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 $1,141 USD
As of October 31, 2026
Save $1,875 USD (62%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $3,016 USD 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 $1,141 to $3,016, a $1,875 spread on the same certified stone. NZ Jewellers lists it at $3,016. 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
Color
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: Oct 31
Current: $3,016 USD|Low: $1,046 USD|High: $3,020 USD|Avg: $1,496 USD|-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
October 31, 2026
Retailer 16$1,141 USD
Retailer 14$1,180 USD
Retailer 17$1,184 USD
Retailer 15$1,185 USD
Retailer 3$1,221 USD
Retailer 6$1,237 USD
Retailer 9$1,237 USD
Retailer 4$1,284 USD
Retailer 5$1,286 USD
Retailer 7$1,292 USD
Retailer 8$1,371 USD
Retailer 2$1,427 USD
Retailer 10$1,435 USD
Retailer 12$1,509 USD
Retailer 11$1,728 USD
Retailer 13$2,277 USD
NZ Jewellers$3,016 USD

44 data points across 17 retailers

17 retailers$1,141 USD to $3,016 USD

A
Cheapest Retailer
-
$1,141 USD
Final sale: no returns
A
Retailer 2
-
$1,180 USD
View
A
Retailer 3
-
$1,184 USD
View
A
Retailer 4
-
$1,185 USD
View
Retailer 5
-
$1,221 USD
£961 GBP
View
Price last confirmed 31 days ago
A
Retailer 6
-
$1,237 USD
View
A
Retailer 7
-
$1,237 USD
View
B+
Retailer 8
-
$1,284 USD
View
B+
Retailer 9
-
$1,286 USD
View
B+
Retailer 10
-
$1,292 USD
View
B+
Retailer 11
-
$1,371 USD
View
B+
Retailer 12
-
$1,427 USD
View
B+
Retailer 13
-
$1,435 USD
£1,130 GBP
View
A
Retailer 14
-
$1,509 USD
ZAR 24,386 ZAR
View
B+
Retailer 15
-
$1,728 USD
€1,646 EUR
View
B+
Retailer 16
-
$2,277 USD
£1,793 GBP
View
Most Expensive
B
NZ Jewellers
0d51d9f8-e1d2-4c0d-a64e-38ef3143801b · Oct 30
$3,016 USD
View
16 more retailers have this diamond
Prices start from $1,141 USDSave up to $1,875 USD

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
$1,141 USD