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Radiant|Natural|IGI

1.00ct I SI1 Radiant Natural Diamond

VG • I/SI1 • IGI 671474709

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

Certificate IGI 671474709

Diamond specifications and retailer prices

From £1,019 GBP
$1,366 USD
As of October 31, 2026
Save £1,675 GBP (62%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £2,694 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1ct natural radiant diamond

This 1ct natural radiant sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 671474709. Listed at 18 retailers as of October 30, 2026, with prices from £1,019 to £2,694, a £1,675 spread on the same certified stone. NZ Jewellers lists it at £2,694. 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

1.00
Carat
I
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.6°
Pavilion angle34.2°
OriginNatural
Grading LabIGI
CertificateIGI 671474709
Dimensions7.27 × 5.24 × 3.22 mm
L/W Ratio1.39
Culet sizePointed
Top View
7.27 mm5.24 mm1.00 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 671474709
Side View
Table 67.0%Crown 39.6°Girdle: THN-MEDPavilion 34.2°Culet: NoneDepth 61.5%

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: Oct 31
Current: £2,694 GBP|Low: £909 GBP|High: £2,694 GBP|Avg: £1,305 GBP
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 1, 2026
Retailer 3£1,019 GBP
Retailer 9£1,024 GBP
Retailer 16£1,037 GBP
Retailer 10£1,077 GBP
Retailer 2£1,105 GBP
Retailer 6£1,105 GBP
Retailer 7£1,107 GBP
Retailer 8£1,153 GBP
Retailer 17£1,155 GBP
Retailer 5£1,175 GBP
Retailer 4£1,206 GBP
Retailer 12£1,253 GBP
Retailer 13£1,275 GBP
Retailer 15£1,348 GBP
Retailer 14£1,538 GBP
Retailer 11£1,935 GBP
NZ Jewellers£2,694 GBP

33 data points across 17 retailers

18 retailers£1,019 GBP to £2,694 GBP

B+
Cheapest Retailer
-
£1,019 GBP
$1,366 USD
Final sale: no returns
B+
Retailer 2
-
£1,024 GBP
$1,372 USD
View
B+
Retailer 3
-
£1,037 GBP
$1,390 USD
View
A
Retailer 4
-
£1,057 GBP
A$2,178 AUD
View
A
Retailer 5
-
£1,077 GBP
View
B+
Retailer 6
-
£1,105 GBP
$1,480 USD
View
B+
Retailer 7
-
£1,105 GBP
$1,480 USD
View
B+
Retailer 8
-
£1,107 GBP
$1,483 USD
View
B+
Retailer 9
-
£1,153 GBP
$1,545 USD
View
B+
Retailer 10
-
£1,155 GBP
$1,548 USD
View
B+
Retailer 11
-
£1,175 GBP
$1,575 USD
View
B+
Retailer 12
-
£1,206 GBP
$1,616 USD
View
B+
Retailer 13
-
£1,253 GBP
View
B+
Retailer 14
-
£1,275 GBP
$1,708 USD
View
A
Retailer 15
-
£1,348 GBP
ZAR 29,183 ZAR
View
B+
Retailer 16
-
£1,538 GBP
€1,962 EUR
View
B
Retailer 17
-
£1,935 GBP
View
Most Expensive
C
NZ Jewellers
08cb3b54-3898-4cb8-b5ad-607dc928e373 · Oct 30
£2,694 GBP
$3,610 USD
View
17 more retailers have this diamond
Prices start from £1,019 GBPSave up to £1,675 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
1.00ct Radiant
£1,019 GBP