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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 HK$5,021 HKD
As of October 30, 2026
Save HK$4,862 HKD (49%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: HK$22,093 HKD 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: HK$9,864 HKD|Low: HK$5,021 HKD|High: HK$12,694 HKD|Avg: HK$8,007 HKD|-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 15HK$5,021 HKD
Retailer 2HK$6,088 HKD
Retailer 5HK$6,512 HKD
Retailer 13HK$6,575 HKD
Retailer 11HK$6,601 HKD
Retailer 14HK$6,975 HKD
Retailer 6HK$6,996 HKD
Retailer 12HK$7,885 HKD
Retailer 10HK$7,937 HKD
Retailer 7HK$8,029 HKD
Retailer 9HK$8,061 HKD
Retailer 3HK$8,356 HKD
Retailer 1HK$9,864 HKD
Retailer 8HK$10,300 HKD
Retailer 16HK$10,320 HKD
Retailer 4HK$12,166 HKD

28 data points across 16 retailers

18 retailersHK$5,021 HKD to HK$9,883 HKD

A
Cheapest Retailer
-
HK$5,021 HKD
A
Retailer 2
-
HK$6,088 HKD
$776 USD
View
Final sale: no returns
A
Retailer 3
-
HK$6,512 HKD
$830 USD
View
A
Retailer 4
-
HK$6,575 HKD
$838 USD
View
Retailer 5
-
HK$6,601 HKD
€801 EUR
View
Price last confirmed 3 days ago
A
Retailer 6
-
HK$6,975 HKD
$889 USD
View
Retailer 7
-
HK$6,996 HKD
SGD 1,205 SGD
View
Price last confirmed 10 days ago
A
Retailer 8
-
HK$7,885 HKD
$1,005 USD
View
A
Retailer 9
-
HK$7,937 HKD
£797 GBP
View
A
Retailer 10
-
HK$8,029 HKD
SGD 1,383 SGD
View
A
Retailer 11
-
HK$8,061 HKD
£809 GBP
View
A
Retailer 12
-
HK$8,356 HKD
$1,065 USD
View
B+
Retailer 13
-
HK$9,864 HKD
ZAR 20,310 ZAR
View
B+
Retailer 14
-
HK$9,883 HKD
A$1,938 AUD
View
Retailer 15
-
HK$10,300 HKD
A$2,020 AUD
View
Price last confirmed 29 days ago
Retailer 16
-
HK$10,320 HKD
$1,315 USD
View
Price last confirmed 9 days ago
Retailer 17
-
HK$12,166 HKD
£1,221 GBP
View
Price last confirmed 14 days ago
Most Expensive
NZ Jewellers
fe661871-26f7-47b4-9d4a-36a9581c5b83 · Sep 25
HK$22,093 HKD
$2,816 USD
View
Price last confirmed 37 days ago
17 more retailers have this diamond
Prices start from HK$5,021 HKDSave up to HK$4,862 HKD

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
HK$5,021 HKD