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Emerald|Lab Grown|IGI

1.78ct D FL Emerald Lab Grown Diamond

ID • D/FL • IGI LG825660129

Shape and cutting style on the report: Emerald cut

Certificate IGI LG825660129

Diamond specifications and retailer prices

From $671 AUD
$471 USD
As of October 30, 2026
Save $5,515 AUD (89%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $6,257 AUD at Rare Carat · As of October 14, 2026
View at Rare Carat

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 FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG825660129 or 825660129. Listed at 22 retailers as of October 28, 2026, with a 823% 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
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG825660129
Dimensions8.10 × 5.74 × 3.91 mm
L/W Ratio1.41
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
8.10 mm5.74 mm1.78 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG825660129
Side View
Table 64.0%Crown 34.5°Girdle: MediumPavilion 40.6°Culet: LargeDepth 68.1%

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 30
Current: $6,186 AUD|Low: $671 AUD|High: $8,115 AUD|Avg: $2,734 AUD|-2.0%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
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Retailer 14
Retailer 15
Retailer 16
Retailer 17
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Retailer 19
Retailer 20
October 30, 2026
Retailer 10$671 AUD
Retailer 6$752 AUD
Retailer 7$752 AUD
Retailer 20$831 AUD
Retailer 18$1,032 AUD
Retailer 15$1,272 AUD
Retailer 9$1,300 AUD
Retailer 14$1,380 AUD
Retailer 17$1,430 AUD
Retailer 19$1,939 AUD
Retailer 4$2,016 AUD
Retailer 11$2,641 AUD
Retailer 12$2,647 AUD
Retailer 3$2,675 AUD
Retailer 5$2,717 AUD
Retailer 13$2,923 AUD
Retailer 16$3,074 AUD
Retailer 8$3,623 AUD
Retailer 2$5,666 AUD
Rare Carat$6,186 AUD

35 data points across 20 retailers

22 retailers$671 AUD to $6,186 AUD

A
Cheapest Retailer
-
$671 AUD
$471 USD
A
Retailer 2
-
$752 AUD
$528 USD
View
Final sale: no returns
A
Retailer 3
-
$752 AUD
$528 USD
View
A
Retailer 4
-
$831 AUD
$584 USD
View
Retailer 5
-
$905 AUD
$636 USD
View
Price last confirmed 14 days ago
A
Retailer 6
-
$1,032 AUD
$725 USD
View
A
Retailer 7
-
$1,272 AUD
€851 EUR
View
A
Retailer 8
-
$1,300 AUD
$913 USD
View
A
Retailer 9
-
$1,380 AUD
£763 GBP
View
A
Retailer 10
-
$1,430 AUD
ZAR 16,226 ZAR
View
B+
Retailer 11
-
$1,939 AUD
$1,362 USD
View
B+
Retailer 12
-
$2,016 AUD
$1,416 USD
View
B+
Retailer 13
-
$2,641 AUD
SGD 2,507 SGD
View
Retailer 14
-
$2,647 AUD
£1,464 GBP
View
Price last confirmed 8 days ago
B+
Retailer 15
-
$2,675 AUD
$1,879 USD
View
B
Retailer 16
-
$2,717 AUD
$1,908 USD
View
B+
Retailer 17
-
$2,923 AUD
$2,053 USD
View
B+
Retailer 18
-
$3,074 AUD
£1,700 GBP
View
B+
Retailer 19
-
$3,623 AUD
$2,545 USD
View
B
Retailer 20
-
$5,666 AUD
$3,980 USD
View
B
Retailer 21
-
$6,186 AUD
$4,345 USD
View
Most Expensive
Rare Carat
PD1296601JJ825 · Oct 14
$6,257 AUD
$4,395 USD
View
Price last confirmed 16 days ago
21 more retailers have this diamond
Prices start from $671 AUDSave up to $5,515 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
$671 AUD