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Oval|Natural|GIA

1.51ct I SI2 Oval Natural Diamond

ID • I/SI2 • GIA 1555553685

Certificate GIA 1555553685

Diamond specifications and retailer prices

From $5,565 SGD
$4,353 USD
As of October 31, 2026
Save $6,442 SGD (54%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $12,007 SGD at NZ Jewellers · As of October 30, 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1555553685. Listed at 19 retailers as of October 30, 2026, with prices from $5,565 to $12,007, a $6,442 spread on the same certified stone. NZ Jewellers lists it at $12,007. 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
I
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle37.83°
OriginNatural
Grading LabGIA
CertificateGIA 1555553685
Dimensions9.39 × 6.15 × 3.91 mm
L/W Ratio1.53
Girdle conditionVery Thick
Key to symbols
Twinning Wisp, Crystal, Feather, Indented Natural, Needle, Natural
Top View
9.39 mm6.15 mm1.51 ctI / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1555553685
Side View
Table 63.0%Crown 37.83°Girdle: MED-VTKPavilionCulet: NoneDepth 63.6%

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: Oct 31
Current: $12,007 SGD|Low: $5,502 SGD|High: $12,007 SGD|Avg: $7,275 SGD
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
November 1, 2026
Retailer 17$5,548 SGD
Retailer 15$5,565 SGD
Retailer 5$5,671 SGD
Retailer 4$6,003 SGD
Retailer 6$6,053 SGD
Retailer 10$6,440 SGD
Retailer 16$6,503 SGD
Retailer 18$6,503 SGD
Retailer 19$6,503 SGD
Retailer 11$6,836 SGD
Retailer 2$7,002 SGD
Retailer 12$7,003 SGD
Retailer 8$7,287 SGD
Retailer 9$7,287 SGD
Retailer 3$7,504 SGD
Retailer 7$7,530 SGD
Retailer 13$8,124 SGD
Retailer 14$11,495 SGD
NZ Jewellers$12,007 SGD

37 data points across 19 retailers

19 retailers$5,565 SGD to $12,007 SGD

Retailer 1
-
$5,548 SGD
$4,340 USD
Price last confirmed 14 days ago
A
Retailer 2
-
$5,565 SGD
$4,353 USD
View
A
Retailer 3
-
$5,671 SGD
$4,436 USD
View
A
Retailer 4
-
$6,003 SGD
$4,696 USD
View
Final sale: no returns
A
Retailer 5
-
$6,053 SGD
$4,735 USD
View
A
Retailer 6
-
$6,440 SGD
$5,038 USD
View
A
Retailer 7
-
$6,503 SGD
$5,087 USD
View
A
Retailer 8
-
$6,503 SGD
$5,087 USD
View
A
Retailer 9
-
$6,503 SGD
$5,087 USD
View
B+
Retailer 10
-
$6,836 SGD
$5,347 USD
View
B+
Retailer 11
-
$7,002 SGD
£4,313 GBP
View
B+
Retailer 12
-
$7,003 SGD
£4,314 GBP
View
B+
Retailer 13
-
$7,287 SGD
$5,700 USD
View
B+
Retailer 14
-
$7,287 SGD
$5,700 USD
View
B+
Retailer 15
-
$7,504 SGD
$5,870 USD
View
B+
Retailer 16
-
$7,530 SGD
$5,890 USD
View
B+
Retailer 17
-
$8,124 SGD
€6,052 EUR
View
B
Retailer 18
-
$11,495 SGD
£7,080 GBP
View
Most Expensive
B
NZ Jewellers
5043f498-1c39-423c-940e-e73d23376a8c · Oct 30
$12,007 SGD
$9,392 USD
View
18 more retailers have this diamond
Prices start from $5,565 SGDSave up to $6,442 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
$5,565 SGD