1,307 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.

B+
0.51ct Oval
$1,084 SGD