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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 $1,388 USD
As of November 1, 2026
Save $1,342 USD (49%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $6,810 USD at Zales · As of October 30, 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 1, 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $6,308 USD|Low: $1,000 USD|High: $7,300 USD|Avg: $3,710 USD|-0.3%
Retailer 1
Retailer 2
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Retailer 11
Retailer 12
Retailer 13
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Retailer 18
Zales
November 1, 2026
Retailer 10$1,388 USD
Retailer 8$1,609 USD
Retailer 18$1,725 USD
Retailer 17$1,877 USD
Retailer 4$1,929 USD
Retailer 2$1,931 USD
Retailer 12$2,001 USD
Retailer 3$2,176 USD
Retailer 6$2,550 USD
Retailer 5$2,730 USD
Retailer 15$4,140 USD
Retailer 13$4,274 USD
Retailer 7$5,521 USD
Retailer 16$5,990 USD
Retailer 11$6,011 USD
Retailer 1$6,308 USD
Retailer 14$6,810 USD
Zales$6,810 USD
Retailer 9$7,030 USD

36 data points across 19 retailers

18 retailers$1,388 USD to $2,730 USD

B+
Cheapest Retailer
-
$1,388 USD
Retailer 2
-
$1,609 USD
A$2,475 AUD
View
Price last confirmed 25 days ago
B+
Retailer 3
-
$1,725 USD
View
B
Retailer 4
-
$1,877 USD
View
B
Retailer 5
-
$1,929 USD
A$2,968 AUD
View
B
Retailer 6
-
$1,931 USD
View
Final sale: no returns
B
Retailer 7
-
$2,001 USD
View
B
Retailer 8
-
$2,176 USD
View
B
Retailer 9
-
$2,550 USD
View
B
Retailer 10
-
$2,730 USD
CA$3,791 CAD
View
Retailer 11
-
$4,140 USD
View
Price under review
Retailer 12
-
$4,274 USD
ZAR 69,046 ZAR
View
Price under review
Most Expensive
Zales
524692174 · Oct 30
$6,810 USD
View
Price under review
12 more retailers have this diamond
Prices start from $1,388 USDSave up to $1,342 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.

B+
0.78ct Heart
$1,388 USD