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Heart|Natural|GIA

1.21ct J SI1 Heart Natural Diamond

EX • J/SI1 • GIA 2508189179

Certificate GIA 2508189179

Diamond specifications and retailer prices

From €1,780 EUR
HK$15,600 HKD
As of November 1, 2026
Save €3,208 EUR (64%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: €4,988 EUR at NZ Jewellers · As of October 30, 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 2508189179. Listed at 21 retailers as of October 30, 2026, with prices from €1,780 to €4,988, a €3,208 spread on the same certified stone. NZ Jewellers lists it at €4,988. 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
PolishVery Good
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2508189179
Dimensions6.69 × 7.23 × 4.20 mm
L/W Ratio1.08
Top View
6.69 mm7.23 mm1.21 ctJ / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 2508189179
Side View
Table 56.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 58.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: €4,988 EUR|Low: €1,757 EUR|High: €4,988 EUR|Avg: €2,697 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
Retailer 17
Retailer 18
Retailer 19
Retailer 20
November 2, 2026
Retailer 16€1,780 EUR
Retailer 17€2,106 EUR
Retailer 4€2,137 EUR
Retailer 18€2,202 EUR
Retailer 20€2,349 EUR
Retailer 5€2,355 EUR
Retailer 6€2,386 EUR
Retailer 11€2,386 EUR
Retailer 10€2,471 EUR
Retailer 3€2,478 EUR
Retailer 9€2,512 EUR
Retailer 13€2,550 EUR
Retailer 7€2,636 EUR
Retailer 19€2,673 EUR
Retailer 8€2,733 EUR
Retailer 12€2,753 EUR
Retailer 15€2,933 EUR
Retailer 2€2,979 EUR
Retailer 14€4,180 EUR
NZ Jewellers€4,988 EUR

40 data points across 20 retailers

21 retailers€1,780 EUR to €4,988 EUR

B+
Cheapest Retailer
-
€1,780 EUR
HK$15,600 HKD
B+
Retailer 2
-
€2,106 EUR
$2,362 USD
View
B+
Retailer 3
-
€2,137 EUR
$2,397 USD
View
B
Retailer 4
-
€2,202 EUR
$2,470 USD
View
Final sale: no returns
B+
Retailer 5
-
€2,311 EUR
A$3,988 AUD
View
B+
Retailer 6
-
€2,349 EUR
$2,635 USD
View
Retailer 7
-
€2,355 EUR
£2,080 GBP
View
Price last confirmed 33 days ago
B+
Retailer 8
-
€2,386 EUR
$2,676 USD
View
B+
Retailer 9
-
€2,386 EUR
$2,676 USD
View
B
Retailer 10
-
€2,471 EUR
SGD 3,746 SGD
View
B
Retailer 11
-
€2,478 EUR
$2,779 USD
View
B
Retailer 12
-
€2,512 EUR
$2,817 USD
View
B
Retailer 13
-
€2,550 EUR
£2,252 GBP
View
B
Retailer 14
-
€2,636 EUR
$2,957 USD
View
Retailer 15
-
€2,673 EUR
A$4,613 AUD
View
Price last confirmed 25 days ago
B
Retailer 16
-
€2,733 EUR
$3,065 USD
View
B
Retailer 17
-
€2,753 EUR
$3,088 USD
View
B
Retailer 18
-
€2,933 EUR
ZAR 53,138 ZAR
View
B
Retailer 19
-
€2,979 EUR
View
B
Retailer 20
-
€4,180 EUR
£3,692 GBP
View
Most Expensive
B
NZ Jewellers
f3b42846-f509-4876-a79d-a14152981848 · Oct 30
€4,988 EUR
$5,595 USD
View
20 more retailers have this diamond
Prices start from €1,780 EURSave up to €3,208 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
€1,780 EUR