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Round|Natural|GIA

1.20ct D SI2 Round Natural Diamond

EX • D/SI2 • GIA 1559002784

Certificate GIA 1559002784

Diamond specifications and retailer prices

From £2,674 GBP
As of November 6, 2026
Save £1,367 GBP (34%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £6,118 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 D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1559002784. Listed at 21 retailers as of November 4, 2026, with a 51% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
D
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1559002784
Dimensions6.80 × 6.84 × 4.19 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
6.80 mm6.84 mm1.20 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1559002784
Side View
Table 59.0%Crown 35°Girdle: MED-STKPavilion 41°Culet: NoneDepth 61.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £6,118 GBP|Low: £2,540 GBP|High: £6,118 GBP|Avg: £3,725 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
November 5, 2026
Retailer 9£2,674 GBP
Retailer 7£2,794 GBP
Retailer 4£3,165 GBP
Retailer 8£3,181 GBP
Retailer 10£3,181 GBP
Retailer 12£3,181 GBP
Retailer 11£3,670 GBP
Retailer 2£3,718 GBP
Retailer 5£3,812 GBP
Retailer 3£3,877 GBP
Retailer 6£5,622 GBP
NZ Jewellers£6,118 GBP

36 data points across 12 retailers

21 retailers£2,674 GBP to £4,041 GBP

A
Cheapest Retailer
-
£2,674 GBP
A
Retailer 2
-
£2,697 GBP
View
A
Retailer 3
-
£2,794 GBP
View
Final sale: no returns
A
Retailer 4
-
£2,806 GBP
View
B+
Retailer 5
-
£2,906 GBP
View
B+
Retailer 6
-
£3,002 GBP
View
Retailer 7
-
£3,165 GBP
View
Price last confirmed 7 days ago
Retailer 8
-
£3,181 GBP
View
Price last confirmed 8 days ago
Retailer 9
-
£3,181 GBP
View
Price last confirmed 8 days ago
B+
Retailer 10
-
£3,233 GBP
View
B+
Retailer 11
-
£3,464 GBP
View
Retailer 12
-
£3,581 GBP
View
Price last confirmed 7 days ago
Retailer 13
-
£3,581 GBP
View
Price last confirmed 7 days ago
Retailer 14
-
£3,670 GBP
View
Price last confirmed 10 days ago
Retailer 15
-
£3,700 GBP
View
Price last confirmed 7 days ago
B+
Retailer 16
-
£3,718 GBP
View
B+
Retailer 17
-
£3,812 GBP
View
Retailer 18
-
£3,877 GBP
View
Price last confirmed 14 days ago
B+
Retailer 19
-
£4,041 GBP
View
Retailer 20
-
£5,622 GBP
View
Price last confirmed 8 days ago
Most Expensive
NZ Jewellers
6b7cd258-3fcf-404a-9cec-684319f1aae3 · Oct 30
£6,118 GBP
$8,234 USD
View
Price last confirmed 7 days ago
20 more retailers have this diamond
Prices start from £2,674 GBPSave up to £1,367 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
£2,674 GBP