Heart|Natural|GIA

1.51ct J SI2 Heart Natural Diamond

EX • J/SI2 • GIA 2235518191

Certificate GIA 2235518191

Diamond specifications and retailer prices

From $3,171 USD
As of November 1, 2026
Save $3,597 USD (53%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $6,873 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 J 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 2235518191. Listed at 17 retailers as of October 29, 2026, with a 113% 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
J
Color
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishGood
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2235518191
Dimensions7.29 × 7.67 × 4.09 mm
L/W Ratio1.05
Culet sizeNone
Top View
7.29 mm7.67 mm1.51 ctJ / SI2
OriginNatural
CutExcellent
PolishGood
SymmetryGood
FluorescenceNone
CertificateGIA 2235518191
Side View
Table 58.0%CrownGirdle: VTK-ETKPavilionCulet: NoneDepth 53.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $4,118 USD|Low: $2,591 USD|High: $6,812 USD|Avg: $3,906 USD|+3.7%
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 11$2,591 USD
Retailer 2$3,120 USD
Retailer 8$3,171 USD
Retailer 7$3,238 USD
Retailer 6$3,366 USD
Retailer 3$3,574 USD
Retailer 9$3,714 USD
Retailer 1$4,118 USD
Retailer 4$4,556 USD
Retailer 10$4,556 USD
Retailer 5$6,768 USD

42 data points across 11 retailers

17 retailers$3,171 USD to $6,768 USD

Retailer 1
-
$3,032 USD
Price last confirmed 25 days ago
B+
Retailer 2
-
$3,171 USD
View
B+
Retailer 3
-
$3,238 USD
View
B+
Retailer 4
-
$3,366 USD
View
Final sale: no returns
Retailer 5
-
$3,574 USD
View
Price last confirmed 25 days ago
Retailer 6
-
$3,574 USD
View
Price last confirmed 25 days ago
Retailer 7
-
$3,579 USD
View
Price last confirmed 25 days ago
Retailer 8
-
$3,711 USD
View
Price last confirmed 32 days ago
B+
Retailer 9
-
$3,714 USD
View
B
Retailer 10
-
$4,118 USD
£3,242 GBP
View
Retailer 11
-
$4,124 USD
View
Price last confirmed 56 days ago
Retailer 12
-
$4,124 USD
View
Price last confirmed 34 days ago
B
Retailer 13
-
$4,556 USD
€4,339 EUR
View
Retailer 14
-
$4,556 USD
View
Price last confirmed 10 days ago
Retailer 15
-
$5,701 USD
View
Price last confirmed 25 days ago
C
Retailer 16
-
$6,768 USD
£5,329 GBP
View
Most Expensive
NZ Jewellers
7a9a62d6-a97d-4169-b6cc-b6d427851887 · Sep 30
$6,873 USD
View
Price last confirmed 32 days ago
16 more retailers have this diamond
Prices start from $3,171 USDSave up to $3,597 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.

B+
1.51ct Heart
$3,171 USD