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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 $4,152 USD
As of November 6, 2026
Save $4,574 USD (52%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $9,099 USD 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
Color
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: $9,099 USD|Low: $3,791 USD|High: $9,099 USD|Avg: $6,112 USD
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$4,152 USD
Retailer 5$4,550 USD
Retailer 3$4,929 USD
Retailer 2$5,184 USD
Retailer 6$5,334 USD
Retailer 10$5,580 USD
Retailer 11$5,580 USD
Retailer 13$5,687 USD
Retailer 12$5,760 USD
Retailer 7$6,182 USD
Retailer 8$6,702 USD
Retailer 9$8,726 USD
NZ Jewellers$9,099 USD

39 data points across 13 retailers

16 retailers$4,152 USD to $8,726 USD

A
Cheapest Retailer
-
$4,152 USD
A
Retailer 2
-
$4,171 USD
View
B+
Retailer 3
-
$4,920 USD
View
Retailer 4
-
$4,929 USD
View
Price last confirmed 17 days ago
Retailer 5
-
$4,929 USD
View
Price last confirmed 21 days ago
B+
Retailer 6
-
$5,184 USD
View
B+
Retailer 7
-
$5,334 USD
View
B+
Retailer 8
-
$5,580 USD
View
B+
Retailer 9
-
$5,580 USD
View
B+
Retailer 10
-
$5,639 USD
View
Retailer 11
-
$5,687 USD
View
Price last confirmed 16 days ago
B
Retailer 12
-
$5,760 USD
View
B+
Retailer 13
-
$6,182 USD
View
B
Retailer 14
-
$6,702 USD
View
B
Retailer 15
-
$8,726 USD
View
Most Expensive
NZ Jewellers
5f69c31b-1f01-42cc-8698-0ea82b4976e0 · Oct 21
$9,099 USD
View
Price last confirmed 16 days ago
15 more retailers have this diamond
Prices start from $4,152 USDSave up to $4,574 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
$4,152 USD