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Radiant|Natural|IGI

1.00ct I SI1 Radiant Natural Diamond

VG • I/SI1 • IGI 668406118

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

Certificate IGI 668406118

Diamond specifications and retailer prices

From $1,624 AUD
$1,141 USD
As of November 2, 2026
Save $2,669 AUD (62%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $4,294 AUD 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 668406118. Listed at 17 retailers as of October 30, 2026, with prices from $1,624 to $4,294, a $2,669 spread on the same certified stone. NZ Jewellers lists it at $4,294. 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
FluorescenceFaint
Crown angle47.7°
Pavilion angle39°
OriginNatural
Grading LabIGI
CertificateIGI 668406118
Dimensions7.36 × 4.71 × 3.31 mm
L/W Ratio1.56
Culet sizePointed
Top View
7.36 mm4.71 mm1.00 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 668406118
Side View
Table 62.0%Crown 47.7°Girdle: MediumPavilion 39°Culet: NoneDepth 70.3%

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 2
Current: $4,294 AUD|Low: $1,489 AUD|High: $4,299 AUD|Avg: $2,133 AUD|-0.1%
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 2, 2026
Retailer 17$1,624 AUD
Retailer 15$1,680 AUD
Retailer 3$1,686 AUD
Retailer 16$1,687 AUD
Retailer 4$1,738 AUD
Retailer 7$1,761 AUD
Retailer 10$1,761 AUD
Retailer 5$1,828 AUD
Retailer 6$1,831 AUD
Retailer 8$1,839 AUD
Retailer 9$1,952 AUD
Retailer 12$2,031 AUD
Retailer 2$2,042 AUD
Retailer 14$2,149 AUD
Retailer 13$2,460 AUD
Retailer 11$3,225 AUD
NZ Jewellers$4,294 AUD

44 data points across 17 retailers

17 retailers$1,624 AUD to $4,294 AUD

A
Cheapest Retailer
-
$1,624 AUD
$1,141 USD
Final sale: no returns
A
Retailer 2
-
$1,680 AUD
$1,180 USD
View
A
Retailer 3
-
$1,686 AUD
$1,184 USD
View
A
Retailer 4
-
$1,687 AUD
$1,185 USD
View
Retailer 5
-
$1,738 AUD
£961 GBP
View
Price last confirmed 33 days ago
A
Retailer 6
-
$1,761 AUD
$1,237 USD
View
A
Retailer 7
-
$1,761 AUD
$1,237 USD
View
B+
Retailer 8
-
$1,828 AUD
$1,284 USD
View
B+
Retailer 9
-
$1,831 AUD
$1,286 USD
View
B+
Retailer 10
-
$1,839 AUD
$1,292 USD
View
B+
Retailer 11
-
$1,952 AUD
$1,371 USD
View
B+
Retailer 12
-
$2,031 AUD
$1,427 USD
View
B+
Retailer 13
-
$2,042 AUD
£1,130 GBP
View
A
Retailer 14
-
$2,149 AUD
ZAR 24,386 ZAR
View
B+
Retailer 15
-
$2,460 AUD
€1,646 EUR
View
B+
Retailer 16
-
$3,225 AUD
£1,784 GBP
View
Most Expensive
B
NZ Jewellers
0d51d9f8-e1d2-4c0d-a64e-38ef3143801b · Oct 30
$4,294 AUD
$3,016 USD
View
16 more retailers have this diamond
Prices start from $1,624 AUDSave up to $2,669 AUD

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
$1,624 AUD