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Radiant|Natural|IGI

1.00ct I SI1 Radiant Natural Diamond

VG • I/SI1 • IGI 766617727

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

Certificate IGI 766617727

Diamond specifications and retailer prices

From £847 GBP
$1,135 USD
As of November 1, 2026
Save £1,440 GBP (63%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £2,287 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 766617727. Listed at 16 retailers as of October 30, 2026, with prices from £847 to £2,287, a £1,440 spread on the same certified stone. NZ Jewellers lists it at £2,287. 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 angle44.1°
Pavilion angle34.2°
OriginNatural
Grading LabIGI
CertificateIGI 766617727
Dimensions6.74 × 4.95 × 3.43 mm
L/W Ratio1.36
Culet sizePointed
Top View
6.74 mm4.95 mm1.00 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 766617727
Side View
Table 66.0%Crown 44.1°Girdle: MED-STKPavilion 34.2°Culet: NoneDepth 69.3%

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 1
Current: £2,287 GBP|Low: £847 GBP|High: £2,320 GBP|Avg: £1,169 GBP|-1.4%
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
November 2, 2026
Retailer 6£847 GBP
Retailer 4£869 GBP
Retailer 2£915 GBP
Retailer 3£937 GBP
Retailer 13£937 GBP
Retailer 10£940 GBP
Retailer 8£965 GBP
Retailer 14£974 GBP
Retailer 11£1,144 GBP
Retailer 12£1,158 GBP
Retailer 7£1,309 GBP
Retailer 5£1,374 GBP
Retailer 9£1,717 GBP
NZ Jewellers£2,287 GBP

20 data points across 14 retailers

16 retailers£847 GBP to £2,287 GBP

A
Cheapest Retailer
-
£847 GBP
$1,135 USD
A
Retailer 2
-
£869 GBP
SGD 1,573 SGD
View
A
Retailer 3
-
£912 GBP
$1,222 USD
View
Final sale: no returns
A
Retailer 4
-
£915 GBP
View
A
Retailer 5
-
£937 GBP
$1,256 USD
View
A
Retailer 6
-
£937 GBP
$1,256 USD
View
A
Retailer 7
-
£940 GBP
$1,260 USD
View
A
Retailer 8
-
£965 GBP
View
A
Retailer 9
-
£974 GBP
$1,305 USD
View
B+
Retailer 10
-
£1,047 GBP
A$2,158 AUD
View
A
Retailer 11
-
£1,144 GBP
ZAR 24,772 ZAR
View
B+
Retailer 12
-
£1,158 GBP
$1,551 USD
View
A
Retailer 13
-
£1,309 GBP
€1,671 EUR
View
B+
Retailer 14
-
£1,374 GBP
$1,841 USD
View
B+
Retailer 15
-
£1,717 GBP
View
Most Expensive
B
NZ Jewellers
edf30b26-637b-4d43-b625-f57293cead79 · Oct 30
£2,287 GBP
$3,064 USD
View
15 more retailers have this diamond
Prices start from £847 GBPSave up to £1,440 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
£847 GBP