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Heart|Natural|GIA

1.51ct H SI1 Heart Natural Diamond

ID • H/SI1 • GIA 7558902646

Certificate GIA 7558902646

Diamond specifications and retailer prices

From $4,080 USD
As of November 1, 2026
Save $5,363 USD (57%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $9,443 USD at NZ Jewellers · As of October 30, 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 H 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 7558902646. Listed at 17 retailers as of October 30, 2026, with prices from $4,080 to $9,443, a $5,363 spread on the same certified stone. NZ Jewellers lists it at $9,443. 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
H
Color
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7558902646
Dimensions8.10 × 6.90 × 4.73 mm
L/W Ratio1.17
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Cloud, Feather, Crystal, Needle
Top View
8.10 mm6.90 mm1.51 ctH / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7558902646
Side View
Table 65.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 58.4%

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 1
Current: $9,443 USD|Low: $4,080 USD|High: $9,443 USD|Avg: $5,856 USD|+1.0%
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 2, 2026
Retailer 7$4,080 USD
Retailer 8$4,287 USD
Retailer 9$5,040 USD
Retailer 15$5,115 USD
Retailer 16$5,115 USD
Retailer 17$5,115 USD
Retailer 11$5,118 USD
Retailer 2$5,320 USD
Retailer 18$5,375 USD
Retailer 4$5,730 USD
Retailer 5$5,730 USD
Retailer 10$5,794 USD
Retailer 14$5,902 USD
Retailer 6$5,920 USD
Retailer 19$6,229 USD
Retailer 12$6,387 USD
Retailer 13$6,940 USD
Retailer 3$9,040 USD
NZ Jewellers$9,443 USD

29 data points across 19 retailers

17 retailers$4,080 USD to $9,443 USD

A
Cheapest Retailer
-
$4,080 USD
A
Retailer 2
-
$4,287 USD
View
B+
Retailer 3
-
$5,040 USD
View
B+
Retailer 4
-
$5,115 USD
View
B+
Retailer 5
-
$5,115 USD
View
B+
Retailer 6
-
$5,320 USD
£4,189 GBP
View
B+
Retailer 7
-
$5,375 USD
View
B+
Retailer 8
-
$5,606 USD
View
B+
Retailer 9
-
$5,730 USD
View
B+
Retailer 10
-
$5,730 USD
View
B+
Retailer 11
-
$5,794 USD
View
B
Retailer 12
-
$5,902 USD
View
B
Retailer 13
-
$5,920 USD
View
B+
Retailer 14
-
$6,387 USD
€6,083 EUR
View
B
Retailer 15
-
$6,940 USD
ZAR 112,114 ZAR
View
B
Retailer 16
-
$9,040 USD
£7,118 GBP
View
Most Expensive
B
NZ Jewellers
e47d9d5f-ffb1-457d-896a-4ff81f37f967 · Oct 30
$9,443 USD
View
16 more retailers have this diamond
Prices start from $4,080 USDSave up to $5,363 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
$4,080 USD