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Radiant|Natural|GIA

1.56ct I SI1 Radiant Natural Diamond

VG • I/SI1 • GIA 017A

Certificate GIA 017A

Diamond specifications and retailer prices

From £3,013 GBP
As of November 4, 2026
Save £3,292 GBP (52%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £6,305 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.56ct natural radiant diamond

This 1.56ct natural radiant sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA. Listed at 11 retailers as of November 4, 2026, with prices from £3,013 to £6,305, a £3,292 spread on the same certified stone. NZ Jewellers lists it at £6,305. 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

1.56
Carat
I
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 017A
Dimensions7.56 × 5.89 × 4.18 mm
L/W Ratio1.28
Top View
7.56 mm5.89 mm1.56 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 017A
Side View
Table 74.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 71.0%

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 4
Current: £6,305 GBP|Low: £3,013 GBP|High: £6,305 GBP|Avg: £3,916 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 7, 2026
Retailer 4£3,013 GBP
Retailer 2£3,382 GBP
Retailer 5£3,415 GBP
Retailer 6£3,415 GBP
Retailer 7£3,609 GBP
Retailer 3£3,903 GBP
NZ Jewellers£6,305 GBP

12 data points across 7 retailers

11 retailers£3,013 GBP to £6,305 GBP

A
Cheapest Retailer
-
£3,013 GBP
A
Retailer 2
-
£3,382 GBP
View
Retailer 3
-
£3,415 GBP
View
Price last confirmed 9 days ago
Retailer 4
-
£3,415 GBP
View
Price last confirmed 30 days ago
B+
Retailer 5
-
£3,415 GBP
View
Retailer 6
-
£3,415 GBP
View
Price last confirmed 31 days ago
B+
Retailer 7
-
£3,609 GBP
View
B+
Retailer 8
-
£3,903 GBP
View
Retailer 9
-
£3,941 GBP
View
Price last confirmed 31 days ago
Retailer 10
-
£6,305 GBP
View
Price last confirmed 32 days ago
Most Expensive
B
NZ Jewellers
46ef156c-14a1-48d1-85b8-047d723b181f · Nov 5
£6,305 GBP
$8,439 USD
View
10 more retailers have this diamond
Prices start from £3,013 GBPSave up to £3,292 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
1.56ct Radiant
£3,013 GBP