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Oval|Natural|GIA

1.20ct J SI1 Oval Natural Diamond

EX • J/SI1 • GIA 7551184900

Certificate GIA 7551184900

Diamond specifications and retailer prices

From £1,223 GBP
HK$12,800 HKD
As of October 31, 2026
Save £2,146 GBP (64%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £3,369 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.2ct natural oval diamond

This 1.2ct natural oval sits in the classic one-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 7551184900. Listed at 23 retailers as of October 30, 2026, with prices from £1,223 to £3,369, a £2,146 spread on the same certified stone. NZ Jewellers lists it at £3,369. 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

1.20
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle38.4°
Pavilion angle37.8°
OriginNatural
Grading LabGIA
CertificateGIA 7551184900
Dimensions8.22 × 5.92 × 3.84 mm
L/W Ratio1.39
Girdle conditionFaceted
Top View
8.22 mm5.92 mm1.20 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 7551184900
Side View
Table 57.0%Crown 38.4°Girdle: MED-THKPavilion 37.8°Culet: NoneDepth 64.9%

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: Oct 31
Current: £3,369 GBP|Low: £1,213 GBP|High: £3,468 GBP|Avg: £1,756 GBP|-2.9%
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
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
October 31, 2026
Retailer 2£1,223 GBP
Retailer 12£1,319 GBP
Retailer 11£1,348 GBP
Retailer 19£1,349 GBP
Retailer 8£1,400 GBP
Retailer 7£1,416 GBP
Retailer 5£1,460 GBP
Retailer 10£1,460 GBP
Retailer 3£1,489 GBP
Retailer 6£1,527 GBP
Retailer 4£1,531 GBP
Retailer 17£1,577 GBP
Retailer 20£1,620 GBP
Retailer 21£1,620 GBP
Retailer 22£1,679 GBP
Retailer 15£1,684 GBP
Retailer 18£1,768 GBP
Retailer 9£1,967 GBP
Retailer 13£1,981 GBP
Retailer 16£2,052 GBP
Retailer 14£2,838 GBP
NZ Jewellers£3,369 GBP

24 data points across 22 retailers

23 retailers£1,223 GBP to £3,369 GBP

A
Cheapest Retailer
-
£1,223 GBP
HK$12,800 HKD
A
Retailer 2
-
£1,319 GBP
$1,767 USD
View
B+
Retailer 3
-
£1,348 GBP
$1,806 USD
View
Final sale: no returns
A
Retailer 4
-
£1,349 GBP
$1,808 USD
View
A
Retailer 5
-
£1,400 GBP
$1,876 USD
View
A
Retailer 6
-
£1,416 GBP
$1,897 USD
View
B+
Retailer 7
-
£1,460 GBP
$1,956 USD
View
B+
Retailer 8
-
£1,460 GBP
$1,956 USD
View
B+
Retailer 9
-
£1,489 GBP
$1,995 USD
View
B+
Retailer 10
-
£1,527 GBP
$2,046 USD
View
B+
Retailer 11
-
£1,531 GBP
$2,052 USD
View
B+
Retailer 12
-
£1,577 GBP
View
B+
Retailer 13
-
£1,620 GBP
$2,170 USD
View
B+
Retailer 14
-
£1,620 GBP
$2,170 USD
View
B+
Retailer 15
-
£1,679 GBP
$2,250 USD
View
B+
Retailer 16
-
£1,684 GBP
$2,257 USD
View
B+
Retailer 17
-
£1,768 GBP
View
B
Retailer 18
-
£1,967 GBP
$2,636 USD
View
B+
Retailer 19
-
£1,981 GBP
ZAR 42,872 ZAR
View
B+
Retailer 20
-
£2,052 GBP
€2,619 EUR
View
Retailer 21
-
£2,088 GBP
A$4,305 AUD
View
Price last confirmed 24 days ago
B
Retailer 22
-
£2,838 GBP
View
Most Expensive
B
NZ Jewellers
dc54fc18-cd9f-41be-b7cc-6cae77bc9f17 · Oct 30
£3,369 GBP
$4,514 USD
View
22 more retailers have this diamond
Prices start from £1,223 GBPSave up to £2,146 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
1.20ct Oval
£1,223 GBP