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Oval|Natural|GIA

1.51ct J SI1 Oval Natural Diamond

ID • J/SI1 • GIA 6535853653

Certificate GIA 6535853653

Diamond specifications and retailer prices

From $4,607 SGD
$3,604 USD
As of October 31, 2026
Save $4,972 SGD (52%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $9,579 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 J 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 6535853653. Listed at 21 retailers as of October 30, 2026, with prices from $4,607 to $9,579, a $4,972 spread on the same certified stone. NZ Jewellers lists it at $9,579. 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
J
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35.58°
OriginNatural
Grading LabGIA
CertificateGIA 6535853653
Dimensions9.12 × 6.46 × 4.07 mm
L/W Ratio1.41
Top View
9.12 mm6.46 mm1.51 ctJ / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6535853653
Side View
Table 60.0%Crown 35.58°Girdle: SLI-THKPavilionCulet: NoneDepth 63.0%

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: $9,579 SGD|Low: $4,446 SGD|High: $9,579 SGD|Avg: $6,027 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
Retailer 20
November 1, 2026
Retailer 11$4,607 SGD
Retailer 7$4,837 SGD
Retailer 2$4,915 SGD
Retailer 3$5,013 SGD
Retailer 8$5,075 SGD
Retailer 9$5,216 SGD
Retailer 13$5,290 SGD
Retailer 18$5,498 SGD
Retailer 19$5,498 SGD
Retailer 20$5,498 SGD
Retailer 15$5,625 SGD
Retailer 6$5,688 SGD
Retailer 10$5,702 SGD
Retailer 4$5,815 SGD
Retailer 12$5,966 SGD
Retailer 17$6,223 SGD
Retailer 5$6,345 SGD
Retailer 16$6,758 SGD
Retailer 14$8,758 SGD
NZ Jewellers$9,579 SGD

24 data points across 20 retailers

21 retailers$4,607 SGD to $9,579 SGD

A
Cheapest Retailer
-
$4,607 SGD
$3,604 USD
A
Retailer 2
-
$4,837 SGD
$3,784 USD
View
A
Retailer 3
-
$4,915 SGD
$3,845 USD
View
A
Retailer 4
-
$5,013 SGD
$3,921 USD
View
A
Retailer 5
-
$5,075 SGD
$3,970 USD
View
Final sale: no returns
A
Retailer 6
-
$5,216 SGD
$4,080 USD
View
A
Retailer 7
-
$5,290 SGD
£3,258 GBP
View
B+
Retailer 8
-
$5,498 SGD
$4,301 USD
View
B+
Retailer 9
-
$5,498 SGD
$4,301 USD
View
B+
Retailer 10
-
$5,498 SGD
$4,301 USD
View
B+
Retailer 11
-
$5,625 SGD
£3,464 GBP
View
B+
Retailer 12
-
$5,688 SGD
$4,449 USD
View
B+
Retailer 13
-
$5,702 SGD
$4,460 USD
View
B+
Retailer 14
-
$5,815 SGD
$4,549 USD
View
Retailer 15
-
$5,966 SGD
A$7,180 AUD
View
Price last confirmed 23 days ago
B+
Retailer 16
-
$6,223 SGD
€4,636 EUR
View
B+
Retailer 17
-
$6,345 SGD
$4,963 USD
View
B+
Retailer 18
-
$6,758 SGD
ZAR 85,406 ZAR
View
B
Retailer 19
-
$8,758 SGD
£5,394 GBP
View
Retailer 20
-
$9,091 SGD
$7,111 USD
View
Price last confirmed 9 days ago
Most Expensive
B
NZ Jewellers
9d590c74-603f-4327-ba15-8433d252e1d6 · Oct 30
$9,579 SGD
$7,493 USD
View
20 more retailers have this diamond
Prices start from $4,607 SGDSave up to $4,972 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
$4,607 SGD