Heart|Natural|GIA

0.78ct G SI1 Heart Natural Diamond

EX • G/SI1 • GIA 1549275139

Certificate GIA 1549275139

Diamond specifications and retailer prices

From $640 USD
HK$5,000 HKD
As of October 29, 2026
Save $675 USD (51%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $2,816 USD 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 23, 2026, with a 106% 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $1,005 USD|Low: $640 USD|High: $1,665 USD|Avg: $1,027 USD|-4.7%
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 29, 2026
Retailer 14$640 USD
Retailer 16$776 USD
Retailer 5$830 USD
Retailer 11$838 USD
Retailer 9$842 USD
Retailer 13$889 USD
Retailer 6$892 USD
Retailer 10$961 USD
Retailer 1$1,005 USD
Retailer 7$1,023 USD
Retailer 2$1,065 USD
Retailer 3$1,088 USD
Retailer 12$1,243 USD
Retailer 8$1,313 USD
Retailer 15$1,315 USD
Retailer 4$1,551 USD

27 data points across 16 retailers

18 retailers$640 USD to $1,315 USD

A
Cheapest Retailer
-
$640 USD
HK$5,000 HKD
A
Retailer 2
-
$776 USD
View
Final sale: no returns
A
Retailer 3
-
$830 USD
View
A
Retailer 4
-
$838 USD
View
A
Retailer 5
-
$842 USD
€802 EUR
View
A
Retailer 6
-
$889 USD
View
A
Retailer 7
-
$892 USD
SGD 1,205 SGD
View
A
Retailer 8
-
$961 USD
£757 GBP
View
A
Retailer 9
-
$1,005 USD
View
A
Retailer 10
-
$1,023 USD
SGD 1,383 SGD
View
A
Retailer 11
-
$1,065 USD
View
A
Retailer 12
-
$1,088 USD
£857 GBP
View
B+
Retailer 13
-
$1,243 USD
ZAR 20,080 ZAR
View
Price last confirmed 7 days ago
B+
Retailer 14
-
$1,260 USD
A$1,938 AUD
View
B+
Retailer 15
-
$1,313 USD
A$2,020 AUD
View
Price last confirmed 25 days ago
B+
Retailer 16
-
$1,315 USD
View
B+
Retailer 17
-
$1,551 USD
£1,221 GBP
View
Price last confirmed 10 days ago
Most Expensive
B
NZ Jewellers
fe661871-26f7-47b4-9d4a-36a9581c5b83 · Sep 25
$2,816 USD
View
Price last confirmed 33 days ago
17 more retailers have this diamond
Prices start from $640 USDSave up to $675 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
0.78ct Heart
$640 USD