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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 $487 AUD
$342 USD
As of October 28, 2026
Save $3,371 AUD (87%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $6,392 AUD 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
Colour
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: $6,392 AUD|Low: $346 AUD|High: $6,904 AUD|Avg: $1,999 AUD|+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$434 AUD
Retailer 4$487 AUD
Retailer 17$504 AUD
Retailer 14$540 AUD
Retailer 16$540 AUD
Retailer 12$720 AUD
Retailer 2$726 AUD
Retailer 3$922 AUD
Retailer 7$929 AUD
Retailer 11$1,394 AUD
Retailer 5$1,519 AUD
Retailer 15$2,071 AUD
Retailer 9$2,774 AUD
Retailer 8$3,361 AUD
Retailer 6$3,858 AUD
Retailer 10$5,118 AUD
Brilliant Earth$6,392 AUD

22 data points across 17 retailers

15 retailers$487 AUD to $3,858 AUD

Retailer 1
-
$434 AUD
$305 USD
Price last confirmed 19 days ago
A
Retailer 2
-
$487 AUD
$342 USD
View
Final sale: no returns
Retailer 3
-
$504 AUD
$354 USD
View
Price last confirmed 20 days ago
Retailer 4
-
$540 AUD
$379 USD
View
Price last confirmed 27 days ago
Retailer 5
-
$540 AUD
$379 USD
View
Price last confirmed 18 days ago
B+
Retailer 6
-
$720 AUD
$506 USD
View
A
Retailer 7
-
$726 AUD
$510 USD
View
A
Retailer 8
-
$922 AUD
$648 USD
View
Retailer 9
-
$1,394 AUD
$979 USD
View
Price last confirmed 7 days ago
Retailer 10
-
$1,512 AUD
$1,062 USD
View
Price last confirmed 31 days ago
A
Retailer 11
-
$1,519 AUD
$1,067 USD
View
B+
Retailer 12
-
$2,071 AUD
$1,455 USD
View
B
Retailer 13
-
$3,858 AUD
$2,710 USD
View
Retailer 14
-
$5,118 AUD
$3,595 USD
View
Price last confirmed 9 days ago
Most Expensive
Brilliant Earth
20126588A · Oct 20
$6,392 AUD
$4,490 USD
View
Price last confirmed 10 days ago
14 more retailers have this diamond
Prices start from $487 AUDSave up to $3,371 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.

A
1.78ct Emerald
$487 AUD