Heart|Natural|GIA

1.55ct K SI1 Heart Natural Diamond

VG • K/SI1 • GIA 2507568166

Certificate GIA 2507568166

Diamond specifications and retailer prices

From $6,609 USD
As of November 6, 2026
14 retailers carry this diamond
Most expensive: $7,054 USD at NZ Jewellers · As of September 29, 2026
View at NZ Jewellers

About this 1.55ct natural heart diamond

This 1.55ct 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 stated by the retailer rather than the lab and certified by GIA 2507568166. Listed at 14 retailers as of November 6, 2026. 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

1.55
Carat
K
Color
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2507568166
Dimensions7.88 × 7.21 × 4.17 mm
L/W Ratio1.09
Top View
7.88 mm7.21 mm1.55 ctK / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2507568166
Side View
Table 57.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 57.9%

Caratlytics Score

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C
Average
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Price History

Last verified: Nov 6
Current: $6,609 USD|Low: $3,256 USD|High: $7,006 USD|Avg: $4,334 USD|+41.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 9$3,256 USD
Retailer 2$3,330 USD
Retailer 13$3,445 USD
Retailer 11$3,669 USD
Retailer 10$3,879 USD
Retailer 5$3,900 USD
Retailer 6$4,123 USD
Retailer 3$4,140 USD
Retailer 12$4,582 USD
Retailer 4$4,777 USD
Retailer 7$4,916 USD
Retailer 1$6,609 USD
Retailer 8$6,852 USD

30 data points across 13 retailers

14 retailers

Retailer 1
-
$3,256 USD
Price last confirmed 26 days ago
Retailer 2
-
$3,445 USD
View
Price last confirmed 27 days ago
Retailer 3
-
$3,668 USD
View
Price last confirmed 30 days ago
Retailer 4
-
$3,668 USD
View
Price last confirmed 26 days ago
Retailer 5
-
$3,669 USD
View
Price last confirmed 27 days ago
Retailer 6
-
$3,809 USD
View
Price last confirmed 37 days ago
Retailer 7
-
$3,879 USD
View
Price last confirmed 28 days ago
Retailer 8
-
$4,123 USD
View
Price last confirmed 25 days ago
Retailer 9
-
$4,232 USD
View
Price last confirmed 29 days ago
Retailer 10
-
$4,582 USD
View
Price last confirmed 26 days ago
Retailer 11
-
$4,916 USD
View
Price last confirmed 26 days ago
C
Retailer 12
-
$6,609 USD
View
Retailer 13
-
$6,852 USD
View
Price last confirmed 27 days ago
Most Expensive
NZ Jewellers
7fb79610-9bae-4e2e-870b-ea2ab4484357 · Sep 29
$7,054 USD
View
Price last confirmed 38 days ago
13 more retailers have this diamond
Prices start from $6,609 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.

C
1.55ct Heart
$6,609 USD