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Heart|Natural|GIA

1.51ct I SI2 Heart Natural Diamond

EX • I/SI2 • GIA 3555615885

Certificate GIA 3555615885

Diamond specifications and retailer prices

From $2,685 USD
As of November 1, 2026
Save $468 USD (15%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $4,688 USD at Wholesale Diamonds Direct · As of October 14, 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 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 3555615885. Listed at 7 retailers as of November 1, 2026, with a relatively tight 17% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
SymmetryExcellent
FluorescenceNone
Crown angle34.91°
Pavilion angle40.12°
OriginNatural
Grading LabGIA
CertificateGIA 3555615885
Dimensions6.92 × 7.90 × 4.72 mm
L/W Ratio1.14
Culet sizeNone
Top View
6.92 mm7.90 mm1.51 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3555615885
Side View
Table 59.0%Crown 34.91°Girdle: THN-THKPavilion 40.12°Culet: NoneDepth 59.8%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: $2,949 USD|Low: $2,035 USD|High: $4,871 USD|Avg: $3,234 USD|-3.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Wholesale Diamonds Direct
November 2, 2026
Retailer 10$2,035 USD
Retailer 3$2,516 USD
Retailer 4$2,685 USD
Retailer 7$2,817 USD
Retailer 1$2,949 USD
Retailer 5$2,975 USD
Retailer 2$3,153 USD
Retailer 6$3,496 USD
Retailer 9$3,608 USD
Retailer 8$3,973 USD
Wholesale Diamonds Direct$4,688 USD

20 data points across 11 retailers

7 retailers$2,685 USD to $3,153 USD

Retailer 1
-
$2,516 USD
SGD 3,400 SGD
Price last confirmed 12 days ago
A
Retailer 2
-
$2,685 USD
View
A
Retailer 3
-
$2,817 USD
View
A
Retailer 4
-
$2,949 USD
£2,322 GBP
View
A
Retailer 5
-
$2,975 USD
SGD 4,020 SGD
View
A
Retailer 6
-
$3,153 USD
View
Most Expensive
Wholesale Diamonds Direct
419410307 · Oct 14
$4,688 USD
View
Price last confirmed 18 days ago
6 more retailers have this diamond
Prices start from $2,685 USDSave up to $468 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
$2,685 USD