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Radiant|Natural|IGI

1.00ct G SI1 Radiant Natural Diamond

VG • G/SI1 • IGI 708570291

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

Certificate IGI 708570291

Diamond specifications and retailer prices

From £1,748 GBP
As of November 6, 2026
Save £2,334 GBP (57%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £4,082 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1ct natural radiant diamond

This 1ct natural radiant sits in the classic one-carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 708570291. Listed at 15 retailers as of November 5, 2026, with prices from £1,748 to £4,082, a £2,334 spread on the same certified stone. NZ Jewellers lists it at £4,082. 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
G
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46.7°
Pavilion angle30.8°
OriginNatural
Grading LabIGI
CertificateIGI 708570291
Dimensions6.14 × 4.94 × 3.46 mm
L/W Ratio1.24
Culet sizePointed
Top View
6.14 mm4.94 mm1.00 ctG / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 708570291
Side View
Table 65.0%Crown 46.7°Girdle: MED-STKPavilion 30.8°Culet: NoneDepth 70.0%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: £4,082 GBP|Low: £1,797 GBP|High: £4,082 GBP|Avg: £2,417 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 7, 2026
Retailer 3£1,797 GBP
Retailer 5£1,894 GBP
Retailer 9£1,952 GBP
Retailer 11£1,952 GBP
Retailer 2£2,028 GBP
Retailer 4£2,103 GBP
Retailer 10£2,253 GBP
Retailer 7£2,383 GBP
Retailer 6£2,424 GBP
Retailer 8£3,411 GBP
NZ Jewellers£4,082 GBP

30 data points across 11 retailers

15 retailers£1,748 GBP to £4,082 GBP

B+
Cheapest Retailer
-
£1,748 GBP
B+
Retailer 2
-
£1,797 GBP
View
B+
Retailer 3
-
£1,860 GBP
View
B+
Retailer 4
-
£1,894 GBP
View
B+
Retailer 5
-
£1,928 GBP
View
B+
Retailer 6
-
£1,952 GBP
View
Retailer 7
-
£1,952 GBP
View
Price last confirmed 13 days ago
B+
Retailer 8
-
£2,028 GBP
View
B+
Retailer 9
-
£2,058 GBP
View
B+
Retailer 10
-
£2,103 GBP
View
B
Retailer 11
-
£2,253 GBP
View
B+
Retailer 12
-
£2,383 GBP
View
B
Retailer 13
-
£2,424 GBP
View
B
Retailer 14
-
£3,411 GBP
View
Most Expensive
C
NZ Jewellers
2e9476c9-0ed7-4437-b511-8ef1b36b42b1 · Nov 5
£4,082 GBP
$5,464 USD
View
14 more retailers have this diamond
Prices start from £1,748 GBPSave up to £2,334 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+
1.00ct Radiant
£1,748 GBP