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Oval|Natural|GIA

1.50ct I SI1 Oval Natural Diamond

EX • I/SI1 • GIA 2557796851

Certificate GIA 2557796851

Diamond specifications and retailer prices

From $4,516 SGD
HK$27,600 HKD
As of November 1, 2026
Save $6,405 SGD (59%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $10,921 SGD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.5ct natural oval diamond

This 1.5ct natural oval sits in the one-and-a-half to two carat band, graded I 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 2557796851. Listed at 10 retailers as of October 30, 2026, with prices from $4,516 to $10,921, a $6,405 spread on the same certified stone. NZ Jewellers lists it at $10,921. 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

1.50
Carat
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle35.73°
OriginNatural
Grading LabGIA
CertificateGIA 2557796851
Dimensions8.80 × 6.25 × 4.03 mm
L/W Ratio1.41
Key to symbols
Crystal, Feather, Needle
Top View
8.80 mm6.25 mm1.50 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557796851
Side View
Table 56.0%CrownGirdle: STK-THKPavilion 35.73°Culet: NoneDepth 64.4%

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 1
Current: $10,921 SGD|Low: $4,516 SGD|High: $11,446 SGD|Avg: $7,080 SGD|-4.6%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 2$4,516 SGD
Retailer 3$5,205 SGD
Retailer 5$5,524 SGD
Retailer 9$5,851 SGD
Retailer 4$6,154 SGD
Retailer 8$6,269 SGD
Retailer 10$6,671 SGD
Retailer 6$7,120 SGD
Retailer 7$10,039 SGD
NZ Jewellers$10,921 SGD

40 data points across 10 retailers

10 retailers$4,516 SGD to $10,921 SGD

A
Cheapest Retailer
-
$4,516 SGD
HK$27,600 HKD
A
Retailer 2
-
$5,205 SGD
€3,878 EUR
View
A
Retailer 3
-
$5,524 SGD
$4,321 USD
View
A
Retailer 4
-
$5,851 SGD
View
A
Retailer 5
-
$6,154 SGD
$4,814 USD
View
A
Retailer 6
-
$6,269 SGD
$4,904 USD
View
B+
Retailer 7
-
$6,671 SGD
A$8,028 AUD
View
B+
Retailer 8
-
$7,120 SGD
€5,304 EUR
View
B+
Retailer 9
-
$10,039 SGD
£6,183 GBP
View
Most Expensive
B
NZ Jewellers
565532c0-953b-4f2d-aed4-fc30a2b45f0d · Oct 30
$10,921 SGD
$8,543 USD
View
9 more retailers have this diamond
Prices start from $4,516 SGDSave up to $6,405 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
1.50ct Oval
$4,516 SGD