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Round|Lab Grown|IGI

1.78ct F SI2 Round Lab Grown Diamond

ID • F/SI2 • IGI LG582393761

Shape and cutting style on the report: Round brilliant

Certificate IGI LG582393761

Diamond specifications and retailer prices

From $210 USD
As of October 29, 2026
Save $946 USD (82%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $1,156 USD at MOH London · As of October 26, 2026
View at MOH London

About this 1.78ct lab-grown round diamond

This 1.78ct lab-grown round sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG582393761 or 582393761. Listed at 9 retailers as of October 26, 2026, with prices from $210 to $1,156, a $946 spread on the same certified stone. MOH London lists it at $1,156. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.78
Carat
F
Color
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG582393761
Dimensions7.74 × 7.72 × 4.80 mm
L/W Ratio1.00
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
7.74 mm7.72 mm1.78 ctF / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG582393761
Side View
Table 58.0%Crown 35.4°Girdle: MediumPavilion 40.8°Culet: NoneDepth 62.1%

Caratlytics Score

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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 29
Current: $1,156 USD|Low: $174 USD|High: $1,520 USD|Avg: $695 USD|-2.2%
MOH London
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
October 29, 2026
Retailer 12$210 USD
Retailer 13$238 USD
Retailer 11$244 USD
Retailer 10$448 USD
Retailer 2$500 USD
Retailer 4$562 USD
Retailer 5$616 USD
Retailer 14$761 USD
Retailer 3$807 USD
Retailer 8$842 USD
Retailer 7$870 USD
Retailer 9$926 USD
MOH London$1,156 USD
Retailer 6$1,520 USD

32 data points across 14 retailers

9 retailers$210 USD to $1,156 USD

A
Cheapest Retailer
-
$210 USD
A
Retailer 2
-
$238 USD
View
Final sale: no returns
A
Retailer 3
-
$244 USD
View
B+
Retailer 4
-
$448 USD
View
A
Retailer 5
-
$500 USD
£393 GBP
View
B
Retailer 6
-
$842 USD
View
B
Retailer 7
-
$870 USD
View
B+
Retailer 8
-
$926 USD
View
Most Expensive
B
MOH London
LG582393761 · Oct 26
$1,156 USD
£910 GBP
View
8 more retailers have this diamond
Prices start from $210 USDSave up to $946 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 Round
$210 USD