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Heart|Natural|GIA

1.51ct I SI2 Heart Natural Diamond

EX • I/SI2 • GIA 2558582288

Certificate GIA 2558582288

Diamond specifications and retailer prices

From $2,996 USD
As of November 1, 2026
Save $3,576 USD (54%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $7,567 USD at NZ Jewellers · As of September 25, 2026
View at NZ Jewellers

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 2558582288. Listed at 13 retailers as of November 1, 2026, with a 119% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2558582288
Dimensions7.02 × 7.80 × 4.64 mm
L/W Ratio1.11
Girdle conditionFaceted
Top View
7.02 mm7.80 mm1.51 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2558582288
Side View
Table 58.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 59.4%

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: Nov 1
Current: $3,008 USD|Low: $2,957 USD|High: $7,164 USD|Avg: $4,288 USD|-4.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 10$2,996 USD
Retailer 1$3,008 USD
Retailer 8$3,173 USD
Retailer 2$3,222 USD
Retailer 6$3,331 USD
Retailer 9$3,730 USD
Retailer 7$4,076 USD
Retailer 5$4,509 USD
Retailer 4$5,360 USD
Retailer 3$6,219 USD
Retailer 11$6,572 USD

34 data points across 11 retailers

13 retailers$2,996 USD to $6,572 USD

A
Cheapest Retailer
-
$2,996 USD
A
Retailer 2
-
$3,008 USD
HK$23,500 HKD
View
A
Retailer 3
-
$3,173 USD
View
A
Retailer 4
-
$3,222 USD
View
A
Retailer 5
-
$3,331 USD
View
Final sale: no returns
A
Retailer 6
-
$3,730 USD
View
A
Retailer 7
-
$4,076 USD
£3,209 GBP
View
B+
Retailer 8
-
$4,321 USD
A$6,648 AUD
View
B+
Retailer 9
-
$4,509 USD
€4,294 EUR
View
B+
Retailer 10
-
$5,360 USD
View
B+
Retailer 11
-
$6,219 USD
View
B
Retailer 12
-
$6,572 USD
£5,175 GBP
View
Most Expensive
NZ Jewellers
79b6de24-c94c-44b2-a0a4-19c056c56763 · Sep 25
$7,567 USD
View
Price last confirmed 38 days ago
12 more retailers have this diamond
Prices start from $2,996 USDSave up to $3,576 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
$2,996 USD