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Oval|Natural|GIA

1.30ct G SI1 Oval Natural Diamond

ID • G/SI1 • GIA 1236766711

Certificate GIA 1236766711

Diamond specifications and retailer prices

From £3,411 GBP
As of November 5, 2026
Save £3,809 GBP (53%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £7,219 GBP at NZ Jewellers · As of November 5, 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 G 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 1236766711. Listed at 16 retailers as of November 5, 2026, with prices from £3,411 to £7,219, a £3,809 spread on the same certified stone. NZ Jewellers lists it at £7,219. 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
G
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle35.72°
Pavilion angle39.4°
OriginNatural
Grading LabGIA
CertificateGIA 1236766711
Dimensions8.81 × 5.97 × 3.72 mm
L/W Ratio1.48
Girdle conditionVery Thick
Key to symbols
Feather, Crystal, Needle
Top View
8.81 mm5.97 mm1.30 ctG / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 1236766711
Side View
Table 58.0%Crown 35.72°Girdle: MED-STKPavilion 39.4°Culet: NoneDepth 62.3%

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 5
Current: £4,188 GBP|Low: £3,308 GBP|High: £6,436 GBP|Avg: £4,353 GBP|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 8£3,411 GBP
Retailer 7£3,609 GBP
Retailer 2£3,668 GBP
Retailer 10£3,739 GBP
Retailer 4£4,144 GBP
Retailer 1£4,188 GBP
Retailer 9£4,323 GBP
Retailer 3£4,690 GBP
Retailer 5£5,266 GBP
Retailer 6£6,341 GBP

37 data points across 10 retailers

16 retailers£3,411 GBP to £7,219 GBP

B+
Cheapest Retailer
-
£3,411 GBP
B+
Retailer 2
-
£3,609 GBP
View
Final sale: no returns
B+
Retailer 3
-
£3,668 GBP
View
B+
Retailer 4
-
£3,739 GBP
View
B+
Retailer 5
-
£3,910 GBP
View
B+
Retailer 6
-
£3,910 GBP
View
Retailer 7
-
£3,910 GBP
View
Price last confirmed 8 days ago
B+
Retailer 8
-
£4,144 GBP
View
B+
Retailer 9
-
£4,188 GBP
View
Retailer 10
-
£4,323 GBP
View
Price last confirmed 28 days ago
B
Retailer 11
-
£4,427 GBP
View
B
Retailer 12
-
£4,512 GBP
View
B
Retailer 13
-
£4,690 GBP
View
B
Retailer 14
-
£5,266 GBP
View
B
Retailer 15
-
£6,341 GBP
View
Most Expensive
B
NZ Jewellers
8b46fd96-65c0-43ad-a020-f4f68d6beccb · Nov 5
£7,219 GBP
$9,663 USD
View
15 more retailers have this diamond
Prices start from £3,411 GBPSave up to £3,809 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.

B+
1.30ct Oval
£3,411 GBP