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Heart|Natural|GIA

1.51ct I SI2 Heart Natural Diamond

EX • I/SI2 • GIA 1543577711

Certificate GIA 1543577711

Diamond specifications and retailer prices

From €2,682 EUR
HK$23,500 HKD
As of November 2, 2026
Save €3,202 EUR (54%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: €6,864 EUR at NZ Jewellers · As of September 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 1543577711. Listed at 17 retailers as of November 2, 2026, with a 119% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1543577711
Dimensions7.23 × 7.94 × 4.63 mm
L/W Ratio1.10
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Cloud, Feather, Crystal, Cavity, Needle
Top View
7.23 mm7.94 mm1.51 ctI / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1543577711
Side View
Table 63.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 58.3%

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: €3,599 EUR|Low: €2,682 EUR|High: €6,351 EUR|Avg: €3,762 EUR|-9.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 3, 2026
Retailer 6€2,682 EUR
Retailer 5€2,856 EUR
Retailer 9€3,247 EUR
Retailer 2€3,405 EUR
Retailer 10€3,488 EUR
Retailer 1€3,599 EUR
Retailer 8€3,649 EUR
Retailer 4€3,673 EUR
Retailer 7€3,981 EUR
Retailer 3€5,883 EUR

38 data points across 10 retailers

17 retailers€2,682 EUR to €5,883 EUR

A
Cheapest Retailer
-
€2,682 EUR
HK$23,500 HKD
A
Retailer 2
-
€2,856 EUR
₹305,107 INR
View
A
Retailer 3
-
€3,247 EUR
$3,642 USD
View
Final sale: no returns
Retailer 4
-
€3,405 EUR
SGD 5,161 SGD
View
Price last confirmed 7 days ago
A
Retailer 5
-
€3,488 EUR
SGD 5,286 SGD
View
A
Retailer 6
-
€3,599 EUR
£3,178 GBP
View
B+
Retailer 7
-
€3,626 EUR
$4,067 USD
View
B+
Retailer 8
-
€3,649 EUR
$4,093 USD
View
B+
Retailer 9
-
€3,673 EUR
$4,120 USD
View
B+
Retailer 10
-
€3,853 EUR
A$6,648 AUD
View
Retailer 11
-
€3,940 EUR
$4,419 USD
View
Price last confirmed 26 days ago
Retailer 12
-
€3,940 EUR
$4,419 USD
View
Price last confirmed 33 days ago
Retailer 13
-
€3,940 EUR
$4,419 USD
View
Price last confirmed 26 days ago
B+
Retailer 14
-
€3,981 EUR
View
Retailer 15
-
€4,546 EUR
$5,099 USD
View
Price last confirmed 35 days ago
B
Retailer 16
-
€5,883 EUR
£5,196 GBP
View
Most Expensive
NZ Jewellers
ee8781a8-47d7-4023-85f6-2e41dd61f5b5 · Sep 30
€6,864 EUR
$7,699 USD
View
Price last confirmed 33 days ago
16 more retailers have this diamond
Prices start from €2,682 EURSave up to €3,202 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
€2,682 EUR