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Heart|Natural|GIA

1.51ct I SI1 Heart Natural Diamond

VG • I/SI1 • GIA 1439777400

Certificate GIA 1439777400

Diamond specifications and retailer prices

From €2,408 EUR
As of November 6, 2026
Save €3,076 EUR (56%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: €5,484 EUR at MOH London · As of November 4, 2026
View at MOH London

About this 1.51ct natural heart diamond

This 1.51ct natural heart sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1439777400. Listed at 16 retailers as of November 4, 2026, with prices from €2,408 to €5,484, a €3,076 spread on the same certified stone. MOH London lists it at €5,484. 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

1.51
Carat
I
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.26°
Pavilion angle55.01°
OriginNatural
Grading LabGIA
CertificateGIA 1439777400
Dimensions6.39 × 6.34 × 4.43 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Feather, Crystal, Needle
Top View
6.39 mm6.34 mm1.51 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1439777400
Side View
Table 62.0%Crown 42.26°Girdle: MED-STKPavilion 55.01°Culet: NoneDepth 69.8%

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: €5,484 EUR|Low: €2,408 EUR|High: €5,565 EUR|Avg: €3,512 EUR|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 10€2,408 EUR
Retailer 8€2,756 EUR
Retailer 11€3,034 EUR
Retailer 2€3,086 EUR
Retailer 4€3,103 EUR
Retailer 6€3,354 EUR
Retailer 9€3,404 EUR
Retailer 3€3,522 EUR
Retailer 5€3,827 EUR
Retailer 7€4,013 EUR
MOH London€5,484 EUR

34 data points across 11 retailers

16 retailers€2,408 EUR to €5,484 EUR

A
Cheapest Retailer
-
€2,408 EUR
A
Retailer 2
-
€2,756 EUR
View
A
Retailer 3
-
€2,897 EUR
View
A
Retailer 4
-
€2,919 EUR
View
B+
Retailer 5
-
€3,034 EUR
View
Final sale: no returns
B+
Retailer 6
-
€3,086 EUR
View
A
Retailer 7
-
€3,103 EUR
View
B+
Retailer 8
-
€3,153 EUR
View
B+
Retailer 9
-
€3,354 EUR
View
A
Retailer 10
-
€3,404 EUR
View
B+
Retailer 11
-
€3,418 EUR
View
Retailer 12
-
€3,522 EUR
View
Price last confirmed 30 days ago
B+
Retailer 13
-
€3,827 EUR
View
B+
Retailer 14
-
€4,013 EUR
View
B
Retailer 15
-
€4,665 EUR
View
Most Expensive
B
MOH London
C664DE5D8 · Nov 4
€5,484 EUR
£4,821 GBP
View
15 more retailers have this diamond
Prices start from €2,408 EURSave up to €3,076 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
1.51ct Heart
€2,408 EUR