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Heart|Natural|GIA

1.51ct H SI1 Heart Natural Diamond

EX • H/SI1 • GIA 7546607780

Certificate GIA 7546607780

Diamond specifications and retailer prices

From €3,636 EUR
$4,062 USD
As of November 1, 2026
Save €3,893 EUR (52%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: €8,656 EUR at NZ Jewellers · As of September 25, 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7546607780. Listed at 21 retailers as of November 1, 2026, with a 107% 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
H
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 7546607780
Dimensions6.80 × 7.95 × 4.72 mm
L/W Ratio1.17
Girdle conditionFaceted
Top View
6.80 mm7.95 mm1.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7546607780
Side View
Table 59.0%CrownGirdle: MED-THKPavilion 41.2°Culet: NoneDepth 59.3%

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 1
Current: €3,655 EUR|Low: €3,591 EUR|High: €8,114 EUR|Avg: €4,862 EUR|-4.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 2, 2026
Retailer 16€3,636 EUR
Retailer 1€3,655 EUR
Retailer 14€3,854 EUR
Retailer 12€4,006 EUR
Retailer 7€4,077 EUR
Retailer 18€4,091 EUR
Retailer 8€4,117 EUR
Retailer 5€4,124 EUR
Retailer 4€4,348 EUR
Retailer 15€4,404 EUR
Retailer 3€4,625 EUR
Retailer 13€4,675 EUR
Retailer 9€4,929 EUR
Retailer 10€5,055 EUR
Retailer 2€5,929 EUR
Retailer 11€6,006 EUR
Retailer 17€7,529 EUR
Retailer 6€7,651 EUR

26 data points across 18 retailers

21 retailers€3,636 EUR to €7,529 EUR

A
Cheapest Retailer
-
€3,636 EUR
$4,062 USD
A
Retailer 2
-
€3,655 EUR
HK$31,900 HKD
View
A
Retailer 3
-
€3,854 EUR
$4,306 USD
View
B+
Retailer 4
-
€4,006 EUR
$4,476 USD
View
Final sale: no returns
A
Retailer 5
-
€4,077 EUR
$4,555 USD
View
A
Retailer 6
-
€4,091 EUR
View
A
Retailer 7
-
€4,117 EUR
$4,600 USD
View
A
Retailer 8
-
€4,124 EUR
$4,607 USD
View
B+
Retailer 9
-
€4,348 EUR
$4,858 USD
View
B+
Retailer 10
-
€4,404 EUR
$4,920 USD
View
B+
Retailer 11
-
€4,625 EUR
$5,167 USD
View
Retailer 12
-
€4,625 EUR
$5,167 USD
View
Price last confirmed 12 days ago
B+
Retailer 13
-
€4,675 EUR
£4,113 GBP
View
B+
Retailer 14
-
€4,929 EUR
SGD 7,441 SGD
View
Retailer 15
-
€5,055 EUR
A$8,689 AUD
View
Price last confirmed 23 days ago
B
Retailer 16
-
€5,322 EUR
A$9,148 AUD
View
B+
Retailer 17
-
€5,929 EUR
ZAR 107,001 ZAR
View
B+
Retailer 18
-
€6,006 EUR
$6,710 USD
View
B
Retailer 19
-
€7,529 EUR
£6,623 GBP
View
Retailer 20
-
€7,651 EUR
$8,548 USD
View
Price last confirmed 9 days ago
Most Expensive
NZ Jewellers
dbf135a3-0579-43ef-9381-30a46e39cd96 · Sep 25
€8,656 EUR
$9,670 USD
View
Price last confirmed 38 days ago
20 more retailers have this diamond
Prices start from €3,636 EURSave up to €3,893 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
€3,636 EUR