Oval|Natural|GIA

1.30ct J SI1 Oval Natural Diamond

EX • J/SI1 • GIA 6512704490

Certificate GIA 6512704490

Diamond specifications and retailer prices

From $3,424 SGD
₹255,067 INR
As of November 1, 2026
Save $4,231 SGD (55%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $8,948 SGD at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 1.3ct natural oval diamond

This 1.3ct natural oval sits in the one-and-a-quarter to one-and-a-half 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 6512704490. Listed at 21 retailers as of October 29, 2026, with a 124% 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

1.30
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle40.39°
Pavilion angle38.8°
OriginNatural
Grading LabGIA
CertificateGIA 6512704490
Dimensions8.51 × 6.12 × 3.78 mm
L/W Ratio1.39
Top View
8.51 mm6.12 mm1.30 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6512704490
Side View
Table 59.0%Crown 40.39°Girdle: STK-THKPavilion 38.8°Culet: NoneDepth 61.8%

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: $8,948 SGD|Low: $3,424 SGD|High: $8,948 SGD|Avg: $5,774 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
November 1, 2026
Retailer 2$3,424 SGD
Retailer 5$3,888 SGD
Retailer 17$4,041 SGD
Retailer 4$4,096 SGD
Retailer 6$4,202 SGD
Retailer 15$4,220 SGD
Retailer 3$4,379 SGD
Retailer 13$4,738 SGD
Retailer 10$4,758 SGD
Retailer 16$4,852 SGD
Retailer 9$5,135 SGD
Retailer 12$5,330 SGD
Retailer 8$5,506 SGD
Retailer 11$5,596 SGD
Retailer 7$6,574 SGD
Retailer 14$7,655 SGD
NZ Jewellers$8,948 SGD

33 data points across 17 retailers

21 retailers$3,424 SGD to $7,655 SGD

A
Cheapest Retailer
-
$3,424 SGD
₹255,067 INR
B+
Retailer 2
-
$3,888 SGD
$3,041 USD
View
B+
Retailer 3
-
$4,041 SGD
$3,161 USD
View
B+
Retailer 4
-
$4,096 SGD
$3,204 USD
View
B+
Retailer 5
-
$4,202 SGD
$3,287 USD
View
Final sale: no returns
B+
Retailer 6
-
$4,220 SGD
$3,301 USD
View
B
Retailer 7
-
$4,379 SGD
$3,425 USD
View
B+
Retailer 8
-
$4,738 SGD
$3,707 USD
View
B+
Retailer 9
-
$4,758 SGD
£2,931 GBP
View
B
Retailer 10
-
$4,852 SGD
$3,795 USD
View
Retailer 11
-
$5,135 SGD
$4,017 USD
View
Price last confirmed 40 days ago
Retailer 12
-
$5,135 SGD
$4,017 USD
View
Price last confirmed 24 days ago
Retailer 13
-
$5,135 SGD
$4,017 USD
View
Price last confirmed 20 days ago
B
Retailer 14
-
$5,330 SGD
€3,971 EUR
View
Retailer 15
-
$5,506 SGD
A$6,627 AUD
View
Price last confirmed 28 days ago
B
Retailer 16
-
$5,596 SGD
ZAR 70,721 ZAR
View
Retailer 17
-
$5,925 SGD
$4,635 USD
View
Price last confirmed 40 days ago
Retailer 18
-
$5,925 SGD
$4,635 USD
View
Price last confirmed 23 days ago
B
Retailer 19
-
$6,574 SGD
$5,142 USD
View
B
Retailer 20
-
$7,655 SGD
£4,715 GBP
View
Most Expensive
NZ Jewellers
3b2bd033-6904-4a27-a687-b3d0e1a5b0a2 · Sep 30
$8,948 SGD
$6,999 USD
View
Price last confirmed 32 days ago
20 more retailers have this diamond
Prices start from $3,424 SGDSave up to $4,231 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
1.30ct Oval
$3,424 SGD