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Oval|Natural|GIA

1.20ct J SI1 Oval Natural Diamond

VG • J/SI1 • GIA 1509673927

Certificate GIA 1509673927

Diamond specifications and retailer prices

From £1,720 GBP
$2,305 USD
As of October 30, 2026
Save £2,830 GBP (62%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £4,550 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 1509673927. Listed at 21 retailers as of October 30, 2026, with prices from £1,720 to £4,550, a £2,830 spread on the same certified stone. NZ Jewellers lists it at £4,550. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.20
Carat
J
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle41.64°
Pavilion angle38.88°
OriginNatural
Grading LabGIA
CertificateGIA 1509673927
Dimensions7.95 × 5.84 × 3.76 mm
L/W Ratio1.36
Culet sizeNone
Key to symbols
Crystal, Feather, Needle, Natural
Top View
7.95 mm5.84 mm1.20 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1509673927
Side View
Table 60.0%Crown 41.64°Girdle: STK-VTKPavilion 38.88°Culet: NoneDepth 64.4%

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: Oct 30
Current: £2,327 GBP|Low: £1,570 GBP|High: £3,684 GBP|Avg: £2,263 GBP|+4.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 6£1,720 GBP
Retailer 7£1,799 GBP
Retailer 8£1,820 GBP
Retailer 2£1,869 GBP
Retailer 10£2,048 GBP
Retailer 1£2,327 GBP
Retailer 9£2,439 GBP
Retailer 3£2,548 GBP
Retailer 4£2,650 GBP
Retailer 5£3,644 GBP

40 data points across 10 retailers

21 retailers£1,720 GBP to £4,550 GBP

B+
Cheapest Retailer
-
£1,720 GBP
$2,305 USD
B+
Retailer 2
-
£1,773 GBP
$2,375 USD
View
B+
Retailer 3
-
£1,783 GBP
$2,389 USD
View
B+
Retailer 4
-
£1,799 GBP
$2,410 USD
View
B
Retailer 5
-
£1,820 GBP
$2,438 USD
View
Final sale: no returns
B
Retailer 6
-
£1,869 GBP
$2,504 USD
View
B
Retailer 7
-
£1,944 GBP
$2,605 USD
View
B
Retailer 8
-
£1,972 GBP
$2,642 USD
View
B
Retailer 9
-
£1,972 GBP
$2,642 USD
View
B
Retailer 10
-
£2,048 GBP
$2,744 USD
View
B
Retailer 11
-
£2,254 GBP
$3,020 USD
View
B
Retailer 12
-
£2,254 GBP
$3,020 USD
View
B
Retailer 13
-
£2,276 GBP
$3,049 USD
View
B
Retailer 14
-
£2,327 GBP
View
B
Retailer 15
-
£2,329 GBP
$3,120 USD
View
Retailer 16
-
£2,439 GBP
A$5,027 AUD
View
Price last confirmed 23 days ago
B
Retailer 17
-
£2,548 GBP
€3,252 EUR
View
B
Retailer 18
-
£2,650 GBP
ZAR 57,370 ZAR
View
B
Retailer 19
-
£3,137 GBP
$4,203 USD
View
B
Retailer 20
-
£3,644 GBP
View
Most Expensive
C
NZ Jewellers
0b087637-2353-45d1-a0da-6982b8b6de56 · Oct 30
£4,550 GBP
$6,097 USD
View
20 more retailers have this diamond
Prices start from £1,720 GBPSave up to £2,830 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+
1.20ct Oval
£1,720 GBP