Oval|Natural|GIA

1.51ct J SI1 Oval Natural Diamond

EX • J/SI1 • GIA 1515314942

Certificate GIA 1515314942

Diamond specifications and retailer prices

From $5,966 SGD
₹444,419 INR
As of November 1, 2026
Save $5,641 SGD (49%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $13,178 SGD at NZ Jewellers · As of September 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 1515314942. Listed at 21 retailers as of November 1, 2026, with a 95% 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

1.51
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle37.19°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1515314942
Dimensions9.00 × 6.43 × 4.04 mm
L/W Ratio1.40
Culet sizeNone
Top View
9.00 mm6.43 mm1.51 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1515314942
Side View
Table 60.0%Crown 37.19°Girdle: STK-THKPavilion 41°Culet: NoneDepth 62.7%

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: Nov 1
Current: $13,178 SGD|Low: $5,966 SGD|High: $13,178 SGD|Avg: $8,675 SGD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 2$5,966 SGD
Retailer 3$6,868 SGD
Retailer 9$7,272 SGD
Retailer 5$7,559 SGD
Retailer 10$7,830 SGD
Retailer 11$7,879 SGD
Retailer 7$8,610 SGD
Retailer 6$9,680 SGD
Retailer 8$11,416 SGD
Retailer 4$11,607 SGD
NZ Jewellers$13,178 SGD

32 data points across 11 retailers

21 retailers$5,966 SGD to $11,607 SGD

B+
Cheapest Retailer
-
$5,966 SGD
₹444,419 INR
B+
Retailer 2
-
$6,667 SGD
$5,215 USD
View
B
Retailer 3
-
$6,868 SGD
$5,372 USD
View
B
Retailer 4
-
$6,871 SGD
$5,375 USD
View
B
Retailer 5
-
$6,933 SGD
$5,423 USD
View
B+
Retailer 6
-
$7,272 SGD
$5,688 USD
View
Final sale: no returns
B+
Retailer 7
-
$7,338 SGD
$5,740 USD
View
B+
Retailer 8
-
$7,559 SGD
£4,656 GBP
View
Retailer 9
-
$7,830 SGD
A$9,422 AUD
View
Price last confirmed 28 days ago
Retailer 10
-
$7,879 SGD
$6,163 USD
View
Price last confirmed 40 days ago
Retailer 11
-
$7,879 SGD
$6,163 USD
View
Price last confirmed 25 days ago
Retailer 12
-
$7,879 SGD
$6,163 USD
View
Price last confirmed 20 days ago
B
Retailer 13
-
$8,079 SGD
$6,320 USD
View
B
Retailer 14
-
$8,610 SGD
€6,414 EUR
View
B
Retailer 15
-
$8,806 SGD
$6,888 USD
View
Retailer 16
-
$9,091 SGD
$7,111 USD
View
Price last confirmed 40 days ago
Retailer 17
-
$9,091 SGD
$7,111 USD
View
Price last confirmed 23 days ago
B
Retailer 18
-
$9,680 SGD
ZAR 122,326 ZAR
View
B
Retailer 19
-
$11,416 SGD
$8,930 USD
View
B
Retailer 20
-
$11,607 SGD
£7,149 GBP
View
Most Expensive
NZ Jewellers
27ef9794-3a8d-43b7-9091-dffc4b51fe26 · Sep 30
$13,178 SGD
$10,308 USD
View
Price last confirmed 32 days ago
20 more retailers have this diamond
Prices start from $5,966 SGDSave up to $5,641 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+
1.51ct Oval
$5,966 SGD