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Oval|Natural|GIA

1.30ct J SI1 Oval Natural Diamond

EX • J/SI1 • GIA 6512704490

Certificate GIA 6512704490

Diamond specifications and retailer prices

From HK$20,808 HKD
As of November 6, 2026
Save HK$25,738 HKD (55%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: HK$54,854 HKD 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 November 4, 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 6
Current: HK$20,808 HKD|Low: HK$20,808 HKD|High: HK$53,286 HKD|Avg: HK$32,000 HKD|-13.1%
Retailer 1
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
November 6, 2026
Retailer 1HK$20,808 HKD
Retailer 4HK$23,834 HKD
Retailer 16HK$24,774 HKD
Retailer 3HK$25,111 HKD
Retailer 5HK$25,762 HKD
Retailer 14HK$25,871 HKD
Retailer 2HK$26,843 HKD
Retailer 10HK$28,881 HKD
Retailer 13HK$29,045 HKD
Retailer 15HK$29,743 HKD
Retailer 8HK$31,483 HKD
Retailer 9HK$32,486 HKD
Retailer 7HK$33,756 HKD
Retailer 11HK$34,069 HKD
Retailer 6HK$40,300 HKD
Retailer 12HK$46,546 HKD

32 data points across 16 retailers

21 retailersHK$20,808 HKD to HK$46,546 HKD

A
Cheapest Retailer
-
HK$20,808 HKD
B+
Retailer 2
-
HK$23,834 HKD
View
B+
Retailer 3
-
HK$24,774 HKD
View
B+
Retailer 4
-
HK$25,111 HKD
View
B+
Retailer 5
-
HK$25,762 HKD
View
Final sale: no returns
B+
Retailer 6
-
HK$25,871 HKD
View
B
Retailer 7
-
HK$26,843 HKD
View
B+
Retailer 8
-
HK$28,881 HKD
View
B+
Retailer 9
-
HK$29,045 HKD
View
B
Retailer 10
-
HK$29,743 HKD
View
Retailer 11
-
HK$31,483 HKD
View
Price last confirmed 45 days ago
Retailer 12
-
HK$31,483 HKD
View
Price last confirmed 29 days ago
Retailer 13
-
HK$31,483 HKD
View
Price last confirmed 25 days ago
B
Retailer 14
-
HK$32,486 HKD
View
Retailer 15
-
HK$33,756 HKD
View
Price last confirmed 33 days ago
B
Retailer 16
-
HK$34,069 HKD
View
Retailer 17
-
HK$36,326 HKD
View
Price last confirmed 45 days ago
Retailer 18
-
HK$36,326 HKD
View
Price last confirmed 28 days ago
Retailer 19
-
HK$40,300 HKD
View
Price last confirmed 11 days ago
B
Retailer 20
-
HK$46,546 HKD
View
Most Expensive
NZ Jewellers
3b2bd033-6904-4a27-a687-b3d0e1a5b0a2 · Sep 30
HK$54,854 HKD
$6,999 USD
View
Price last confirmed 37 days ago
20 more retailers have this diamond
Prices start from HK$20,808 HKDSave up to HK$25,738 HKD

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
HK$20,808 HKD