Heart|Natural|GIA

1.21ct J SI1 Heart Natural Diamond

EX • J/SI1 • GIA 6551539989

Certificate GIA 6551539989

Diamond specifications and retailer prices

From €1,807 EUR
A$3,118 AUD
As of November 2, 2026
Save €57 EUR (3%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: €3,968 EUR at NZ Jewellers · As of October 18, 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 J 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 6551539989. Listed at 8 retailers as of October 29, 2026, with a relatively tight 3% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
J
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle38.94°
OriginNatural
Grading LabGIA
CertificateGIA 6551539989
Dimensions6.66 × 7.25 × 3.96 mm
L/W Ratio1.09
Key to symbols
Crystal, Feather, Needle
Top View
6.66 mm7.25 mm1.21 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551539989
Side View
Table 56.0%CrownGirdle: STK-VTKPavilion 38.94°Culet: NoneDepth 59.4%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 2
Current: €2,222 EUR|Low: €1,187 EUR|High: €3,058 EUR|Avg: €1,955 EUR|-11.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 18, 2026
Retailer 3€1,187 EUR
Retailer 5€1,626 EUR
Retailer 4€1,661 EUR
Retailer 6€1,807 EUR
Retailer 1€2,222 EUR
Retailer 2€2,865 EUR

19 data points across 6 retailers

8 retailers€1,807 EUR to €1,864 EUR

Retailer 1
-
€1,187 EUR
HK$10,400 HKD
Price last confirmed 11 days ago
Retailer 2
-
€1,626 EUR
$1,824 USD
View
Price last confirmed 15 days ago
Retailer 3
-
€1,661 EUR
SGD 2,517 SGD
View
Price last confirmed 14 days ago
Retailer 4
-
€1,702 EUR
$1,909 USD
View
Price last confirmed 17 days ago
B+
Retailer 5
-
€1,807 EUR
A$3,118 AUD
View
B+
Retailer 6
-
€1,864 EUR
A$3,216 AUD
View
Retailer 7
-
€2,865 EUR
£2,530 GBP
View
Price last confirmed 14 days ago
Most Expensive
NZ Jewellers
4099ec2c-22ce-42b7-a61e-fb17aa557a1b · Oct 18
€3,968 EUR
$4,450 USD
View
Price last confirmed 15 days ago
7 more retailers have this diamond
Prices start from €1,807 EURSave up to €57 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.

B+
1.21ct Heart
€1,807 EUR