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Radiant|Natural|GIA

1.20ct H SI1 Radiant Natural Diamond

EX • H/SI1 • GIA 3555716181

Certificate GIA 3555716181

Diamond specifications and retailer prices

From £1,845 GBP
As of November 6, 2026
Save £2,417 GBP (57%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £4,262 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 H 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 3555716181. Listed at 20 retailers as of November 5, 2026, with prices from £1,845 to £4,262, a £2,417 spread on the same certified stone. NZ Jewellers lists it at £4,262. 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryGood
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 3555716181
Dimensions7.50 × 5.35 × 3.58 mm
L/W Ratio1.40
Girdle conditionPolished
Culet sizeNone
Key to symbols
Feather, Crystal, Indented Natural, Needle, Cavity
Top View
7.50 mm5.35 mm1.20 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryGood
FluorescenceFaint
CertificateGIA 3555716181
Side View
Table 66.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 66.9%

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: £4,262 GBP|Low: £1,845 GBP|High: £4,303 GBP|Avg: £2,776 GBP|-1.0%
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
November 7, 2026
Retailer 6£1,845 GBP
Retailer 10£1,916 GBP
Retailer 14£2,182 GBP
Retailer 15£2,194 GBP
Retailer 8£2,258 GBP
Retailer 11£2,373 GBP
Retailer 17£2,446 GBP
Retailer 9£2,470 GBP
Retailer 2£2,531 GBP
Retailer 3£2,540 GBP
Retailer 7£2,554 GBP
Retailer 4£2,615 GBP
Retailer 5£2,823 GBP
Retailer 12£2,848 GBP
Retailer 13£2,985 GBP
Retailer 16£4,080 GBP
NZ Jewellers£4,262 GBP

23 data points across 17 retailers

20 retailers£1,845 GBP to £4,262 GBP

A
Cheapest Retailer
-
£1,845 GBP
A
Retailer 2
-
£1,916 GBP
View
B+
Retailer 3
-
£2,182 GBP
View
B+
Retailer 4
-
£2,194 GBP
View
B+
Retailer 5
-
£2,258 GBP
View
Final sale: no returns
B+
Retailer 6
-
£2,296 GBP
View
B+
Retailer 7
-
£2,297 GBP
View
B+
Retailer 8
-
£2,373 GBP
View
B+
Retailer 9
-
£2,446 GBP
View
Retailer 10
-
£2,470 GBP
View
Price last confirmed 9 days ago
B+
Retailer 11
-
£2,531 GBP
View
B+
Retailer 12
-
£2,540 GBP
View
B+
Retailer 13
-
£2,554 GBP
View
B+
Retailer 14
-
£2,615 GBP
View
Retailer 15
-
£2,661 GBP
View
Price last confirmed 34 days ago
B
Retailer 16
-
£2,823 GBP
View
B
Retailer 17
-
£2,848 GBP
View
B
Retailer 18
-
£2,985 GBP
View
B
Retailer 19
-
£4,080 GBP
View
Most Expensive
B
NZ Jewellers
33956e39-9ced-4cdf-b258-c465d7eed1bc · Nov 5
£4,262 GBP
$5,705 USD
View
19 more retailers have this diamond
Prices start from £1,845 GBPSave up to £2,417 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
£1,845 GBP