Heart|Natural|GIA

1.51ct I SI2 Heart Natural Diamond

EX • I/SI2 • GIA 6395991628

Certificate GIA 6395991628

Diamond specifications and retailer prices

From €3,920 EUR
£3,462 GBP
As of November 2, 2026
Save €4,617 EUR (54%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: €8,537 EUR at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.51ct natural heart diamond

This 1.51ct natural heart sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6395991628. Listed at 17 retailers as of October 30, 2026, with prices from €3,920 to €8,537, a €4,617 spread on the same certified stone. NZ Jewellers lists it at €8,537. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6395991628
Dimensions7.21 × 7.86 × 4.42 mm
L/W Ratio1.09
Top View
7.21 mm7.86 mm1.51 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6395991628
Side View
Table 60.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 56.3%

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 2
Current: €8,537 EUR|Low: €3,824 EUR|High: €8,537 EUR|Avg: €5,775 EUR
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 4€3,920 EUR
Retailer 7€3,968 EUR
Retailer 2€4,859 EUR
Retailer 6€5,104 EUR
Retailer 3€5,775 EUR
Retailer 5€7,977 EUR
NZ Jewellers€8,537 EUR

44 data points across 7 retailers

17 retailers€3,920 EUR to €8,537 EUR

A
Cheapest Retailer
-
€3,920 EUR
£3,462 GBP
B+
Retailer 2
-
€3,968 EUR
$4,450 USD
View
B+
Retailer 3
-
€4,208 EUR
$4,720 USD
View
B+
Retailer 4
-
€4,208 EUR
$4,720 USD
View
B+
Retailer 5
-
€4,319 EUR
$4,844 USD
View
B+
Retailer 6
-
€4,351 EUR
$4,880 USD
View
B+
Retailer 7
-
€4,452 EUR
$4,993 USD
View
B+
Retailer 8
-
€4,859 EUR
£4,291 GBP
View
B
Retailer 9
-
€5,040 EUR
$5,653 USD
View
B
Retailer 10
-
€5,104 EUR
$5,725 USD
View
B
Retailer 11
-
€5,104 EUR
$5,725 USD
View
B
Retailer 12
-
€5,104 EUR
$5,725 USD
View
B
Retailer 13
-
€5,242 EUR
$5,880 USD
View
B+
Retailer 14
-
€5,775 EUR
View
B
Retailer 15
-
€5,889 EUR
$6,605 USD
View
B
Retailer 16
-
€7,977 EUR
£7,045 GBP
View
Most Expensive
B
NZ Jewellers
1fc45747-6b72-4cb9-9f11-25bbf6aa3c05 · Oct 30
€8,537 EUR
$9,575 USD
View
16 more retailers have this diamond
Prices start from €3,920 EURSave up to €4,617 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.

A
1.51ct Heart
€3,920 EUR