Heart|Natural|GIA

1.21ct J SI1 Heart Natural Diamond

GD • J/SI1 • GIA 7458197631

Certificate GIA 7458197631

Diamond specifications and retailer prices

From €1,868 EUR
As of November 6, 2026
Save €1,702 EUR (48%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: €3,571 EUR at MOH London · As of November 7, 2026
View at MOH London

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 standard cut grade stated by the retailer rather than the lab and certified by GIA 7458197631. Listed at 12 retailers as of November 6, 2026, with prices from €1,868 to €3,571, a €1,702 spread on the same certified stone. MOH London lists it at €3,571. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.21
Carat
J
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7458197631
Dimensions6.47 × 5.84 × 3.91 mm
L/W Ratio1.11
Top View
6.47 mm5.84 mm1.21 ctJ / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 7458197631
Side View
Table 65.0%CrownGirdle: ThickPavilionCulet: NoneDepth 67.0%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: €3,571 EUR|Low: €1,557 EUR|High: €3,667 EUR|Avg: €2,357 EUR|-1.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 7, 2026
Retailer 7€1,868 EUR
Retailer 2€1,891 EUR
Retailer 9€2,005 EUR
Retailer 6€2,069 EUR
Retailer 5€2,073 EUR
Retailer 4€2,524 EUR
Retailer 3€2,544 EUR
Retailer 8€2,555 EUR
MOH London€3,571 EUR

38 data points across 9 retailers

12 retailers€1,868 EUR to €3,571 EUR

B+
Cheapest Retailer
-
€1,868 EUR
B+
Retailer 2
-
€1,891 EUR
View
Final sale: no returns
B
Retailer 3
-
€2,005 EUR
View
B
Retailer 4
-
€2,069 EUR
View
B
Retailer 5
-
€2,073 EUR
View
B
Retailer 6
-
€2,086 EUR
View
B
Retailer 7
-
€2,193 EUR
View
B
Retailer 8
-
€2,269 EUR
View
B
Retailer 9
-
€2,524 EUR
View
B
Retailer 10
-
€2,544 EUR
View
Retailer 11
-
€2,555 EUR
View
Price last confirmed 34 days ago
Most Expensive
C
MOH London
CA0DCDDA5 · Nov 7
€3,571 EUR
£3,139 GBP
View
11 more retailers have this diamond
Prices start from €1,868 EURSave up to €1,702 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
€1,868 EUR