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Radiant|Natural|HRD

1.20ct I SI2 Radiant Natural Diamond

I/SI2 • HRD 170003131812

Certificate HRD 170003131812

Diamond specifications and retailer prices

From £1,919 GBP
As of November 5, 2026
Save £2,093 GBP (52%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £4,011 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 I colour (near-colourless) and SI2 clarity (slightly-included) and certified by HRD 170003131812. Listed at 6 retailers as of November 5, 2026, with prices from £1,919 to £4,011, a £2,093 spread on the same certified stone. NZ Jewellers lists it at £4,011. 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
I
Colour
SI2
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabHRD
CertificateHRD 170003131812
Dimensions5.89 × 5.76 × 3.96 mm
L/W Ratio1.02
Top View
5.89 mm5.76 mm1.20 ctI / SI2
OriginNatural
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateHRD 170003131812
Side View
Table 66.0%CrownGirdle: MediumPavilionCulet: NoneDepth 68.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £4,011 GBP|Low: £1,274 GBP|High: £4,011 GBP|Avg: £2,349 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 9£1,274 GBP
Retailer 5£1,919 GBP
Retailer 6£1,919 GBP
Retailer 8£1,982 GBP
Retailer 4£2,007 GBP
Retailer 7£2,214 GBP
Retailer 2£2,382 GBP
Retailer 3£3,379 GBP
NZ Jewellers£4,011 GBP

20 data points across 9 retailers

6 retailers£1,919 GBP to £4,011 GBP

B+
Cheapest Retailer
-
£1,919 GBP
B+
Retailer 2
-
£2,007 GBP
View
B
Retailer 3
-
£2,214 GBP
View
B
Retailer 4
-
£2,382 GBP
View
Retailer 5
-
£3,379 GBP
View
Price last confirmed 9 days ago
Most Expensive
C
NZ Jewellers
0f63cc0d-fb3d-4149-b984-9ad3ca416c11 · Nov 5
£4,011 GBP
$5,369 USD
View
5 more retailers have this diamond
Prices start from £1,919 GBPSave up to £2,093 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.

B+
1.20ct Radiant
£1,919 GBP