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Heart|Natural|GIA

1.51ct J SI2 Heart Natural Diamond

EX • J/SI2 • GIA 6551196917

Certificate GIA 6551196917

Diamond specifications and retailer prices

From $2,321 USD
SGD 3,137 SGD
As of October 31, 2026
Save $1,922 USD (45%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $4,243 USD at Wholesale Diamonds Direct · As of October 27, 2026
View at Wholesale Diamonds Direct

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 6551196917. Listed at 11 retailers as of October 27, 2026, with prices from $2,321 to $4,243, a $1,922 spread on the same certified stone. Wholesale Diamonds Direct lists it at $4,243. 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
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.8°
Pavilion angle38.08°
OriginNatural
Grading LabGIA
CertificateGIA 6551196917
Dimensions6.78 × 7.90 × 4.72 mm
L/W Ratio1.17
Culet sizeNone
Top View
6.78 mm7.90 mm1.51 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551196917
Side View
Table 59.0%Crown 43.8°Girdle: THN-STKPavilion 38.08°Culet: NoneDepth 59.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $3,162 USD|Low: $2,321 USD|High: $4,575 USD|Avg: $3,003 USD|-10.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Wholesale Diamonds Direct
November 1, 2026
Retailer 6$2,321 USD
Retailer 9$2,451 USD
Retailer 4$2,478 USD
Retailer 3$2,521 USD
Retailer 2$2,723 USD
Retailer 8$2,745 USD
Retailer 7$2,960 USD
Retailer 5$2,980 USD
Retailer 1$3,162 USD
Wholesale Diamonds Direct$4,243 USD

35 data points across 10 retailers

11 retailers$2,321 USD to $4,243 USD

A
Cheapest Retailer
-
$2,321 USD
SGD 3,137 SGD
A
Retailer 2
-
$2,451 USD
View
A
Retailer 3
-
$2,478 USD
View
A
Retailer 4
-
$2,521 USD
View
A
Retailer 5
-
$2,723 USD
£2,144 GBP
View
A
Retailer 6
-
$2,745 USD
SGD 3,710 SGD
View
A
Retailer 7
-
$2,960 USD
View
A
Retailer 8
-
$2,969 USD
View
A
Retailer 9
-
$2,980 USD
View
A
Retailer 10
-
$3,162 USD
View
Most Expensive
B+
Wholesale Diamonds Direct
387037273 · Oct 27
$4,243 USD
View
10 more retailers have this diamond
Prices start from $2,321 USDSave up to $1,922 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
$2,321 USD