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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 €571 EUR
HK$5,000 HKD
As of October 30, 2026
Save €553 EUR (49%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: €2,511 EUR 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

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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 30
Current: €1,121 EUR|Low: €571 EUR|High: €1,443 EUR|Avg: €910 EUR|-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€571 EUR
Retailer 2€692 EUR
Retailer 5€740 EUR
Retailer 13€747 EUR
Retailer 11€750 EUR
Retailer 14€793 EUR
Retailer 6€795 EUR
Retailer 12€896 EUR
Retailer 10€902 EUR
Retailer 7€912 EUR
Retailer 9€916 EUR
Retailer 3€950 EUR
Retailer 1€1,121 EUR
Retailer 8€1,170 EUR
Retailer 16€1,173 EUR
Retailer 4€1,383 EUR

28 data points across 16 retailers

18 retailers€571 EUR to €1,123 EUR

A
Cheapest Retailer
-
€571 EUR
HK$5,000 HKD
A
Retailer 2
-
€692 EUR
$776 USD
View
Final sale: no returns
A
Retailer 3
-
€740 EUR
$830 USD
View
A
Retailer 4
-
€747 EUR
$838 USD
View
Retailer 5
-
€750 EUR
View
Price last confirmed 3 days ago
A
Retailer 6
-
€793 EUR
$889 USD
View
Retailer 7
-
€795 EUR
SGD 1,205 SGD
View
Price last confirmed 10 days ago
A
Retailer 8
-
€896 EUR
$1,005 USD
View
A
Retailer 9
-
€902 EUR
£797 GBP
View
A
Retailer 10
-
€912 EUR
SGD 1,383 SGD
View
A
Retailer 11
-
€916 EUR
£809 GBP
View
A
Retailer 12
-
€950 EUR
$1,065 USD
View
B+
Retailer 13
-
€1,121 EUR
ZAR 20,310 ZAR
View
B+
Retailer 14
-
€1,123 EUR
A$1,938 AUD
View
Retailer 15
-
€1,170 EUR
A$2,020 AUD
View
Price last confirmed 29 days ago
Retailer 16
-
€1,173 EUR
$1,315 USD
View
Price last confirmed 9 days ago
Retailer 17
-
€1,383 EUR
£1,221 GBP
View
Price last confirmed 14 days ago
Most Expensive
NZ Jewellers
fe661871-26f7-47b4-9d4a-36a9581c5b83 · Sep 25
€2,511 EUR
$2,816 USD
View
Price last confirmed 38 days ago
17 more retailers have this diamond
Prices start from €571 EURSave up to €553 EUR

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
€571 EUR