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Heart|Natural|IGI

1.50ct K SI1 Heart Natural Diamond

VG • K/SI1 • IGI 681559672

Shape and cutting style on the report: Heart brilliant

Certificate IGI 681559672

Diamond specifications and retailer prices

From $1,511 USD
As of November 5, 2026
Save $1,938 USD (56%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $4,388 USD at NZ Jewellers · As of September 20, 2026
View at NZ Jewellers

About this 1.5ct natural heart diamond

This 1.5ct natural heart 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 681559672. Listed at 15 retailers as of November 4, 2026, with a 128% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.50
Carat
K
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.3°
Pavilion angle35.8°
OriginNatural
Grading LabIGI
CertificateIGI 681559672
Dimensions6.88 × 7.88 × 4.54 mm
L/W Ratio1.15
Girdle conditionFaceted
Culet sizePointed
Top View
6.88 mm7.88 mm1.50 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 681559672
Side View
Table 60.0%Crown 39.3°Girdle: STK-VTKPavilion 35.8°Culet: NoneDepth 57.6%

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 5
Current: $1,819 USD|Low: $1,511 USD|High: $3,573 USD|Avg: $2,331 USD|-39.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 8$1,511 USD
Retailer 1$1,819 USD
Retailer 3$1,925 USD
Retailer 7$1,963 USD
Retailer 12$1,979 USD
Retailer 11$1,990 USD
Retailer 4$1,993 USD
Retailer 2$2,075 USD
Retailer 9$2,409 USD
Retailer 5$2,874 USD
Retailer 6$3,328 USD
Retailer 10$3,449 USD

23 data points across 12 retailers

15 retailers$1,511 USD to $3,449 USD

A
Cheapest Retailer
-
$1,511 USD
B+
Retailer 2
-
$1,819 USD
View
A
Retailer 3
-
$1,925 USD
View
A
Retailer 4
-
$1,963 USD
View
A
Retailer 5
-
$1,979 USD
View
B+
Retailer 6
-
$1,990 USD
View
Retailer 7
-
$1,993 USD
View
Price last confirmed 8 days ago
A
Retailer 8
-
$2,075 USD
View
Retailer 9
-
$2,099 USD
View
Price last confirmed 45 days ago
B+
Retailer 10
-
$2,130 USD
View
B+
Retailer 11
-
$2,409 USD
View
B+
Retailer 12
-
$2,874 USD
View
B+
Retailer 13
-
$3,328 USD
View
B+
Retailer 14
-
$3,449 USD
View
Most Expensive
NZ Jewellers
894ea465-fda4-48ff-a268-5fac68c966c3 · Sep 20
$4,388 USD
View
Price last confirmed 46 days ago
14 more retailers have this diamond
Prices start from $1,511 USDSave up to $1,938 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
1.50ct Heart
$1,511 USD