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Heart|Natural|GIA

1.51ct G SI1 Heart Natural Diamond

EX • G/SI1 • GIA 7548658345

Certificate GIA 7548658345

Diamond specifications and retailer prices

From $4,531 USD
HK$35,400 HKD
As of November 2, 2026
Save $4,215 USD (48%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $11,154 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7548658345. Listed at 18 retailers as of November 2, 2026, with a 93% 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
G
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Pavilion angle40.1°
OriginNatural
Grading LabGIA
CertificateGIA 7548658345
Dimensions6.85 × 7.92 × 4.61 mm
L/W Ratio1.16
Girdle conditionFaceted
Top View
6.85 mm7.92 mm1.51 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 7548658345
Side View
Table 59.0%CrownGirdle: STK-VTKPavilion 40.1°Culet: NoneDepth 58.2%

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 2
Current: $5,102 USD|Low: $4,467 USD|High: $10,071 USD|Avg: $5,954 USD|-6.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 2, 2026
Retailer 12$4,531 USD
Retailer 7$4,553 USD
Retailer 15$4,770 USD
Retailer 13$4,964 USD
Retailer 6$5,100 USD
Retailer 1$5,102 USD
Retailer 4$5,132 USD
Retailer 3$5,192 USD
Retailer 10$5,350 USD
Retailer 11$5,692 USD
Retailer 14$5,791 USD
Retailer 16$6,009 USD
Retailer 8$6,327 USD
Retailer 2$7,198 USD
Retailer 9$8,746 USD
Retailer 5$9,515 USD

26 data points across 16 retailers

18 retailers$4,531 USD to $8,746 USD

A
Cheapest Retailer
-
$4,531 USD
HK$35,400 HKD
A
Retailer 2
-
$4,553 USD
View
A
Retailer 3
-
$4,770 USD
View
A
Retailer 4
-
$4,964 USD
View
Final sale: no returns
A
Retailer 5
-
$5,100 USD
View
A
Retailer 6
-
$5,102 USD
€4,859 EUR
View
A
Retailer 7
-
$5,132 USD
View
A
Retailer 8
-
$5,192 USD
View
A
Retailer 9
-
$5,350 USD
View
B+
Retailer 10
-
$5,692 USD
View
B+
Retailer 11
-
$5,791 USD
£4,560 GBP
View
B+
Retailer 12
-
$6,009 USD
View
Retailer 13
-
$6,327 USD
A$9,733 AUD
View
Price last confirmed 22 days ago
B+
Retailer 14
-
$6,544 USD
A$10,068 AUD
View
B+
Retailer 15
-
$7,198 USD
ZAR 116,289 ZAR
View
B
Retailer 16
-
$8,746 USD
£6,887 GBP
View
Retailer 17
-
$9,515 USD
View
Price last confirmed 10 days ago
Most Expensive
NZ Jewellers
dfd524f4-d138-4721-ad10-4a247a2a057c · Sep 25
$11,154 USD
View
Price last confirmed 38 days ago
17 more retailers have this diamond
Prices start from $4,531 USDSave up to $4,215 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
$4,531 USD