CaratHunter
Plans
Heart|Natural|GIA

2.51ct E SI1 Heart Natural Diamond

ID • E/SI1 • GIA 1548181494

Certificate GIA 1548181494

Diamond specifications and retailer prices

From $19,775 AUD
£10,938 GBP
As of October 31, 2026
Save $11,743 AUD (37%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $31,518 AUD at MOH London · As of October 29, 2026
View at MOH London

About this 2.51ct natural heart diamond

This 2.51ct natural heart sits in the two to three carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1548181494. Listed at 9 retailers as of October 29, 2026, with prices from $19,775 to $31,518, a $11,743 spread on the same certified stone. MOH London lists it at $31,518. 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

2.51
Carat
E
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.19°
Pavilion angle41.82°
OriginNatural
Grading LabGIA
CertificateGIA 1548181494
Dimensions9.22 × 7.78 × 5.85 mm
L/W Ratio1.19
Girdle conditionVery Thick
Key to symbols
Crystal, Feather
Top View
9.22 mm7.78 mm2.51 ctE / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1548181494
Side View
Table 58.0%Crown 40.19°Girdle: MediumPavilion 41.82°Culet: NoneDepth 63.4%

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: Oct 31
Current: $31,518 AUD|Low: $19,655 AUD|High: $32,732 AUD|Avg: $24,808 AUD|-2.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 31, 2026
Retailer 2$19,775 AUD
Retailer 4$21,553 AUD
Retailer 6$21,574 AUD
Retailer 3$22,208 AUD
Retailer 9$23,566 AUD
Retailer 7$23,636 AUD
Retailer 8$24,005 AUD
Retailer 5$28,438 AUD
MOH London$31,518 AUD

44 data points across 9 retailers

9 retailers$19,775 AUD to $31,518 AUD

A
Cheapest Retailer
-
$19,775 AUD
£10,938 GBP
A
Retailer 2
-
$21,553 AUD
$15,140 USD
View
Retailer 3
-
$21,574 AUD
View
Price last confirmed 7 days ago
A
Retailer 4
-
$22,208 AUD
£12,283 GBP
View
A
Retailer 5
-
$23,566 AUD
$16,554 USD
View
A
Retailer 6
-
$23,636 AUD
$16,603 USD
View
A
Retailer 7
-
$24,005 AUD
$16,862 USD
View
A
Retailer 8
-
$28,438 AUD
$19,976 USD
View
Most Expensive
A
MOH London
8C505F817 · Oct 29
$31,518 AUD
£17,433 GBP
View
8 more retailers have this diamond
Prices start from $19,775 AUDSave up to $11,743 AUD

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
2.51ct Heart
$19,775 AUD