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Heart|Natural|GIA

1.51ct I SI1 Heart Natural Diamond

ID • I/SI1 • GIA 6552652410

Certificate GIA 6552652410

Diamond specifications and retailer prices

From $5,321 SGD
As of November 6, 2026
Save $5,862 SGD (52%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $11,661 SGD at NZ Jewellers · As of October 21, 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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6552652410. Listed at 16 retailers as of November 4, 2026, with a 110% 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
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishVery Good
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6552652410
Dimensions7.87 × 6.97 × 4.55 mm
L/W Ratio1.13
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Crystal, Needle
Top View
7.87 mm6.97 mm1.51 ctI / SI1
OriginNatural
CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 6552652410
Side View
Table 61.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 57.9%

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 6
Current: $11,661 SGD|Low: $4,859 SGD|High: $11,661 SGD|Avg: $7,824 SGD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 4$5,321 SGD
Retailer 5$5,831 SGD
Retailer 3$6,317 SGD
Retailer 2$6,644 SGD
Retailer 6$6,836 SGD
Retailer 10$7,151 SGD
Retailer 11$7,151 SGD
Retailer 13$7,288 SGD
Retailer 12$7,382 SGD
Retailer 7$7,923 SGD
Retailer 8$8,589 SGD
Retailer 9$11,183 SGD
NZ Jewellers$11,661 SGD

38 data points across 13 retailers

16 retailers$5,321 SGD to $11,183 SGD

A
Cheapest Retailer
-
$5,321 SGD
A
Retailer 2
-
$5,346 SGD
View
B+
Retailer 3
-
$6,305 SGD
View
Retailer 4
-
$6,317 SGD
View
Price last confirmed 18 days ago
Retailer 5
-
$6,317 SGD
View
Price last confirmed 22 days ago
B+
Retailer 6
-
$6,644 SGD
View
B+
Retailer 7
-
$6,836 SGD
View
B+
Retailer 8
-
$7,151 SGD
View
B+
Retailer 9
-
$7,151 SGD
View
B+
Retailer 10
-
$7,227 SGD
View
Retailer 11
-
$7,288 SGD
View
Price last confirmed 17 days ago
B
Retailer 12
-
$7,382 SGD
View
B+
Retailer 13
-
$7,923 SGD
View
B
Retailer 14
-
$8,589 SGD
View
B
Retailer 15
-
$11,183 SGD
View
Most Expensive
NZ Jewellers
5f69c31b-1f01-42cc-8698-0ea82b4976e0 · Oct 21
$11,661 SGD
$9,099 USD
View
Price last confirmed 16 days ago
15 more retailers have this diamond
Prices start from $5,321 SGDSave up to $5,862 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
$5,321 SGD