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Round|Natural|GIA

1.20ct D SI2 Round Natural Diamond

EX • D/SI2 • GIA 2557507607

Certificate GIA 2557507607

Diamond specifications and retailer prices

From £2,016 GBP
As of November 6, 2026
Save £2,650 GBP (57%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £4,665 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 2557507607. Listed at 15 retailers as of November 5, 2026, with prices from £2,016 to £4,665, a £2,650 spread on the same certified stone. NZ Jewellers lists it at £4,665. 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 angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2557507607
Dimensions6.81 × 6.77 × 4.18 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
6.81 mm6.77 mm1.20 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557507607
Side View
Table 60.0%Crown 35.5°Girdle: Slightly ThickPavilion 40.8°Culet: NoneDepth 61.7%

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: £4,665 GBP|Low: £1,997 GBP|High: £4,797 GBP|Avg: £2,903 GBP|-2.8%
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
November 6, 2026
Retailer 15£2,016 GBP
Retailer 10£2,113 GBP
Retailer 11£2,129 GBP
Retailer 5£2,239 GBP
Retailer 6£2,265 GBP
Retailer 13£2,333 GBP
Retailer 14£2,355 GBP
Retailer 4£2,441 GBP
Retailer 8£2,524 GBP
Retailer 2£2,563 GBP
Retailer 7£3,174 GBP
Retailer 3£3,656 GBP
Retailer 12£4,046 GBP
Retailer 9£4,465 GBP
NZ Jewellers£4,665 GBP

27 data points across 15 retailers

15 retailers£2,016 GBP to £4,665 GBP

A
Cheapest Retailer
-
£2,016 GBP
A
Retailer 2
-
£2,113 GBP
View
A
Retailer 3
-
£2,129 GBP
View
A
Retailer 4
-
£2,239 GBP
View
Final sale: no returns
A
Retailer 5
-
£2,265 GBP
View
A
Retailer 6
-
£2,333 GBP
View
A
Retailer 7
-
£2,355 GBP
View
A
Retailer 8
-
£2,441 GBP
View
A
Retailer 9
-
£2,524 GBP
View
A
Retailer 10
-
£2,563 GBP
View
B+
Retailer 11
-
£2,699 GBP
View
B+
Retailer 12
-
£3,656 GBP
View
B+
Retailer 13
-
£4,046 GBP
View
B
Retailer 14
-
£4,465 GBP
View
Most Expensive
B
NZ Jewellers
b5e2a5a0-232f-4fbd-9b97-2bc3c786694f · Nov 5
£4,665 GBP
$6,279 USD
View
14 more retailers have this diamond
Prices start from £2,016 GBPSave up to £2,650 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
£2,016 GBP