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Asscher|Lab Grown|IGI

1.78ct D FL Asscher Lab Grown Diamond

ID • D/FL • IGI LG830624089

Shape and cutting style on the report: Square emerald cut

Certificate IGI LG830624089

Diamond specifications and retailer prices

From $426 USD
As of November 4, 2026
Save $3,554 USD (89%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $3,980 USD at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.78ct lab-grown asscher diamond

This 1.78ct lab-grown asscher 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 LG830624089 or 830624089. Listed at 21 retailers as of November 4, 2026, with prices from $426 to $3,980, a $3,554 spread on the same certified stone. Brilliant Earth lists it at $3,980. 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
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle39.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG830624089
Dimensions6.70 × 6.68 × 4.39 mm
L/W Ratio1.00
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
6.70 mm6.68 mm1.78 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG830624089
Side View
Table 60.0%Crown 35.9°Girdle: MediumPavilion 39.2°Culet: NoneDepth 65.7%

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: Nov 4
Current: $3,980 USD|Low: $426 USD|High: $5,690 USD|Avg: $1,736 USD|-30.1%
Brilliant Earth
Retailer 2
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Retailer 20
November 5, 2026
Retailer 14$426 USD
Retailer 5$477 USD
Retailer 6$528 USD
Retailer 17$536 USD
Retailer 20$675 USD
Retailer 18$833 USD
Retailer 13$862 USD
Retailer 9$979 USD
Retailer 11$1,169 USD
Retailer 4$1,286 USD
Retailer 3$1,400 USD
Retailer 16$1,697 USD
Retailer 15$1,730 USD
Retailer 8$1,832 USD
Retailer 2$1,934 USD
Retailer 7$1,977 USD
Retailer 12$2,301 USD
Retailer 19$2,730 USD
Retailer 10$3,920 USD
Brilliant Earth$3,980 USD

28 data points across 20 retailers

21 retailers$426 USD to $3,980 USD

A
Cheapest Retailer
-
$426 USD
A
Retailer 2
-
$477 USD
View
A
Retailer 3
-
$528 USD
View
A
Retailer 4
-
$536 USD
View
Final sale: no returns
A
Retailer 5
-
$675 USD
View
Retailer 6
-
$740 USD
View
Price last confirmed 20 days ago
A
Retailer 7
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$833 USD
View
A
Retailer 8
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$862 USD
View
A
Retailer 9
-
$979 USD
View
Retailer 10
-
$1,169 USD
View
Price last confirmed 7 days ago
B+
Retailer 11
-
$1,286 USD
View
B+
Retailer 12
-
$1,400 USD
View
B+
Retailer 13
-
$1,697 USD
View
B+
Retailer 14
-
$1,730 USD
View
B+
Retailer 15
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$1,832 USD
View
B+
Retailer 16
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$1,934 USD
View
B+
Retailer 17
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$1,977 USD
View
Retailer 18
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$2,301 USD
View
Price last confirmed 15 days ago
B
Retailer 19
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$2,730 USD
View
B
Retailer 20
-
$3,920 USD
View
Most Expensive
B
Brilliant Earth
21416980A · Nov 4
$3,980 USD
View
20 more retailers have this diamond
Prices start from $426 USDSave up to $3,554 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 Asscher
$426 USD