CaratHunter
Plans
Heart|Natural|GIA

1.21ct J SI1 Heart Natural Diamond

EX • J/SI1 • GIA 2245042739

Certificate GIA 2245042739

Diamond specifications and retailer prices

From €1,461 EUR
HK$12,800 HKD
As of November 1, 2026
Save €2,699 EUR (65%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: €4,160 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 2245042739. Listed at 12 retailers as of October 30, 2026, with prices from €1,461 to €4,160, a €2,699 spread on the same certified stone. NZ Jewellers lists it at €4,160. 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
Pavilion angle38.94°
OriginNatural
Grading LabGIA
CertificateGIA 2245042739
Dimensions6.61 × 7.21 × 4.29 mm
L/W Ratio1.09
Key to symbols
Twinning Wisp, Feather, Crystal, Needle
Top View
6.61 mm7.21 mm1.21 ctJ / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 2245042739
Side View
Table 62.0%CrownGirdle: THK-VTKPavilion 38.94°Culet: NoneDepth 59.5%

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 1
Current: €4,160 EUR|Low: €1,449 EUR|High: €4,439 EUR|Avg: €2,542 EUR|-6.3%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 7€1,461 EUR
Retailer 6€1,854 EUR
Retailer 4€1,941 EUR
Retailer 9€1,990 EUR
Retailer 3€2,034 EUR
Retailer 8€2,082 EUR
Retailer 11€2,186 EUR
Retailer 5€2,469 EUR
Retailer 10€3,033 EUR
Retailer 2€3,486 EUR
NZ Jewellers€4,160 EUR

39 data points across 11 retailers

12 retailers€1,461 EUR to €4,160 EUR

A
Cheapest Retailer
-
€1,461 EUR
HK$12,800 HKD
B+
Retailer 2
-
€1,854 EUR
$2,080 USD
View
B+
Retailer 3
-
€1,941 EUR
£1,714 GBP
View
B+
Retailer 4
-
€1,990 EUR
$2,232 USD
View
B+
Retailer 5
-
€2,034 EUR
SGD 3,083 SGD
View
B+
Retailer 6
-
€2,082 EUR
$2,335 USD
View
B+
Retailer 7
-
€2,186 EUR
$2,452 USD
View
B
Retailer 8
-
€2,201 EUR
A$3,798 AUD
View
B+
Retailer 9
-
€2,469 EUR
View
B
Retailer 10
-
€3,033 EUR
View
B
Retailer 11
-
€3,486 EUR
£3,079 GBP
View
Most Expensive
B
NZ Jewellers
4f1787ab-5746-4b1c-9857-b23407ac4cfd · Oct 30
€4,160 EUR
$4,666 USD
View
11 more retailers have this diamond
Prices start from €1,461 EURSave up to €2,699 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
€1,461 EUR