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Heart|Lab Grown|IGI

0.78ct D IF Heart Lab Grown Diamond

EX • D/IF • IGI LG708585978

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG708585978

Diamond specifications and retailer prices

From $1,983 AUD
As of November 4, 2026
Save $1,916 AUD (49%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $9,728 AUD at Zales · As of November 4, 2026
View at Zales

About this 0.78ct lab-grown heart diamond

This 0.78ct lab-grown heart sits in the just-under-one-carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG708585978 or 708585978. Listed at 18 retailers as of November 4, 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. Flawless clarity in sub-one-carat stones is rarely visible to the naked eye over VS1, so you are paying a meaningful premium for grade rather than appearance.

The 4Cs

0.78
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG708585978
Dimensions6.27 × 5.61 × 3.81 mm
L/W Ratio1.12
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.27 mm5.61 mm0.78 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG708585978
Side View
Table 61.0%Crown 36.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 60.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $8,981 AUD|Low: $1,429 AUD|High: $10,428 AUD|Avg: $5,443 AUD|-0.6%
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
Retailer 17
Retailer 18
Zales
November 5, 2026
Retailer 10$1,983 AUD
Retailer 8$2,297 AUD
Retailer 11$2,463 AUD
Retailer 14$2,680 AUD
Retailer 15$2,756 AUD
Retailer 3$2,758 AUD
Retailer 17$2,857 AUD
Retailer 4$3,108 AUD
Retailer 6$3,643 AUD
Retailer 5$3,898 AUD
Retailer 12$5,911 AUD
Retailer 16$6,120 AUD
Retailer 7$7,887 AUD
Retailer 13$8,551 AUD
Retailer 18$8,585 AUD
Retailer 1$8,981 AUD
Retailer 2$9,728 AUD
Zales$9,728 AUD
Retailer 9$10,042 AUD

37 data points across 19 retailers

18 retailers$1,983 AUD to $3,898 AUD

B+
Cheapest Retailer
-
$1,983 AUD
Retailer 2
-
$2,297 AUD
View
Price last confirmed 28 days ago
B+
Retailer 3
-
$2,463 AUD
View
B
Retailer 4
-
$2,680 AUD
View
B
Retailer 5
-
$2,756 AUD
View
B
Retailer 6
-
$2,758 AUD
View
Final sale: no returns
B
Retailer 7
-
$2,857 AUD
View
B
Retailer 8
-
$3,108 AUD
View
B
Retailer 9
-
$3,643 AUD
View
B
Retailer 10
-
$3,898 AUD
View
Retailer 11
-
$5,911 AUD
View
Price under review
Retailer 12
-
$6,120 AUD
View
Price under review
Most Expensive
Zales
524692174 · Nov 4
$9,728 AUD
$6,810 USD
View
Price under review
12 more retailers have this diamond
Prices start from $1,983 AUDSave up to $1,916 AUD

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.

B+
0.78ct Heart
$1,983 AUD