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Heart|Lab Grown|IGI

1.78ct E IF Heart Lab Grown Diamond

EX • E/IF • IGI LG598394224

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG598394224

Diamond specifications and retailer prices

From $1,568 USD
As of October 28, 2026
Save $3,702 USD (70%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $7,264 USD at With Clarity · As of October 30, 2026
View at With Clarity

About this 1.78ct lab-grown heart diamond

This 1.78ct lab-grown heart sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG598394224 or 598394224. Listed at 22 retailers as of October 28, 2026, with a 236% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.78
Carat
E
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG598394224
Dimensions7.51 × 8.32 × 4.90 mm
L/W Ratio1.11
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
7.51 mm8.32 mm1.78 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG598394224
Side View
Table 61.0%Crown 35.2°Girdle: MED-THKPavilion 40.3°Culet: NoneDepth 58.9%

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: Oct 28
Current: $1,657 USD|Low: $1,266 USD|High: $7,264 USD|Avg: $2,710 USD|-2.7%
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
Retailer 17
Retailer 18
With Clarity
October 30, 2026
Retailer 10$1,266 USD
Retailer 8$1,530 USD
Retailer 9$1,530 USD
Retailer 17$1,568 USD
Retailer 18$1,570 USD
Retailer 1$1,657 USD
Retailer 15$1,680 USD
Retailer 2$1,702 USD
Retailer 11$2,116 USD
Retailer 5$2,145 USD
Retailer 12$2,409 USD
Retailer 13$2,759 USD
Retailer 7$2,852 USD
Retailer 6$3,816 USD
Retailer 3$4,124 USD
Retailer 16$4,730 USD
Retailer 14$4,849 USD
Retailer 4$5,270 USD
With Clarity$7,264 USD

34 data points across 19 retailers

22 retailers$1,568 USD to $5,270 USD

Retailer 1
-
$1,266 USD
Price last confirmed 27 days ago
Retailer 2
-
$1,435 USD
View
Price last confirmed 31 days ago
Retailer 3
-
$1,530 USD
View
Price last confirmed 17 days ago
Retailer 4
-
$1,530 USD
View
Price last confirmed 26 days ago
B+
Retailer 5
-
$1,568 USD
View
Final sale: no returns
B+
Retailer 6
-
$1,570 USD
View
B+
Retailer 7
-
$1,657 USD
£1,305 GBP
View
B+
Retailer 8
-
$1,680 USD
View
B+
Retailer 9
-
$1,702 USD
View
B+
Retailer 10
-
$2,116 USD
£1,666 GBP
View
B+
Retailer 11
-
$2,145 USD
View
B+
Retailer 12
-
$2,409 USD
€2,294 EUR
View
B+
Retailer 13
-
$2,759 USD
ZAR 44,578 ZAR
View
B
Retailer 14
-
$2,852 USD
View
Retailer 15
-
$2,868 USD
View
Price last confirmed 29 days ago
Retailer 16
-
$3,816 USD
A$5,870 AUD
View
Price last confirmed 7 days ago
B
Retailer 17
-
$4,124 USD
View
B
Retailer 18
-
$4,730 USD
View
B
Retailer 19
-
$4,730 USD
View
B
Retailer 20
-
$4,849 USD
£3,818 GBP
View
B
Retailer 21
-
$5,270 USD
View
Most Expensive
With Clarity
598394224 · Oct 30
$7,264 USD
View
Price under review
21 more retailers have this diamond
Prices start from $1,568 USDSave up to $3,702 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+
1.78ct Heart
$1,568 USD