Heart|Natural|GIA

1.20ct H SI1 Heart Natural Diamond

ID • H/SI1 • GIA 3545938134

Certificate GIA 3545938134

Diamond specifications and retailer prices

From €1,902 EUR
As of November 6, 2026
Save €2,447 EUR (56%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: €5,248 EUR at NZ Jewellers · As of October 18, 2026
View at NZ Jewellers

About this 1.2ct natural heart diamond

This 1.2ct natural heart sits in the classic one-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 3545938134. Listed at 22 retailers as of November 6, 2026, with a 129% 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

1.20
Carat
H
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 3545938134
Dimensions6.60 × 7.51 × 4.44 mm
L/W Ratio1.14
Top View
6.60 mm7.51 mm1.20 ctH / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 3545938134
Side View
Table 63.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 59.1%

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 6
Current: €5,248 EUR|Low: €1,902 EUR|High: €5,248 EUR|Avg: €3,060 EUR
NZ Jewellers
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
November 7, 2026
Retailer 3€1,902 EUR
Retailer 10€1,980 EUR
Retailer 14€2,237 EUR
Retailer 5€2,304 EUR
Retailer 15€2,351 EUR
Retailer 11€2,421 EUR
Retailer 8€2,510 EUR
Retailer 4€2,622 EUR
Retailer 12€2,639 EUR
Retailer 9€2,641 EUR
Retailer 16€2,714 EUR
Retailer 7€2,897 EUR
Retailer 13€3,046 EUR
Retailer 2€4,349 EUR
Retailer 6€5,163 EUR
NZ Jewellers€5,248 EUR

24 data points across 16 retailers

22 retailers€1,902 EUR to €4,349 EUR

A
Cheapest Retailer
-
€1,902 EUR
A
Retailer 2
-
€1,980 EUR
View
B+
Retailer 3
-
€2,237 EUR
View
B+
Retailer 4
-
€2,304 EUR
View
Final sale: no returns
B+
Retailer 5
-
€2,351 EUR
View
B+
Retailer 6
-
€2,376 EUR
View
B+
Retailer 7
-
€2,378 EUR
View
B+
Retailer 8
-
€2,421 EUR
View
Retailer 9
-
€2,510 EUR
View
Price last confirmed 20 days ago
Retailer 10
-
€2,536 EUR
View
Price last confirmed 22 days ago
B+
Retailer 11
-
€2,622 EUR
View
Retailer 12
-
€2,633 EUR
View
Price last confirmed 22 days ago
B+
Retailer 13
-
€2,639 EUR
View
B+
Retailer 14
-
€2,641 EUR
View
B+
Retailer 15
-
€2,694 EUR
View
B+
Retailer 16
-
€2,714 EUR
View
Retailer 17
-
€2,856 EUR
View
Price last confirmed 31 days ago
Retailer 18
-
€2,897 EUR
View
Price last confirmed 19 days ago
B+
Retailer 19
-
€3,046 EUR
View
B
Retailer 20
-
€4,349 EUR
View
Retailer 21
-
€5,163 EUR
View
Price last confirmed 10 days ago
Most Expensive
NZ Jewellers
dd034e2e-e7de-4487-a812-4eff1fbf8c7e · Oct 18
€5,248 EUR
$5,859 USD
View
Price last confirmed 20 days ago
21 more retailers have this diamond
Prices start from €1,902 EURSave up to €2,447 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
1.20ct Heart
€1,902 EUR