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Heart|Natural|GIA

1.51ct I SI2 Heart Natural Diamond

EX • I/SI2 • GIA 5546346351

Certificate GIA 5546346351

Diamond specifications and retailer prices

From $2,419 USD
HK$18,900 HKD
As of November 1, 2026
Save $2,905 USD (55%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $6,325 USD at NZ Jewellers · As of September 30, 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 5546346351. Listed at 15 retailers as of November 1, 2026, with a 120% 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
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 5546346351
Dimensions7.01 × 7.97 × 4.70 mm
L/W Ratio1.14
Top View
7.01 mm7.97 mm1.51 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 5546346351
Side View
Table 63.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 58.9%

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: $3,327 USD|Low: $2,406 USD|High: $6,144 USD|Avg: $3,492 USD|-9.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 4$2,419 USD
Retailer 2$2,606 USD
Retailer 5$2,775 USD
Retailer 1$3,327 USD
Retailer 6$3,327 USD
Retailer 8$3,372 USD
Retailer 9$3,396 USD
Retailer 7$3,420 USD
Retailer 3$5,324 USD

46 data points across 9 retailers

15 retailers$2,419 USD to $5,324 USD

A
Cheapest Retailer
-
$2,419 USD
HK$18,900 HKD
A
Retailer 2
-
$2,606 USD
₹248,229 INR
View
A
Retailer 3
-
$2,775 USD
SGD 3,750 SGD
View
A
Retailer 4
-
$3,327 USD
£2,620 GBP
View
A
Retailer 5
-
$3,327 USD
View
A
Retailer 6
-
$3,372 USD
SGD 4,557 SGD
View
A
Retailer 7
-
$3,396 USD
View
A
Retailer 8
-
$3,420 USD
View
A
Retailer 9
-
$3,587 USD
A$5,518 AUD
View
Retailer 10
-
$3,631 USD
View
Price last confirmed 25 days ago
Retailer 11
-
$3,631 USD
View
Price last confirmed 25 days ago
Retailer 12
-
$3,770 USD
View
Price last confirmed 32 days ago
Retailer 13
-
$4,189 USD
View
Price last confirmed 34 days ago
B+
Retailer 14
-
$5,324 USD
£4,192 GBP
View
Most Expensive
NZ Jewellers
d05267e3-2d78-42de-92fb-73038f7076f7 · Sep 30
$6,325 USD
View
Price last confirmed 32 days ago
14 more retailers have this diamond
Prices start from $2,419 USDSave up to $2,905 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
$2,419 USD