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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 €1,788 EUR
As of November 6, 2026
Save €3,223 EUR (64%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: €5,011 EUR at NZ Jewellers · As of November 5, 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 20 retailers as of November 5, 2026, with prices from €1,788 to €5,011, a €3,223 spread on the same certified stone. NZ Jewellers lists it at €5,011. 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
Colour
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 6
Current: €5,011 EUR|Low: €1,765 EUR|High: €5,011 EUR|Avg: €2,739 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 13€1,788 EUR
Retailer 14€2,116 EUR
Retailer 5€2,147 EUR
Retailer 15€2,212 EUR
Retailer 3€2,360 EUR
Retailer 6€2,365 EUR
Retailer 7€2,397 EUR
Retailer 11€2,482 EUR
Retailer 4€2,489 EUR
Retailer 9€2,528 EUR
Retailer 8€2,648 EUR
Retailer 16€2,685 EUR
Retailer 12€2,925 EUR
Retailer 10€2,976 EUR
Retailer 2€4,176 EUR
NZ Jewellers€5,011 EUR

44 data points across 16 retailers

20 retailers€1,788 EUR to €5,011 EUR

B+
Cheapest Retailer
-
€1,788 EUR
B+
Retailer 2
-
€2,116 EUR
View
B+
Retailer 3
-
€2,147 EUR
View
B
Retailer 4
-
€2,212 EUR
View
Final sale: no returns
B+
Retailer 5
-
€2,322 EUR
View
B+
Retailer 6
-
€2,360 EUR
View
Retailer 7
-
€2,397 EUR
View
Price last confirmed 9 days ago
B+
Retailer 8
-
€2,397 EUR
View
B
Retailer 9
-
€2,482 EUR
View
B
Retailer 10
-
€2,489 EUR
View
B
Retailer 11
-
€2,523 EUR
View
B+
Retailer 12
-
€2,528 EUR
View
B
Retailer 13
-
€2,648 EUR
View
Retailer 14
-
€2,685 EUR
View
Price last confirmed 31 days ago
B
Retailer 15
-
€2,744 EUR
View
B
Retailer 16
-
€2,766 EUR
View
B
Retailer 17
-
€2,925 EUR
View
B
Retailer 18
-
€2,976 EUR
View
B
Retailer 19
-
€4,176 EUR
View
Most Expensive
B
NZ Jewellers
f3b42846-f509-4876-a79d-a14152981848 · Nov 5
€5,011 EUR
$5,595 USD
View
19 more retailers have this diamond
Prices start from €1,788 EURSave up to €3,223 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
€1,788 EUR