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Round|Natural|IGI

1.51ct K SI2 Round Natural Diamond

VG • K/SI2 • IGI 581308742

Shape and cutting style on the report: Round brilliant

Certificate IGI 581308742

Diamond specifications and retailer prices

From $3,238 NZD
As of November 4, 2026
Save $5,337 NZD (62%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $8,574 NZD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.51ct natural round diamond

This 1.51ct natural round 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 581308742. Listed at 16 retailers as of November 4, 2026, with prices from $3,238 to $8,574, a $5,337 spread on the same certified stone. NZ Jewellers lists it at $8,574. 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
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle31.8°
Pavilion angle42°
OriginNatural
Grading LabIGI
CertificateIGI 581308742
Dimensions7.35 × 7.26 × 4.46 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
7.35 mm7.26 mm1.51 ctK / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateIGI 581308742
Side View
Table 66.0%Crown 31.8°Girdle: MED-THKPavilion 42°Culet: NoneDepth 60.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $8,574 NZD|Low: $2,446 NZD|High: $8,574 NZD|Avg: $4,767 NZD
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
November 5, 2026
Retailer 10$3,238 NZD
Retailer 2$3,595 NZD
Retailer 14$3,736 NZD
Retailer 11$3,796 NZD
Retailer 3$4,100 NZD
Retailer 5$4,100 NZD
Retailer 13$4,234 NZD
Retailer 15$4,291 NZD
Retailer 6$4,348 NZD
Retailer 4$4,732 NZD
Retailer 7$4,880 NZD
Retailer 9$5,097 NZD
Retailer 12$5,790 NZD
Retailer 8$7,165 NZD
NZ Jewellers$8,574 NZD

34 data points across 15 retailers

16 retailers$3,238 NZD to $8,574 NZD

Retailer 1
-
$2,446 NZD
Price last confirmed 43 days ago
B+
Retailer 2
-
$3,238 NZD
View
B+
Retailer 3
-
$3,595 NZD
View
B+
Retailer 4
-
$3,704 NZD
View
B+
Retailer 5
-
$3,736 NZD
View
B+
Retailer 6
-
$3,796 NZD
View
B+
Retailer 7
-
$4,100 NZD
View
Retailer 8
-
$4,100 NZD
View
Price last confirmed 12 days ago
B+
Retailer 9
-
$4,234 NZD
View
B+
Retailer 10
-
$4,291 NZD
View
B+
Retailer 11
-
$4,348 NZD
View
B+
Retailer 12
-
$4,732 NZD
View
B+
Retailer 13
-
$5,097 NZD
View
B+
Retailer 14
-
$5,790 NZD
View
B+
Retailer 15
-
$7,165 NZD
View
Most Expensive
B
NZ Jewellers
856628e2-e34b-42a0-82cc-1cc28a2772fb · Nov 5
$8,574 NZD
$4,820 USD
View
15 more retailers have this diamond
Prices start from $3,238 NZDSave up to $5,337 NZD

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.

B+
1.51ct Round
$3,238 NZD