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Oval|Natural|GIA

1.20ct G SI1 Oval Natural Diamond

EX • G/SI1 • GIA 5241085728

Certificate GIA 5241085728

Diamond specifications and retailer prices

From £1,626 GBP
As of November 6, 2026
Save £2,988 GBP (65%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £4,614 GBP at NZ Jewellers · As of November 5, 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 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 5241085728. Listed at 13 retailers as of November 5, 2026, with prices from £1,626 to £4,614, a £2,988 spread on the same certified stone. NZ Jewellers lists it at £4,614. 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
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Pavilion angle35.75°
OriginNatural
Grading LabGIA
CertificateGIA 5241085728
Dimensions8.21 × 5.80 × 3.74 mm
L/W Ratio1.42
Key to symbols
Twinning Wisp, Crystal, Cloud, Feather, Needle
Top View
8.21 mm5.80 mm1.20 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 5241085728
Side View
Table 57.0%CrownGirdle: STK-VTKPavilion 35.75°Culet: NoneDepth 64.6%

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 6
Current: £4,614 GBP|Low: £1,626 GBP|High: £4,722 GBP|Avg: £2,640 GBP|+12.1%
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
November 6, 2026
Retailer 3£1,626 GBP
Retailer 10£1,915 GBP
Retailer 4£2,078 GBP
Retailer 6£2,140 GBP
Retailer 12£2,207 GBP
Retailer 7£2,264 GBP
Retailer 13£2,292 GBP
Retailer 11£2,396 GBP
Retailer 8£2,566 GBP
Retailer 2£2,755 GBP
Retailer 5£3,499 GBP
Retailer 9£3,680 GBP
NZ Jewellers£4,614 GBP

25 data points across 13 retailers

13 retailers£1,626 GBP to £4,614 GBP

A
Cheapest Retailer
-
£1,626 GBP
A
Retailer 2
-
£1,915 GBP
View
A
Retailer 3
-
£2,078 GBP
View
A
Retailer 4
-
£2,140 GBP
View
A
Retailer 5
-
£2,207 GBP
View
A
Retailer 6
-
£2,264 GBP
View
B+
Retailer 7
-
£2,292 GBP
View
B+
Retailer 8
-
£2,396 GBP
View
B+
Retailer 9
-
£2,566 GBP
View
B+
Retailer 10
-
£2,755 GBP
View
Retailer 11
-
£3,499 GBP
View
Price last confirmed 16 days ago
B
Retailer 12
-
£3,680 GBP
View
Most Expensive
B
NZ Jewellers
62d0dd81-8892-46e2-83b0-45d957ac0695 · Nov 5
£4,614 GBP
$6,176 USD
View
12 more retailers have this diamond
Prices start from £1,626 GBPSave up to £2,988 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
£1,626 GBP