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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 $299 AUD
$210 USD
As of October 29, 2026
Save $1,346 AUD (82%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $1,645 AUD 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 $299 to $1,645, a $1,346 spread on the same certified stone. MOH London lists it at $1,645. 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
Colour
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: $1,645 AUD|Low: $248 AUD|High: $2,164 AUD|Avg: $989 AUD|-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$299 AUD
Retailer 13$339 AUD
Retailer 11$347 AUD
Retailer 10$638 AUD
Retailer 2$711 AUD
Retailer 4$800 AUD
Retailer 5$877 AUD
Retailer 14$1,083 AUD
Retailer 3$1,149 AUD
Retailer 8$1,199 AUD
Retailer 7$1,239 AUD
Retailer 9$1,318 AUD
MOH London$1,645 AUD
Retailer 6$2,164 AUD

32 data points across 14 retailers

9 retailers$299 AUD to $1,645 AUD

A
Cheapest Retailer
-
$299 AUD
$210 USD
A
Retailer 2
-
$339 AUD
$238 USD
View
Final sale: no returns
A
Retailer 3
-
$347 AUD
$244 USD
View
B+
Retailer 4
-
$638 AUD
$448 USD
View
A
Retailer 5
-
$711 AUD
£393 GBP
View
B
Retailer 6
-
$1,199 AUD
$842 USD
View
B
Retailer 7
-
$1,239 AUD
$870 USD
View
B+
Retailer 8
-
$1,318 AUD
$926 USD
View
Most Expensive
B
MOH London
LG582393761 · Oct 26
$1,645 AUD
£910 GBP
View
8 more retailers have this diamond
Prices start from $299 AUDSave up to $1,346 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 Round
$299 AUD