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Heart|Lab Grown|IGI

1.78ct E IF Heart Lab Grown Diamond

ID • E/IF • IGI LG578309454

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG578309454

Diamond specifications and retailer prices

From $603 USD
As of October 27, 2026
Save $2,658 USD (82%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $3,261 USD at MOH London · As of October 29, 2026
View at MOH London

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 LG578309454 or 578309454. Listed at 16 retailers as of October 27, 2026, with prices from $603 to $3,261, a $2,658 spread on the same certified stone. MOH London lists it at $3,261. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.9°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG578309454
Dimensions7.23 × 8.34 × 4.99 mm
L/W Ratio1.15
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.23 mm8.34 mm1.78 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG578309454
Side View
Table 59.0%Crown 33.9°Girdle: MED-THKPavilion 41.4°Culet: NoneDepth 59.8%

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 27
Current: $3,261 USD|Low: $578 USD|High: $4,780 USD|Avg: $1,422 USD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 9$603 USD
Retailer 3$675 USD
Retailer 11$675 USD
Retailer 10$747 USD
Retailer 5$774 USD
Retailer 7$875 USD
Retailer 6$1,084 USD
Retailer 2$1,169 USD
Retailer 4$1,778 USD
Retailer 8$2,329 USD
Retailer 12$2,361 USD
MOH London$3,261 USD

45 data points across 12 retailers

16 retailers$603 USD to $3,261 USD

A
Cheapest Retailer
-
$603 USD
A
Retailer 2
-
$675 USD
View
Final sale: no returns
A
Retailer 3
-
$675 USD
View
A
Retailer 4
-
$747 USD
View
A
Retailer 5
-
$774 USD
£609 GBP
View
A
Retailer 6
-
$819 USD
HK$6,400 HKD
View
A
Retailer 7
-
$875 USD
View
A
Retailer 8
-
$1,084 USD
A$1,668 AUD
View
A
Retailer 9
-
$1,169 USD
£921 GBP
View
B+
Retailer 10
-
$1,493 USD
View
B+
Retailer 11
-
$1,778 USD
View
B
Retailer 12
-
$2,329 USD
View
B
Retailer 13
-
$2,361 USD
SGD 3,191 SGD
View
B
Retailer 14
-
$2,416 USD
View
B
Retailer 15
-
$2,478 USD
View
Most Expensive
B
MOH London
LG578309454 · Oct 29
$3,261 USD
£2,568 GBP
View
15 more retailers have this diamond
Prices start from $603 USDSave up to $2,658 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.

A
1.78ct Heart
$603 USD