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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 $1,000 SGD
As of November 6, 2026
Save $2,857 SGD (74%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $3,856 SGD 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 $1,000 to $3,856, a $2,857 spread on the same certified stone. NZ Jewellers lists it at $3,856. 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: $3,856 SGD|Low: $1,000 SGD|High: $3,856 SGD|Avg: $1,688 SGD
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$1,000 SGD
Retailer 6$1,229 SGD
Retailer 10$1,230 SGD
Retailer 8$1,276 SGD
Retailer 5$1,419 SGD
Retailer 4$1,760 SGD
Retailer 7$1,801 SGD
Retailer 9$2,249 SGD
Retailer 3$2,353 SGD
NZ Jewellers$3,856 SGD

39 data points across 10 retailers

12 retailers$1,000 SGD to $3,856 SGD

A
Cheapest Retailer
-
$1,000 SGD
B+
Retailer 2
-
$1,229 SGD
View
B+
Retailer 3
-
$1,230 SGD
View
B+
Retailer 4
-
$1,276 SGD
View
B+
Retailer 5
-
$1,400 SGD
View
B+
Retailer 6
-
$1,419 SGD
View
B+
Retailer 7
-
$1,434 SGD
View
B
Retailer 8
-
$1,760 SGD
View
B
Retailer 9
-
$1,801 SGD
View
B
Retailer 10
-
$2,249 SGD
View
B
Retailer 11
-
$2,353 SGD
View
Most Expensive
C
NZ Jewellers
44d00f5c-79bb-4548-a36f-0451d9eb35a0 · Nov 5
$3,856 SGD
$3,009 USD
View
11 more retailers have this diamond
Prices start from $1,000 SGDSave up to $2,857 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
0.90ct Heart
$1,000 SGD