Radiant|Natural|IGI

1.51ct K SI2 Radiant Natural Diamond

VG • K/SI2 • IGI 660411129

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

Certificate IGI 660411129

Diamond specifications and retailer prices

From $1,733 USD
As of November 4, 2026
Save $2,907 USD (63%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $4,640 USD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.51ct natural radiant diamond

This 1.51ct natural radiant sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI 660411129. Listed at 13 retailers as of November 4, 2026, with prices from $1,733 to $4,640, a $2,907 spread on the same certified stone. NZ Jewellers lists it at $4,640. 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

1.51
Carat
K
Color
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle45.8°
Pavilion angle31.6°
OriginNatural
Grading LabIGI
CertificateIGI 660411129
Dimensions7.20 × 5.77 × 3.99 mm
L/W Ratio1.25
Culet sizePointed
Top View
7.20 mm5.77 mm1.51 ctK / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 660411129
Side View
Table 66.0%Crown 45.8°Girdle: MED-STKPavilion 31.6°Culet: NoneDepth 69.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $4,640 USD|Low: $1,733 USD|High: $4,640 USD|Avg: $2,323 USD
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
November 6, 2026
Retailer 10$1,733 USD
Retailer 12$1,858 USD
Retailer 2$1,895 USD
Retailer 8$1,902 USD
Retailer 13$1,902 USD
Retailer 3$1,903 USD
Retailer 9$1,990 USD
Retailer 11$1,996 USD
Retailer 4$2,039 USD
Retailer 14$2,195 USD
Retailer 5$2,263 USD
Retailer 6$2,599 USD
Retailer 7$3,332 USD
NZ Jewellers$4,640 USD

38 data points across 14 retailers

13 retailers$1,733 USD to $4,640 USD

A
Cheapest Retailer
-
$1,733 USD
B+
Retailer 2
-
$1,858 USD
View
A
Retailer 3
-
$1,895 USD
View
B+
Retailer 4
-
$1,902 USD
View
Retailer 5
-
$1,902 USD
View
Price last confirmed 9 days ago
B+
Retailer 6
-
$1,903 USD
View
B+
Retailer 7
-
$1,990 USD
View
B+
Retailer 8
-
$1,996 USD
View
B+
Retailer 9
-
$2,039 USD
View
Retailer 10
-
$2,195 USD
View
Price last confirmed 61 days ago
B+
Retailer 11
-
$2,195 USD
View
B+
Retailer 12
-
$3,332 USD
View
Most Expensive
B
NZ Jewellers
befa1d0d-51a9-4245-bdd3-d044f374e15d · Nov 5
$4,640 USD
View
12 more retailers have this diamond
Prices start from $1,733 USDSave up to $2,907 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
1.51ct Radiant
$1,733 USD