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Heart|Natural|GIA

0.78ct G SI1 Heart Natural Diamond

EX • G/SI1 • GIA 1549275139

Certificate GIA 1549275139

Diamond specifications and retailer prices

From $1,136 NZD
HK$5,000 HKD
As of October 30, 2026
Save $1,100 NZD (49%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $4,996 NZD at NZ Jewellers · As of September 25, 2026
View at NZ Jewellers

About this 0.78ct natural heart diamond

This 0.78ct natural heart sits in the just-under-one-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 1549275139. Listed at 18 retailers as of October 30, 2026, with a 97% 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

0.78
Carat
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 1549275139
Dimensions5.51 × 6.50 × 3.84 mm
L/W Ratio1.18
Girdle conditionFaceted
Top View
5.51 mm6.50 mm0.78 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1549275139
Side View
Table 59.0%CrownGirdle: THN-THKPavilion 41.6°Culet: NoneDepth 59.1%

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: Oct 30
Current: $2,231 NZD|Low: $1,136 NZD|High: $2,871 NZD|Avg: $1,811 NZD|-3.8%
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
October 31, 2026
Retailer 15$1,136 NZD
Retailer 2$1,377 NZD
Retailer 5$1,473 NZD
Retailer 13$1,487 NZD
Retailer 11$1,493 NZD
Retailer 14$1,577 NZD
Retailer 6$1,582 NZD
Retailer 12$1,783 NZD
Retailer 10$1,795 NZD
Retailer 7$1,816 NZD
Retailer 9$1,823 NZD
Retailer 3$1,890 NZD
Retailer 1$2,231 NZD
Retailer 8$2,329 NZD
Retailer 16$2,334 NZD
Retailer 4$2,751 NZD

28 data points across 16 retailers

18 retailers$1,136 NZD to $2,235 NZD

A
Cheapest Retailer
-
$1,136 NZD
HK$5,000 HKD
A
Retailer 2
-
$1,377 NZD
$776 USD
View
Final sale: no returns
A
Retailer 3
-
$1,473 NZD
$830 USD
View
A
Retailer 4
-
$1,487 NZD
$838 USD
View
Retailer 5
-
$1,493 NZD
€801 EUR
View
Price last confirmed 3 days ago
A
Retailer 6
-
$1,577 NZD
$889 USD
View
Retailer 7
-
$1,582 NZD
SGD 1,205 SGD
View
Price last confirmed 10 days ago
A
Retailer 8
-
$1,783 NZD
$1,005 USD
View
A
Retailer 9
-
$1,795 NZD
£797 GBP
View
A
Retailer 10
-
$1,816 NZD
SGD 1,383 SGD
View
A
Retailer 11
-
$1,823 NZD
£809 GBP
View
A
Retailer 12
-
$1,890 NZD
$1,065 USD
View
B+
Retailer 13
-
$2,231 NZD
ZAR 20,310 ZAR
View
B+
Retailer 14
-
$2,235 NZD
A$1,938 AUD
View
Retailer 15
-
$2,329 NZD
A$2,020 AUD
View
Price last confirmed 29 days ago
Retailer 16
-
$2,334 NZD
$1,315 USD
View
Price last confirmed 9 days ago
Retailer 17
-
$2,751 NZD
£1,221 GBP
View
Price last confirmed 14 days ago
Most Expensive
NZ Jewellers
fe661871-26f7-47b4-9d4a-36a9581c5b83 · Sep 25
$4,996 NZD
$2,816 USD
View
Price last confirmed 37 days ago
17 more retailers have this diamond
Prices start from $1,136 NZDSave up to $1,100 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
0.78ct Heart
$1,136 NZD