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Heart|Natural|GIA

1.21ct H SI2 Heart Natural Diamond

ID • H/SI2 • GIA 1558163586

Certificate GIA 1558163586

Diamond specifications and retailer prices

From €1,781 EUR
$1,998 USD
As of November 2, 2026
Save €2,232 EUR (56%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: €4,742 EUR at NZ Jewellers · As of October 21, 2026
View at NZ Jewellers

About this 1.21ct natural heart diamond

This 1.21ct natural heart sits in the classic one-carat band, graded H 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 1558163586. Listed at 14 retailers as of November 2, 2026, with a 125% 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

1.21
Carat
H
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1558163586
Dimensions6.55 × 7.18 × 4.32 mm
L/W Ratio1.10
Culet sizeNone
Key to symbols
Twinning Wisp, Needle, Indented Natural
Top View
6.55 mm7.18 mm1.21 ctH / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1558163586
Side View
Table 58.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 60.1%

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 2
Current: €4,742 EUR|Low: €1,581 EUR|High: €4,742 EUR|Avg: €2,679 EUR
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 2€1,781 EUR
Retailer 9€1,897 EUR
Retailer 7€2,055 EUR
Retailer 8€2,150 EUR
Retailer 3€2,264 EUR
Retailer 6€2,371 EUR
Retailer 4€2,859 EUR
Retailer 5€4,013 EUR
NZ Jewellers€4,742 EUR

40 data points across 9 retailers

14 retailers€1,781 EUR to €4,013 EUR

A
Cheapest Retailer
-
€1,781 EUR
$1,998 USD
A
Retailer 2
-
€1,790 EUR
$2,008 USD
View
A
Retailer 3
-
€1,897 EUR
$2,128 USD
View
Final sale: no returns
Retailer 4
-
€2,055 EUR
$2,305 USD
View
Price last confirmed 11 days ago
Retailer 5
-
€2,150 EUR
$2,411 USD
View
Price last confirmed 11 days ago
B+
Retailer 6
-
€2,175 EUR
$2,440 USD
View
B+
Retailer 7
-
€2,264 EUR
£2,000 GBP
View
Retailer 8
-
€2,371 EUR
$2,659 USD
View
Price last confirmed 11 days ago
B+
Retailer 9
-
€2,389 EUR
$2,680 USD
View
B+
Retailer 10
-
€2,389 EUR
$2,680 USD
View
B+
Retailer 11
-
€2,470 EUR
$2,770 USD
View
B+
Retailer 12
-
€2,859 EUR
View
B
Retailer 13
-
€4,013 EUR
£3,544 GBP
View
Most Expensive
NZ Jewellers
947fbdde-43a0-4ecc-abb4-39f7641ae374 · Oct 21
€4,742 EUR
$5,319 USD
View
Price last confirmed 13 days ago
13 more retailers have this diamond
Prices start from €1,781 EURSave up to €2,232 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
1.21ct Heart
€1,781 EUR