Emerald|Lab Grown|IGI

1.78ct D IF Emerald Lab Grown Diamond

ID • D/IF • IGI LG694550134

Shape and cutting style on the report: Emerald cut

Certificate IGI LG694550134

Diamond specifications and retailer prices

From $342 USD
As of October 28, 2026
Save $2,368 USD (87%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $4,490 USD at Brilliant Earth · As of October 20, 2026
View at Brilliant Earth

About this 1.78ct lab-grown emerald diamond

This 1.78ct lab-grown emerald sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG694550134 or 694550134. Listed at 15 retailers as of October 28, 2026, with a 692% 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
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle41.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG694550134
Dimensions5.65 × 5.65 × 8.37 mm
L/W Ratio1.00
Culet sizeLarge
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
5.65 mm5.65 mm1.78 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG694550134
Side View
Table 63.0%Crown 34.6°Girdle: MediumPavilion 41.9°Culet: LargeDepth 67.3%

Caratlytics Score

How it works →
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 28
Current: $4,490 USD|Low: $243 USD|High: $4,850 USD|Avg: $1,404 USD|+3.2%
Brilliant Earth
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
October 28, 2026
Retailer 13$305 USD
Retailer 4$342 USD
Retailer 17$354 USD
Retailer 14$379 USD
Retailer 16$379 USD
Retailer 12$506 USD
Retailer 2$510 USD
Retailer 3$648 USD
Retailer 7$653 USD
Retailer 11$979 USD
Retailer 5$1,067 USD
Retailer 15$1,455 USD
Retailer 9$1,949 USD
Retailer 8$2,361 USD
Retailer 6$2,710 USD
Retailer 10$3,595 USD
Brilliant Earth$4,490 USD

22 data points across 17 retailers

15 retailers$342 USD to $2,710 USD

Retailer 1
-
$305 USD
Price last confirmed 18 days ago
A
Retailer 2
-
$342 USD
View
Final sale: no returns
Retailer 3
-
$354 USD
View
Price last confirmed 20 days ago
Retailer 4
-
$379 USD
View
Price last confirmed 26 days ago
Retailer 5
-
$379 USD
View
Price last confirmed 17 days ago
B+
Retailer 6
-
$506 USD
View
A
Retailer 7
-
$510 USD
View
A
Retailer 8
-
$648 USD
View
A
Retailer 9
-
$979 USD
View
Retailer 10
-
$1,062 USD
View
Price last confirmed 30 days ago
A
Retailer 11
-
$1,067 USD
View
B+
Retailer 12
-
$1,455 USD
View
B
Retailer 13
-
$2,710 USD
View
Retailer 14
-
$3,595 USD
View
Price last confirmed 8 days ago
Most Expensive
Brilliant Earth
20126588A · Oct 20
$4,490 USD
View
Price last confirmed 9 days ago
14 more retailers have this diamond
Prices start from $342 USDSave up to $2,368 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 Emerald
$342 USD