Oval|Natural|GIA

1.30ct J SI1 Oval Natural Diamond

EX • J/SI1 • GIA 6512704490

Certificate GIA 6512704490

Diamond specifications and retailer prices

From £1,999 GBP
₹255,067 INR
As of November 1, 2026
Save £2,470 GBP (55%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £5,224 GBP 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: £5,224 GBP|Low: £1,999 GBP|High: £5,224 GBP|Avg: £3,371 GBP
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£1,999 GBP
Retailer 5£2,270 GBP
Retailer 17£2,359 GBP
Retailer 4£2,391 GBP
Retailer 6£2,453 GBP
Retailer 15£2,464 GBP
Retailer 3£2,556 GBP
Retailer 13£2,766 GBP
Retailer 10£2,778 GBP
Retailer 16£2,832 GBP
Retailer 9£2,998 GBP
Retailer 12£3,112 GBP
Retailer 8£3,215 GBP
Retailer 11£3,267 GBP
Retailer 7£3,838 GBP
Retailer 14£4,469 GBP
NZ Jewellers£5,224 GBP

33 data points across 17 retailers

21 retailers£1,999 GBP to £4,469 GBP

A
Cheapest Retailer
-
£1,999 GBP
₹255,067 INR
B+
Retailer 2
-
£2,270 GBP
$3,041 USD
View
B+
Retailer 3
-
£2,359 GBP
$3,161 USD
View
B+
Retailer 4
-
£2,391 GBP
$3,204 USD
View
B+
Retailer 5
-
£2,453 GBP
$3,287 USD
View
Final sale: no returns
B+
Retailer 6
-
£2,464 GBP
$3,301 USD
View
B
Retailer 7
-
£2,556 GBP
$3,425 USD
View
B+
Retailer 8
-
£2,766 GBP
$3,707 USD
View
B+
Retailer 9
-
£2,778 GBP
View
B
Retailer 10
-
£2,832 GBP
$3,795 USD
View
Retailer 11
-
£2,998 GBP
$4,017 USD
View
Price last confirmed 40 days ago
Retailer 12
-
£2,998 GBP
$4,017 USD
View
Price last confirmed 24 days ago
Retailer 13
-
£2,998 GBP
$4,017 USD
View
Price last confirmed 20 days ago
B
Retailer 14
-
£3,112 GBP
€3,971 EUR
View
Retailer 15
-
£3,215 GBP
A$6,627 AUD
View
Price last confirmed 28 days ago
B
Retailer 16
-
£3,267 GBP
ZAR 70,721 ZAR
View
Retailer 17
-
£3,459 GBP
$4,635 USD
View
Price last confirmed 40 days ago
Retailer 18
-
£3,459 GBP
$4,635 USD
View
Price last confirmed 23 days ago
B
Retailer 19
-
£3,838 GBP
$5,142 USD
View
B
Retailer 20
-
£4,469 GBP
View
Most Expensive
NZ Jewellers
3b2bd033-6904-4a27-a687-b3d0e1a5b0a2 · Sep 30
£5,224 GBP
$6,999 USD
View
Price last confirmed 32 days ago
20 more retailers have this diamond
Prices start from £1,999 GBPSave up to £2,470 GBP

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
£1,999 GBP