Heart|Natural|GIA

1.55ct K SI1 Heart Natural Diamond

VG • K/SI1 • GIA 2507568166

Certificate GIA 2507568166

Diamond specifications and retailer prices

From €5,919 EUR
As of November 6, 2026
14 retailers carry this diamond
Most expensive: €6,318 EUR 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
Colour
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: €5,919 EUR|Low: €2,916 EUR|High: €6,275 EUR|Avg: €3,882 EUR|+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€2,916 EUR
Retailer 2€2,983 EUR
Retailer 13€3,086 EUR
Retailer 11€3,286 EUR
Retailer 10€3,474 EUR
Retailer 5€3,493 EUR
Retailer 6€3,693 EUR
Retailer 3€3,708 EUR
Retailer 12€4,104 EUR
Retailer 4€4,279 EUR
Retailer 7€4,403 EUR
Retailer 1€5,919 EUR
Retailer 8€6,137 EUR

31 data points across 13 retailers

14 retailers

Retailer 1
-
€2,916 EUR
Price last confirmed 25 days ago
Retailer 2
-
€3,086 EUR
View
Price last confirmed 26 days ago
Retailer 3
-
€3,285 EUR
View
Price last confirmed 29 days ago
Retailer 4
-
€3,285 EUR
View
Price last confirmed 25 days ago
Retailer 5
-
€3,286 EUR
View
Price last confirmed 26 days ago
Retailer 6
-
€3,412 EUR
View
Price last confirmed 36 days ago
Retailer 7
-
€3,474 EUR
View
Price last confirmed 27 days ago
Retailer 8
-
€3,693 EUR
View
Price last confirmed 24 days ago
Retailer 9
-
€3,790 EUR
View
Price last confirmed 28 days ago
Retailer 10
-
€4,104 EUR
View
Price last confirmed 25 days ago
Retailer 11
-
€4,403 EUR
View
Price last confirmed 25 days ago
C
Retailer 12
-
€5,919 EUR
View
Retailer 13
-
€6,137 EUR
View
Price last confirmed 26 days ago
Most Expensive
NZ Jewellers
7fb79610-9bae-4e2e-870b-ea2ab4484357 · Sep 29
€6,318 EUR
$7,054 USD
View
Price last confirmed 38 days ago
13 more retailers have this diamond
Prices start from €5,919 EUR

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
€5,919 EUR