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Radiant|Natural|IGI

1.51ct K VS1 Radiant Natural Diamond

VG • K/VS1 • IGI 821621185

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI 821621185

Diamond specifications and retailer prices

From £2,226 GBP
As of November 6, 2026
Save £2,410 GBP (52%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £4,636 GBP at NZ Jewellers · As of November 3, 2026
View at NZ Jewellers

About this 1.51ct natural radiant diamond

This 1.51ct natural radiant sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI 821621185. Listed at 11 retailers as of November 3, 2026, with prices from £2,226 to £4,636, a £2,410 spread on the same certified stone. NZ Jewellers lists it at £4,636. 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

1.51
Carat
K
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle36.2°
Pavilion angle29.5°
OriginNatural
Grading LabIGI
CertificateIGI 821621185
Dimensions6.91 × 5.77 × 4.00 mm
L/W Ratio1.20
Top View
6.91 mm5.77 mm1.51 ctK / VS1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI 821621185
Side View
Table 57.0%Crown 36.2°Girdle: STK-THKPavilion 29.5°CuletDepth 69.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £2,559 GBP|Low: £2,226 GBP|High: £4,503 GBP|Avg: £3,105 GBP
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 7, 2026
Retailer 2£2,226 GBP
Retailer 3£2,493 GBP
Retailer 1£2,559 GBP
Retailer 7£2,764 GBP
Retailer 4£3,245 GBP
Retailer 5£3,248 GBP
Retailer 6£4,437 GBP

44 data points across 7 retailers

11 retailers£2,226 GBP to £4,636 GBP

A
Cheapest Retailer
-
£2,226 GBP
A
Retailer 2
-
£2,493 GBP
View
B+
Retailer 3
-
£2,559 GBP
View
B+
Retailer 4
-
£2,661 GBP
View
B+
Retailer 5
-
£2,764 GBP
View
B+
Retailer 6
-
£2,769 GBP
View
B+
Retailer 7
-
£3,070 GBP
View
B+
Retailer 8
-
£3,245 GBP
View
B+
Retailer 9
-
£3,248 GBP
View
B
Retailer 10
-
£4,437 GBP
View
Most Expensive
B
NZ Jewellers
ac3761aa-0dc6-4720-9af4-fb0f19618b43 · Nov 3
£4,636 GBP
$6,205 USD
View
10 more retailers have this diamond
Prices start from £2,226 GBPSave up to £2,410 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
1.51ct Radiant
£2,226 GBP