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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 $7,490 NZD
As of November 6, 2026
Save $8,251 NZD (52%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $16,414 NZD 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: $16,414 NZD|Low: $6,839 NZD|High: $16,414 NZD|Avg: $11,013 NZD
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$7,490 NZD
Retailer 5$8,208 NZD
Retailer 3$8,891 NZD
Retailer 2$9,351 NZD
Retailer 6$9,622 NZD
Retailer 10$10,066 NZD
Retailer 11$10,066 NZD
Retailer 13$10,259 NZD
Retailer 12$10,390 NZD
Retailer 7$11,152 NZD
Retailer 8$12,090 NZD
Retailer 9$15,741 NZD
NZ Jewellers$16,414 NZD

38 data points across 13 retailers

16 retailers$7,490 NZD to $15,741 NZD

A
Cheapest Retailer
-
$7,490 NZD
A
Retailer 2
-
$7,524 NZD
View
B+
Retailer 3
-
$8,875 NZD
View
Retailer 4
-
$8,891 NZD
View
Price last confirmed 18 days ago
Retailer 5
-
$8,891 NZD
View
Price last confirmed 22 days ago
B+
Retailer 6
-
$9,351 NZD
View
B+
Retailer 7
-
$9,622 NZD
View
B+
Retailer 8
-
$10,066 NZD
View
B+
Retailer 9
-
$10,066 NZD
View
B+
Retailer 10
-
$10,172 NZD
View
Retailer 11
-
$10,259 NZD
View
Price last confirmed 17 days ago
B
Retailer 12
-
$10,390 NZD
View
B+
Retailer 13
-
$11,152 NZD
View
B
Retailer 14
-
$12,090 NZD
View
B
Retailer 15
-
$15,741 NZD
View
Most Expensive
NZ Jewellers
5f69c31b-1f01-42cc-8698-0ea82b4976e0 · Oct 21
$16,414 NZD
$9,099 USD
View
Price last confirmed 16 days ago
15 more retailers have this diamond
Prices start from $7,490 NZDSave up to $8,251 NZD

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
$7,490 NZD