CaratHunter
Plans
Heart|Natural|GIA

1.51ct I SI2 Heart Natural Diamond

EX • I/SI2 • GIA 1543577711

Certificate GIA 1543577711

Diamond specifications and retailer prices

From $3,034 USD
HK$23,700 HKD
As of November 1, 2026
Save $3,645 USD (55%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $7,699 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 1543577711. Listed at 17 retailers as of October 29, 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
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1543577711
Dimensions7.23 × 7.94 × 4.63 mm
L/W Ratio1.10
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Cloud, Feather, Crystal, Cavity, Needle
Top View
7.23 mm7.94 mm1.51 ctI / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1543577711
Side View
Table 63.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 58.3%

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: $4,465 USD|Low: $3,008 USD|High: $7,123 USD|Avg: $4,262 USD|-8.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 7$3,034 USD
Retailer 6$3,225 USD
Retailer 4$3,642 USD
Retailer 2$3,819 USD
Retailer 9$3,912 USD
Retailer 5$4,037 USD
Retailer 3$4,093 USD
Retailer 10$4,140 USD
Retailer 1$4,465 USD
Retailer 8$6,679 USD

40 data points across 10 retailers

17 retailers$3,034 USD to $6,679 USD

A
Cheapest Retailer
-
$3,034 USD
HK$23,700 HKD
A
Retailer 2
-
$3,225 USD
₹307,105 INR
View
A
Retailer 3
-
$3,642 USD
View
Final sale: no returns
A
Retailer 4
-
$3,819 USD
SGD 5,161 SGD
View
A
Retailer 5
-
$3,912 USD
SGD 5,286 SGD
View
A
Retailer 6
-
$4,037 USD
£3,178 GBP
View
B+
Retailer 7
-
$4,067 USD
View
B+
Retailer 8
-
$4,093 USD
View
B+
Retailer 9
-
$4,140 USD
View
B+
Retailer 10
-
$4,321 USD
A$6,648 AUD
View
Retailer 11
-
$4,419 USD
View
Price last confirmed 25 days ago
Retailer 12
-
$4,419 USD
View
Price last confirmed 32 days ago
Retailer 13
-
$4,419 USD
View
Price last confirmed 25 days ago
B+
Retailer 14
-
$4,465 USD
€4,252 EUR
View
Retailer 15
-
$5,099 USD
View
Price last confirmed 34 days ago
B
Retailer 16
-
$6,679 USD
£5,259 GBP
View
Most Expensive
NZ Jewellers
ee8781a8-47d7-4023-85f6-2e41dd61f5b5 · Sep 30
$7,699 USD
View
Price last confirmed 32 days ago
16 more retailers have this diamond
Prices start from $3,034 USDSave up to $3,645 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
$3,034 USD