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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 $3,441 SGD
As of November 4, 2026
Save $950 SGD (22%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $6,008 SGD 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 4, 2026, with a 28% 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
Colour
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

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: Nov 4
Current: $4,391 SGD|Low: $2,608 SGD|High: $6,243 SGD|Avg: $4,137 SGD|-5.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Wholesale Diamonds Direct
November 4, 2026
Retailer 10$2,608 SGD
Retailer 4$3,225 SGD
Retailer 5$3,441 SGD
Retailer 7$3,610 SGD
Retailer 3$3,747 SGD
Retailer 6$3,811 SGD
Retailer 2$4,041 SGD
Retailer 1$4,391 SGD
Retailer 9$4,623 SGD
Retailer 8$5,091 SGD
Wholesale Diamonds Direct$6,008 SGD

22 data points across 11 retailers

7 retailers$3,441 SGD to $4,391 SGD

A
Cheapest Retailer
-
$3,441 SGD
A
Retailer 2
-
$3,610 SGD
View
A
Retailer 3
-
$3,747 SGD
View
A
Retailer 4
-
$3,811 SGD
View
A
Retailer 5
-
$4,041 SGD
View
A
Retailer 6
-
$4,391 SGD
View
Most Expensive
Wholesale Diamonds Direct
419410307 · Oct 14
$6,008 SGD
$4,688 USD
View
Price last confirmed 22 days ago
6 more retailers have this diamond
Prices start from $3,441 SGDSave up to $950 SGD

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
$3,441 SGD