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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 $3,592 USD
₹342,125 INR
As of October 31, 2026
Save $5,929 USD (62%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $9,521 USD 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 $3,592 to $9,521, a $5,929 spread on the same certified stone. Adiamor lists it at $9,521. 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: $4,926 USD|Low: $3,426 USD|High: $8,541 USD|Avg: $4,813 USD|+1.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 4$3,592 USD
Retailer 5$3,597 USD
Retailer 6$3,919 USD
Retailer 3$4,186 USD
Retailer 7$4,572 USD
Retailer 1$4,926 USD
Retailer 8$4,954 USD
Retailer 2$7,891 USD

41 data points across 8 retailers

15 retailers$3,592 USD to $9,521 USD

A
Cheapest Retailer
-
$3,592 USD
₹342,125 INR
A
Retailer 2
-
$3,597 USD
HK$28,100 HKD
View
A
Retailer 3
-
$3,919 USD
A$6,029 AUD
View
A
Retailer 4
-
$4,186 USD
View
B+
Retailer 5
-
$4,230 USD
View
B+
Retailer 6
-
$4,572 USD
View
Final sale: no returns
B+
Retailer 7
-
$4,926 USD
£3,879 GBP
View
B+
Retailer 8
-
$4,954 USD
View
B+
Retailer 9
-
$4,954 USD
View
B+
Retailer 10
-
$4,954 USD
View
B+
Retailer 11
-
$5,105 USD
View
B
Retailer 12
-
$5,716 USD
View
B
Retailer 13
-
$7,891 USD
£6,213 GBP
View
B
Retailer 14
-
$8,630 USD
View
Most Expensive
B
Adiamor
D-64680553 · Nov 1
$9,521 USD
View
14 more retailers have this diamond
Prices start from $3,592 USDSave up to $5,929 USD

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
$3,592 USD