Heart|Natural|GIA

1.51ct H SI2 Heart Natural Diamond

EX • H/SI2 • GIA 3425738172

Certificate GIA 3425738172

Diamond specifications and retailer prices

From $3,887 USD
₹370,145 INR
As of October 31, 2026
Save $6,424 USD (62%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $10,311 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 H 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 3425738172. Listed at 15 retailers as of October 31, 2026, with prices from $3,887 to $10,311, a $6,424 spread on the same certified stone. Adiamor lists it at $10,311. 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
H
Color
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 3425738172
Dimensions6.85 × 7.73 × 4.65 mm
L/W Ratio1.13
Top View
6.85 mm7.73 mm1.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 3425738172
Side View
Table 59.0%CrownGirdle: THK-ETKPavilionCulet: NoneDepth 60.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $5,232 USD|Low: $3,710 USD|High: $8,968 USD|Avg: $5,788 USD|+1.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 3$3,887 USD
Retailer 4$3,891 USD
Retailer 5$4,949 USD
Retailer 1$5,232 USD
Retailer 6$5,362 USD
Retailer 7$5,362 USD
Retailer 2$8,539 USD
Retailer 8$8,968 USD

46 data points across 8 retailers

15 retailers$3,887 USD to $10,311 USD

A
Cheapest Retailer
-
$3,887 USD
₹370,145 INR
A
Retailer 2
-
$3,891 USD
HK$30,400 HKD
View
B+
Retailer 3
-
$4,537 USD
View
B+
Retailer 4
-
$4,676 USD
View
Retailer 5
-
$4,946 USD
SGD 6,684 SGD
View
Price last confirmed 7 days ago
B+
Retailer 6
-
$4,949 USD
View
Final sale: no returns
B+
Retailer 7
-
$5,232 USD
£4,119 GBP
View
B+
Retailer 8
-
$5,362 USD
View
B+
Retailer 9
-
$5,362 USD
View
B+
Retailer 10
-
$5,362 USD
View
B+
Retailer 11
-
$5,515 USD
View
B+
Retailer 12
-
$6,187 USD
View
B
Retailer 13
-
$8,539 USD
£6,724 GBP
View
B
Retailer 14
-
$8,968 USD
View
Most Expensive
B
Adiamor
D-64681383 · Nov 1
$10,311 USD
View
14 more retailers have this diamond
Prices start from $3,887 USDSave up to $6,424 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
$3,887 USD