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Radiant|Natural|GIA

1.20ct D SI2 Radiant Natural Diamond

GD • D/SI2 • GIA 1558958102

Certificate GIA 1558958102

Diamond specifications and retailer prices

From £1,670 GBP
As of November 6, 2026
Save £3,015 GBP (64%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £4,685 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.2ct natural radiant diamond

This 1.2ct natural radiant sits in the classic one-carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1558958102. Listed at 13 retailers as of November 5, 2026, with prices from £1,670 to £4,685, a £3,015 spread on the same certified stone. NZ Jewellers lists it at £4,685. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.20
Carat
D
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 1558958102
Dimensions6.87 × 5.27 × 3.74 mm
L/W Ratio1.30
Girdle conditionPolished
Culet sizeNone
Key to symbols
Crystal, Feather, Indented Natural, Natural
Top View
6.87 mm5.27 mm1.20 ctD / SI2
OriginNatural
CutGood
PolishVery Good
SymmetryExcellent
FluorescenceMedium
CertificateGIA 1558958102
Side View
Table 69.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 70.8%

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: £4,685 GBP|Low: £1,670 GBP|High: £4,713 GBP|Avg: £2,530 GBP|+17.2%
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 7, 2026
Retailer 6£1,670 GBP
Retailer 11£1,777 GBP
Retailer 9£2,007 GBP
Retailer 8£2,241 GBP
Retailer 5£2,267 GBP
Retailer 12£2,327 GBP
Retailer 4£2,340 GBP
Retailer 2£2,372 GBP
Retailer 7£2,457 GBP
Retailer 13£2,525 GBP
Retailer 3£2,586 GBP
Retailer 10£3,737 GBP
NZ Jewellers£4,685 GBP

24 data points across 13 retailers

13 retailers£1,670 GBP to £4,685 GBP

A
Cheapest Retailer
-
£1,670 GBP
A
Retailer 2
-
£1,777 GBP
View
Final sale: no returns
A
Retailer 3
-
£2,007 GBP
View
B+
Retailer 4
-
£2,241 GBP
View
Retailer 5
-
£2,267 GBP
View
Price last confirmed 9 days ago
B+
Retailer 6
-
£2,327 GBP
View
B+
Retailer 7
-
£2,340 GBP
View
B+
Retailer 8
-
£2,372 GBP
View
B+
Retailer 9
-
£2,457 GBP
View
B+
Retailer 10
-
£2,525 GBP
View
B+
Retailer 11
-
£2,586 GBP
View
B
Retailer 12
-
£3,737 GBP
View
Most Expensive
C
NZ Jewellers
ef1d7ff0-189f-416b-b985-4aa6469da8f2 · Nov 5
£4,685 GBP
$6,271 USD
View
12 more retailers have this diamond
Prices start from £1,670 GBPSave up to £3,015 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 Radiant
£1,670 GBP