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Heart|Natural|IGI

0.90ct K SI1 Heart Natural Diamond

VG • K/SI1 • IGI 818638390

Shape and cutting style on the report: Heart brilliant

Certificate IGI 818638390

Diamond specifications and retailer prices

From $1,407 NZD
As of November 6, 2026
Save $4,021 NZD (74%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $5,428 NZD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 0.9ct natural heart diamond

This 0.9ct natural heart sits in the just-under-one-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 818638390. Listed at 12 retailers as of November 5, 2026, with prices from $1,407 to $5,428, a $4,021 spread on the same certified stone. NZ Jewellers lists it at $5,428. 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

0.90
Carat
K
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.7°
Pavilion angle40.5°
OriginNatural
Grading LabIGI
CertificateIGI 818638390
Dimensions5.86 × 6.43 × 4.10 mm
L/W Ratio1.10
Girdle conditionFaceted
Top View
5.86 mm6.43 mm0.90 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 818638390
Side View
Table 57.0%Crown 39.7°Girdle: STK-THKPavilion 40.5°Culet: NoneDepth 63.8%

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: $5,428 NZD|Low: $1,407 NZD|High: $5,428 NZD|Avg: $2,376 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 2$1,407 NZD
Retailer 6$1,730 NZD
Retailer 10$1,732 NZD
Retailer 8$1,797 NZD
Retailer 5$1,997 NZD
Retailer 4$2,477 NZD
Retailer 7$2,534 NZD
Retailer 9$3,166 NZD
Retailer 3$3,312 NZD
NZ Jewellers$5,428 NZD

39 data points across 10 retailers

12 retailers$1,407 NZD to $5,428 NZD

A
Cheapest Retailer
-
$1,407 NZD
B+
Retailer 2
-
$1,730 NZD
View
B+
Retailer 3
-
$1,732 NZD
View
B+
Retailer 4
-
$1,797 NZD
View
B+
Retailer 5
-
$1,970 NZD
View
B+
Retailer 6
-
$1,997 NZD
View
B+
Retailer 7
-
$2,019 NZD
View
B
Retailer 8
-
$2,477 NZD
View
B
Retailer 9
-
$2,534 NZD
View
B
Retailer 10
-
$3,166 NZD
View
B
Retailer 11
-
$3,312 NZD
View
Most Expensive
C
NZ Jewellers
44d00f5c-79bb-4548-a36f-0451d9eb35a0 · Nov 5
$5,428 NZD
$3,009 USD
View
11 more retailers have this diamond
Prices start from $1,407 NZDSave up to $4,021 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.

A
0.90ct Heart
$1,407 NZD