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Heart|Natural|GIA

1.51ct I SI2 Heart Natural Diamond

EX • I/SI2 • GIA 2427009307

Certificate GIA 2427009307

Diamond specifications and retailer prices

From $5,020 CAD
₹342,125 INR
As of October 31, 2026
Save $8,285 CAD (62%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $13,305 CAD at Adiamor · As of November 1, 2026
View at Adiamor

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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2427009307. Listed at 15 retailers as of October 31, 2026, with prices from $5,020 to $13,305, a $8,285 spread on the same certified stone. Adiamor lists it at $13,305. 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

1.51
Carat
I
Color
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2427009307
Dimensions6.57 × 8.10 × 4.46 mm
L/W Ratio1.23
Top View
6.57 mm8.10 mm1.51 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2427009307
Side View
Table 62.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 55.1%

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: $6,884 CAD|Low: $4,787 CAD|High: $11,935 CAD|Avg: $6,725 CAD|+1.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 4$5,020 CAD
Retailer 5$5,026 CAD
Retailer 6$5,476 CAD
Retailer 3$5,850 CAD
Retailer 7$6,389 CAD
Retailer 1$6,884 CAD
Retailer 8$6,923 CAD
Retailer 2$11,026 CAD

41 data points across 8 retailers

15 retailers$5,020 CAD to $13,305 CAD

A
Cheapest Retailer
-
$5,020 CAD
₹342,125 INR
A
Retailer 2
-
$5,026 CAD
HK$28,100 HKD
View
A
Retailer 3
-
$5,476 CAD
A$6,029 AUD
View
A
Retailer 4
-
$5,850 CAD
$4,186 USD
View
B+
Retailer 5
-
$5,911 CAD
$4,230 USD
View
B+
Retailer 6
-
$6,389 CAD
$4,572 USD
View
Final sale: no returns
B+
Retailer 7
-
$6,884 CAD
£3,879 GBP
View
B+
Retailer 8
-
$6,923 CAD
$4,954 USD
View
B+
Retailer 9
-
$6,923 CAD
$4,954 USD
View
B+
Retailer 10
-
$6,923 CAD
$4,954 USD
View
B+
Retailer 11
-
$7,134 CAD
$5,105 USD
View
B
Retailer 12
-
$7,988 CAD
$5,716 USD
View
B
Retailer 13
-
$11,026 CAD
£6,213 GBP
View
B
Retailer 14
-
$12,060 CAD
$8,630 USD
View
Most Expensive
B
Adiamor
D-64680553 · Nov 1
$13,305 CAD
$9,521 USD
View
14 more retailers have this diamond
Prices start from $5,020 CADSave up to $8,285 CAD

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
$5,020 CAD