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Oval|Natural|GIA

1.51ct K SI2 Oval Natural Diamond

EX • K/SI2 • GIA 2245085602

Certificate GIA 2245085602

Diamond specifications and retailer prices

From $2,444 SGD
As of November 6, 2026
Save $4,721 SGD (66%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $7,165 SGD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.51ct natural oval diamond

This 1.51ct natural oval sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2245085602. Listed at 12 retailers as of November 5, 2026, with prices from $2,444 to $7,165, a $4,721 spread on the same certified stone. NZ Jewellers lists it at $7,165. 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

1.51
Carat
K
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Pavilion angle38.75°
OriginNatural
Grading LabGIA
CertificateGIA 2245085602
Dimensions9.01 × 6.34 × 4.10 mm
L/W Ratio1.42
Key to symbols
Crystal, Cloud
Top View
9.01 mm6.34 mm1.51 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2245085602
Side View
Table 63.0%CrownGirdle: STK-THKPavilion 38.75°Culet: NoneDepth 64.6%

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: $7,165 SGD|Low: $2,444 SGD|High: $7,622 SGD|Avg: $4,309 SGD|-6.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 2$2,444 SGD
Retailer 10$3,159 SGD
Retailer 5$3,305 SGD
Retailer 6$3,399 SGD
Retailer 4$3,427 SGD
Retailer 12$3,559 SGD
Retailer 3$3,737 SGD
Retailer 8$4,052 SGD
Retailer 7$4,216 SGD
Retailer 11$5,207 SGD
Retailer 9$6,004 SGD
NZ Jewellers$7,165 SGD

24 data points across 12 retailers

12 retailers$2,444 SGD to $7,165 SGD

A
Cheapest Retailer
-
$2,444 SGD
A
Retailer 2
-
$3,159 SGD
View
A
Retailer 3
-
$3,305 SGD
View
A
Retailer 4
-
$3,399 SGD
View
A
Retailer 5
-
$3,427 SGD
View
A
Retailer 6
-
$3,559 SGD
View
A
Retailer 7
-
$3,737 SGD
View
A
Retailer 8
-
$4,052 SGD
View
A
Retailer 9
-
$4,216 SGD
View
B+
Retailer 10
-
$5,207 SGD
View
B+
Retailer 11
-
$6,004 SGD
View
Most Expensive
B
NZ Jewellers
06407ec2-9e67-4908-8adb-4ab5f11a71bc · Nov 5
$7,165 SGD
$5,591 USD
View
11 more retailers have this diamond
Prices start from $2,444 SGDSave up to $4,721 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
1.51ct Oval
$2,444 SGD