CaratHunter
Plans
Heart|Natural|GIA

1.21ct K SI1 Heart Natural Diamond

GD • K/SI1 • GIA 1146870344

Certificate GIA 1146870344

Diamond specifications and retailer prices

From €1,537 EUR
As of November 5, 2026
Save €1,716 EUR (53%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: €3,253 EUR at MOH London · As of November 4, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1146870344. Listed at 7 retailers as of November 4, 2026, with prices from €1,537 to €3,253, a €1,716 spread on the same certified stone. MOH London lists it at €3,253. 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
K
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryGood
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 1146870344
Dimensions6.05 × 8.74 × 4.04 mm
L/W Ratio1.44
Top View
6.05 mm8.74 mm1.21 ctK / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryGood
FluorescenceMedium
CertificateGIA 1146870344
Side View
Table 67.0%CrownGirdle: UND-VTKPavilionCulet: NoneDepth 46.2%

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 5
Current: €3,253 EUR|Low: €1,537 EUR|High: €3,302 EUR|Avg: €2,148 EUR|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 4€1,537 EUR
Retailer 3€1,687 EUR
Retailer 6€1,690 EUR
Retailer 5€1,833 EUR
Retailer 2€2,022 EUR
Retailer 8€2,416 EUR
Retailer 7€2,631 EUR
MOH London€3,253 EUR

37 data points across 8 retailers

7 retailers€1,537 EUR to €3,253 EUR

B+
Cheapest Retailer
-
€1,537 EUR
Retailer 2
-
€1,687 EUR
View
Price last confirmed 8 days ago
B+
Retailer 3
-
€1,690 EUR
View
B
Retailer 4
-
€1,833 EUR
View
B
Retailer 5
-
€2,022 EUR
View
C
Retailer 6
-
€2,631 EUR
View
Most Expensive
C
MOH London
A268D12B1 · Nov 4
€3,253 EUR
£2,860 GBP
View
6 more retailers have this diamond
Prices start from €1,537 EURSave up to €1,716 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
€1,537 EUR