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Heart|Natural|GIA

1.51ct G SI1 Heart Natural Diamond

EX • G/SI1 • GIA 7548658345

Certificate GIA 7548658345

Diamond specifications and retailer prices

From $8,173 NZD
As of November 6, 2026
Save $8,789 NZD (52%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $20,121 NZD at NZ Jewellers · As of September 25, 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 G 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 7548658345. Listed at 18 retailers as of November 6, 2026, with a 108% 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
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Pavilion angle40.1°
OriginNatural
Grading LabGIA
CertificateGIA 7548658345
Dimensions6.85 × 7.92 × 4.61 mm
L/W Ratio1.16
Girdle conditionFaceted
Top View
6.85 mm7.92 mm1.51 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 7548658345
Side View
Table 59.0%CrownGirdle: STK-VTKPavilion 40.1°Culet: NoneDepth 58.2%

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: $9,175 NZD|Low: $8,058 NZD|High: $18,167 NZD|Avg: $10,871 NZD|-6.8%
Retailer 1
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
November 6, 2026
Retailer 5$8,173 NZD
Retailer 7$8,213 NZD
Retailer 14$8,713 NZD
Retailer 6$8,955 NZD
Retailer 2$9,092 NZD
Retailer 13$9,146 NZD
Retailer 1$9,175 NZD
Retailer 11$9,254 NZD
Retailer 3$9,651 NZD
Retailer 4$10,268 NZD
Retailer 9$10,282 NZD
Retailer 16$10,980 NZD
Retailer 8$11,411 NZD
Retailer 10$13,066 NZD
Retailer 12$15,734 NZD
Retailer 15$16,962 NZD

27 data points across 16 retailers

18 retailers$8,173 NZD to $16,962 NZD

A
Cheapest Retailer
-
$8,173 NZD
Retailer 2
-
$8,213 NZD
View
Price last confirmed 8 days ago
A
Retailer 3
-
$8,713 NZD
View
A
Retailer 4
-
$8,955 NZD
View
Final sale: no returns
A
Retailer 5
-
$9,092 NZD
View
A
Retailer 6
-
$9,146 NZD
View
A
Retailer 7
-
$9,175 NZD
View
A
Retailer 8
-
$9,254 NZD
View
A
Retailer 9
-
$9,651 NZD
View
B+
Retailer 10
-
$10,268 NZD
View
B+
Retailer 11
-
$10,282 NZD
View
B+
Retailer 12
-
$10,980 NZD
View
Retailer 13
-
$11,411 NZD
View
Price last confirmed 28 days ago
B+
Retailer 14
-
$11,805 NZD
View
B+
Retailer 15
-
$13,066 NZD
View
B
Retailer 16
-
$15,734 NZD
View
B
Retailer 17
-
$16,962 NZD
View
Most Expensive
NZ Jewellers
dfd524f4-d138-4721-ad10-4a247a2a057c · Sep 25
$20,121 NZD
$11,154 USD
View
Price last confirmed 42 days ago
17 more retailers have this diamond
Prices start from $8,173 NZDSave up to $8,789 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
$8,173 NZD