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Radiant|Natural|IGI

1.51ct K SI1 Radiant Natural Diamond

VG • K/SI1 • IGI 805628261

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

Certificate IGI 805628261

Diamond specifications and retailer prices

From $3,468 SGD
As of November 6, 2026
Save $3,750 SGD (52%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $7,218 SGD 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 SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 805628261. Listed at 12 retailers as of November 5, 2026, with prices from $3,468 to $7,218, a $3,750 spread on the same certified stone. NZ Jewellers lists it at $7,218. 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
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.2°
Pavilion angle30.1°
OriginNatural
Grading LabIGI
CertificateIGI 805628261
Dimensions7.88 × 5.52 × 3.83 mm
L/W Ratio1.43
Top View
7.88 mm5.52 mm1.51 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 805628261
Side View
Table 69.0%Crown 37.2°Girdle: STK-THKPavilion 30.1°CuletDepth 69.4%

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 6
Current: $7,218 SGD|Low: $3,468 SGD|High: $7,218 SGD|Avg: $4,767 SGD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 7, 2026
Retailer 3$3,468 SGD
Retailer 2$3,986 SGD
Retailer 4$4,019 SGD
Retailer 8$4,143 SGD
Retailer 10$4,302 SGD
Retailer 6$4,780 SGD
Retailer 5$5,048 SGD
Retailer 7$5,057 SGD
Retailer 9$6,910 SGD
NZ Jewellers$7,218 SGD

40 data points across 10 retailers

12 retailers$3,468 SGD to $7,218 SGD

A
Cheapest Retailer
-
$3,468 SGD
B+
Retailer 2
-
$3,986 SGD
View
B+
Retailer 3
-
$4,019 SGD
View
B+
Retailer 4
-
$4,133 SGD
View
B+
Retailer 5
-
$4,143 SGD
View
B+
Retailer 6
-
$4,302 SGD
View
B+
Retailer 7
-
$4,327 SGD
View
B+
Retailer 8
-
$4,780 SGD
View
B+
Retailer 9
-
$5,048 SGD
View
B+
Retailer 10
-
$5,057 SGD
View
B
Retailer 11
-
$6,910 SGD
View
Most Expensive
B
NZ Jewellers
d03f0501-cf4a-4061-9fb1-4c34e4e16201 · Nov 5
$7,218 SGD
$5,632 USD
View
11 more retailers have this diamond
Prices start from $3,468 SGDSave up to $3,750 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
1.51ct Radiant
$3,468 SGD