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Radiant|Natural|IGI

0.64ct H SI1 Radiant Natural Diamond

VG • H/SI1 • IGI 811673436

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

Certificate IGI 811673436

Diamond specifications and retailer prices

From £531 GBP
$712 USD
As of November 2, 2026
Save £1,274 GBP (71%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,804 GBP at NZ Jewellers · As of October 27, 2026
View at NZ Jewellers

About this 0.64ct natural radiant diamond

This 0.64ct natural radiant sits in the half to three-quarter carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 811673436. Listed at 15 retailers as of October 27, 2026, with prices from £531 to £1,804, a £1,274 spread on the same certified stone. NZ Jewellers lists it at £1,804. 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

0.64
Carat
H
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle38.8°
Pavilion angle36.4°
OriginNatural
Grading LabIGI
CertificateIGI 811673436
Dimensions5.26 × 4.63 × 3.11 mm
L/W Ratio1.14
Top View
5.26 mm4.63 mm0.64 ctH / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 811673436
Side View
Table 75.0%Crown 38.8°Girdle: Slightly ThickPavilion 36.4°CuletDepth 67.2%

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 2
Current: £1,804 GBP|Low: £487 GBP|High: £1,804 GBP|Avg: £786 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
November 2, 2026
Retailer 10£531 GBP
Retailer 3£575 GBP
Retailer 12£575 GBP
Retailer 7£578 GBP
Retailer 11£598 GBP
Retailer 4£664 GBP
Retailer 8£702 GBP
Retailer 6£713 GBP
Retailer 5£746 GBP
Retailer 9£857 GBP
Retailer 2£1,053 GBP
NZ Jewellers£1,804 GBP

44 data points across 12 retailers

15 retailers£531 GBP to £1,804 GBP

B+
Cheapest Retailer
-
£531 GBP
$712 USD
Final sale: no returns
Retailer 2
-
£575 GBP
$772 USD
View
Price last confirmed 49 days ago
B+
Retailer 3
-
£575 GBP
$772 USD
View
B+
Retailer 4
-
£575 GBP
$772 USD
View
A
Retailer 5
-
£578 GBP
$775 USD
View
B+
Retailer 6
-
£583 GBP
$783 USD
View
B+
Retailer 7
-
£598 GBP
$802 USD
View
B+
Retailer 8
-
£664 GBP
$891 USD
View
B+
Retailer 9
-
£674 GBP
$905 USD
View
B+
Retailer 10
-
£702 GBP
View
B+
Retailer 11
-
£713 GBP
View
B+
Retailer 12
-
£746 GBP
€954 EUR
View
Retailer 13
-
£857 GBP
ZAR 18,578 ZAR
View
Price last confirmed 7 days ago
B
Retailer 14
-
£1,053 GBP
View
Most Expensive
C
NZ Jewellers
089cfd85-9d03-441a-a734-b5d62f2e8a9d · Oct 27
£1,804 GBP
$2,421 USD
View
14 more retailers have this diamond
Prices start from £531 GBPSave up to £1,274 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
0.64ct Radiant
£531 GBP