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Round|Natural|GIA

1.20ct D SI2 Round Natural Diamond

EX • D/SI2 • GIA 2566547560

Certificate GIA 2566547560

Diamond specifications and retailer prices

From £1,816 GBP
As of November 6, 2026
Save £2,421 GBP (57%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £4,237 GBP at NZ Jewellers · As of November 5, 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 2566547560. Listed at 18 retailers as of November 5, 2026, with prices from £1,816 to £4,237, a £2,421 spread on the same certified stone. NZ Jewellers lists it at £4,237. 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 angle31.5°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 2566547560
Dimensions6.85 × 6.89 × 4.16 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather
Top View
6.85 mm6.89 mm1.20 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2566547560
Side View
Table 60.0%Crown 31.5°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 60.6%

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: £4,237 GBP|Low: £1,816 GBP|High: £4,794 GBP|Avg: £2,609 GBP|-11.6%
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
November 6, 2026
Retailer 8£1,816 GBP
Retailer 14£1,875 GBP
Retailer 5£2,095 GBP
Retailer 6£2,159 GBP
Retailer 16£2,188 GBP
Retailer 4£2,245 GBP
Retailer 18£2,252 GBP
Retailer 2£2,327 GBP
Retailer 3£2,433 GBP
Retailer 10£2,462 GBP
Retailer 11£2,486 GBP
Retailer 17£2,526 GBP
Retailer 9£2,554 GBP
Retailer 12£2,748 GBP
Retailer 7£2,806 GBP
Retailer 13£2,811 GBP
Retailer 15£4,056 GBP
NZ Jewellers£4,237 GBP

19 data points across 18 retailers

18 retailers£1,816 GBP to £4,237 GBP

A
Cheapest Retailer
-
£1,816 GBP
A
Retailer 2
-
£1,875 GBP
View
A
Retailer 3
-
£2,095 GBP
View
A
Retailer 4
-
£2,159 GBP
View
A
Retailer 5
-
£2,188 GBP
View
A
Retailer 6
-
£2,245 GBP
View
Final sale: no returns
A
Retailer 7
-
£2,252 GBP
View
A
Retailer 8
-
£2,327 GBP
View
A
Retailer 9
-
£2,433 GBP
View
Retailer 10
-
£2,462 GBP
View
Price last confirmed 8 days ago
A
Retailer 11
-
£2,486 GBP
View
A
Retailer 12
-
£2,526 GBP
View
Retailer 13
-
£2,554 GBP
View
Price last confirmed 11 days ago
A
Retailer 14
-
£2,748 GBP
View
B+
Retailer 15
-
£2,806 GBP
View
B+
Retailer 16
-
£2,811 GBP
View
B+
Retailer 17
-
£4,056 GBP
View
Most Expensive
B
NZ Jewellers
7b6f7e23-934c-4b3f-86d3-f24d15d103fb · Nov 5
£4,237 GBP
$5,703 USD
View
17 more retailers have this diamond
Prices start from £1,816 GBPSave up to £2,421 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
£1,816 GBP