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Heart|Natural|GIA

1.51ct H SI2 Heart Natural Diamond

EX • H/SI2 • GIA 6552708484

Certificate GIA 6552708484

Diamond specifications and retailer prices

From $3,192 USD
As of November 6, 2026
Save $552 USD (15%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $3,744 USD at Michael Trio · As of November 6, 2026
View at Michael Trio

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 6552708484. Listed at 5 retailers as of November 6, 2026, with prices from $3,192 to $3,744, a $552 spread on the same certified stone. Michael Trio lists it at $3,744. 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
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6552708484
Dimensions6.96 × 8.02 × 4.76 mm
L/W Ratio1.15
Culet sizeNone
Key to symbols
Twinning Wisp, Crystal, Cloud, Feather, Needle, Indented Natural, Natural
Top View
6.96 mm8.02 mm1.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6552708484
Side View
Table 57.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 59.4%

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: Nov 6
Current: $3,744 USD|Low: $2,869 USD|High: $3,918 USD|Avg: $3,452 USD|-1.7%
Michael Trio
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 2$3,192 USD
Retailer 5$3,195 USD
Retailer 4$3,254 USD
Retailer 3$3,414 USD
Michael Trio$3,744 USD

45 data points across 5 retailers

5 retailers$3,192 USD to $3,744 USD

A
Cheapest Retailer
-
$3,192 USD
A
Retailer 2
-
$3,195 USD
View
A
Retailer 3
-
$3,254 USD
View
Final sale: no returns
A
Retailer 4
-
$3,414 USD
View
Most Expensive
A
Michael Trio
2291706921 · Nov 6
$3,744 USD
SGD 5,060 SGD
View
4 more retailers have this diamond
Prices start from $3,192 USDSave up to $552 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
$3,192 USD