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Round|Natural|GIA

1.20ct E SI2 Round Natural Diamond

EX • E/SI2 • GIA 2507071877

Certificate GIA 2507071877

Diamond specifications and retailer prices

From £2,548 GBP
As of November 1, 2026
Save £3,020 GBP (54%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £5,569 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.2ct natural round diamond

This 1.2ct natural round sits in the classic one-carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2507071877. Listed at 17 retailers as of October 30, 2026, with prices from £2,548 to £5,569, a £3,020 spread on the same certified stone. NZ Jewellers lists it at £5,569. 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
E
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceMedium
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2507071877
Dimensions6.82 × 6.77 × 4.22 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
6.82 mm6.77 mm1.20 ctE / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2507071877
Side View
Table 58.0%Crown 36°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.1%

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: £5,569 GBP|Low: £2,548 GBP|High: £5,569 GBP|Avg: £3,427 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 2, 2026
Retailer 6£2,548 GBP
Retailer 13£2,600 GBP
Retailer 7£2,608 GBP
Retailer 11£2,820 GBP
Retailer 4£2,895 GBP
Retailer 5£2,895 GBP
Retailer 14£2,924 GBP
Retailer 15£3,007 GBP
Retailer 16£3,037 GBP
Retailer 10£3,222 GBP
Retailer 9£3,341 GBP
Retailer 17£3,374 GBP
Retailer 2£3,430 GBP
Retailer 8£3,617 GBP
Retailer 3£4,668 GBP
Retailer 12£5,090 GBP
NZ Jewellers£5,569 GBP

34 data points across 17 retailers

17 retailers£2,548 GBP to £5,569 GBP

A
Cheapest Retailer
-
£2,548 GBP
A
Retailer 2
-
£2,600 GBP
View
A
Retailer 3
-
£2,608 GBP
View
B+
Retailer 4
-
£2,820 GBP
View
B+
Retailer 5
-
£2,895 GBP
View
Retailer 6
-
£2,895 GBP
View
Price last confirmed 8 days ago
B+
Retailer 7
-
£2,924 GBP
View
Retailer 8
-
£3,007 GBP
View
Price last confirmed 8 days ago
B+
Retailer 9
-
£3,037 GBP
View
B+
Retailer 10
-
£3,222 GBP
View
B+
Retailer 11
-
£3,341 GBP
View
B+
Retailer 12
-
£3,374 GBP
View
B+
Retailer 13
-
£3,430 GBP
View
Retailer 14
-
£3,617 GBP
View
Price last confirmed 14 days ago
B
Retailer 15
-
£4,668 GBP
View
B
Retailer 16
-
£5,090 GBP
View
Most Expensive
B
NZ Jewellers
1060eb82-9990-42f9-97a0-fa67a846bcfc · Oct 30
£5,569 GBP
$7,495 USD
View
16 more retailers have this diamond
Prices start from £2,548 GBPSave up to £3,020 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 Round
£2,548 GBP