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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 $1,459 SGD
$1,141 USD
As of November 2, 2026
Save $2,398 SGD (62%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $3,857 SGD 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 $1,459 to $3,857, a $2,398 spread on the same certified stone. NZ Jewellers lists it at $3,857. 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: $3,857 SGD|Low: $1,338 SGD|High: $3,862 SGD|Avg: $1,917 SGD|-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 3$1,459 SGD
Retailer 16$1,509 SGD
Retailer 4$1,514 SGD
Retailer 17$1,515 SGD
Retailer 5$1,561 SGD
Retailer 7$1,582 SGD
Retailer 11$1,582 SGD
Retailer 2$1,642 SGD
Retailer 6$1,645 SGD
Retailer 8$1,652 SGD
Retailer 9$1,754 SGD
Retailer 13$1,825 SGD
Retailer 10$1,835 SGD
Retailer 15$1,930 SGD
Retailer 14$2,210 SGD
Retailer 12$2,898 SGD
NZ Jewellers$3,857 SGD

44 data points across 17 retailers

17 retailers$1,459 SGD to $3,857 SGD

A
Cheapest Retailer
-
$1,459 SGD
$1,141 USD
Final sale: no returns
A
Retailer 2
-
$1,509 SGD
$1,180 USD
View
A
Retailer 3
-
$1,514 SGD
$1,184 USD
View
A
Retailer 4
-
$1,515 SGD
$1,185 USD
View
Retailer 5
-
$1,561 SGD
£961 GBP
View
Price last confirmed 33 days ago
A
Retailer 6
-
$1,582 SGD
$1,237 USD
View
A
Retailer 7
-
$1,582 SGD
$1,237 USD
View
B+
Retailer 8
-
$1,642 SGD
$1,284 USD
View
B+
Retailer 9
-
$1,645 SGD
$1,286 USD
View
B+
Retailer 10
-
$1,652 SGD
$1,292 USD
View
B+
Retailer 11
-
$1,754 SGD
$1,371 USD
View
B+
Retailer 12
-
$1,825 SGD
$1,427 USD
View
B+
Retailer 13
-
$1,835 SGD
£1,130 GBP
View
A
Retailer 14
-
$1,930 SGD
ZAR 24,386 ZAR
View
B+
Retailer 15
-
$2,210 SGD
€1,646 EUR
View
B+
Retailer 16
-
$2,898 SGD
£1,784 GBP
View
Most Expensive
B
NZ Jewellers
0d51d9f8-e1d2-4c0d-a64e-38ef3143801b · Oct 30
$3,857 SGD
$3,016 USD
View
16 more retailers have this diamond
Prices start from $1,459 SGDSave up to $2,398 SGD

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
$1,459 SGD