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Heart|Natural|GIA

1.21ct D SI2 Heart Natural Diamond

EX • D/SI2 • GIA 1545265538

Certificate GIA 1545265538

Diamond specifications and retailer prices

From €2,121 EUR
As of November 6, 2026
Save €2,524 EUR (54%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: €5,403 EUR at Queensmith · As of October 28, 2026
View at Queensmith

About this 1.21ct natural heart diamond

This 1.21ct natural heart sits in the classic one-carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1545265538. Listed at 20 retailers as of November 4, 2026, with a 119% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
D
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1545265538
Dimensions7.33 × 6.74 × 4.30 mm
L/W Ratio1.09
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Crystal, Cloud, Cavity, Needle
Top View
7.33 mm6.74 mm1.21 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1545265538
Side View
Table 63.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 58.6%

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 6
Current: €5,403 EUR|Low: €2,109 EUR|High: €5,420 EUR|Avg: €3,113 EUR|+2.3%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 9€2,121 EUR
Retailer 2€2,209 EUR
Retailer 7€2,500 EUR
Retailer 3€2,567 EUR
Retailer 11€2,571 EUR
Retailer 6€2,881 EUR
Retailer 10€2,914 EUR
Retailer 5€2,949 EUR
Retailer 4€3,243 EUR
Retailer 8€4,645 EUR
Queensmith€5,403 EUR

30 data points across 11 retailers

20 retailers€2,121 EUR to €4,645 EUR

A
Cheapest Retailer
-
€2,121 EUR
A
Retailer 2
-
€2,209 EUR
View
B+
Retailer 3
-
€2,500 EUR
View
B+
Retailer 4
-
€2,567 EUR
View
B+
Retailer 5
-
€2,571 EUR
View
Final sale: no returns
B+
Retailer 6
-
€2,631 EUR
View
Retailer 7
-
€2,801 EUR
View
Price last confirmed 20 days ago
Retailer 8
-
€2,801 EUR
View
Price last confirmed 22 days ago
Retailer 9
-
€2,816 EUR
View
Price last confirmed 46 days ago
B+
Retailer 10
-
€2,881 EUR
View
Retailer 11
-
€2,908 EUR
View
Price last confirmed 22 days ago
B+
Retailer 12
-
€2,914 EUR
View
B+
Retailer 13
-
€2,949 EUR
View
Retailer 14
-
€3,232 EUR
View
Price last confirmed 19 days ago
B+
Retailer 15
-
€3,243 EUR
View
Retailer 16
-
€3,249 EUR
View
Price last confirmed 46 days ago
B
Retailer 17
-
€4,645 EUR
View
Retailer 18
-
€4,880 EUR
View
Price last confirmed 20 days ago
Retailer 19
-
€4,906 EUR
View
Price last confirmed 48 days ago
Most Expensive
Queensmith
1545265538 · Oct 28
€5,403 EUR
£4,750 GBP
View
Price last confirmed 9 days ago
19 more retailers have this diamond
Prices start from €2,121 EURSave up to €2,524 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
€2,121 EUR