Round|Lab Grown|IGI

1.78ct G VVS1 Round Lab Grown Diamond

GD • G/VVS1 • IGI LG647435609

Shape and cutting style on the report: Round brilliant

Certificate IGI LG647435609

Diamond specifications and retailer prices

From $502 USD
As of October 30, 2026
Save $694 USD (58%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $1,196 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 G colour (near-colourless) and VVS1 clarity (very-very-slightly-included), with a standard cut grade and certified by IGI LG647435609 or 647435609. Listed at 4 retailers as of October 26, 2026, with prices from $502 to $1,196, a $694 spread on the same certified stone. MOH London lists it at $1,196. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.78
Carat
G
Color
VVS1
Clarity
Good
Cut

Specifications

CutGood
PolishGood
SymmetryGood
FluorescenceNone
Crown angle34.7°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG647435609
Dimensions7.82 × 7.81 × 4.82 mm
L/W Ratio1.00
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.82 mm7.81 mm1.78 ctG / VVS1
OriginLab Grown
CutGood
PolishGood
SymmetryGood
FluorescenceNone
CertificateIGI LG647435609
Side View
Table 55.0%Crown 34.7°Girdle: MediumPavilion 40.9°Culet: NoneDepth 61.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 30
Current: $1,196 USD|Low: $477 USD|High: $1,209 USD|Avg: $681 USD|+0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 30, 2026
Retailer 3$502 USD
Retailer 5$525 USD
Retailer 2$563 USD
Retailer 4$707 USD
MOH London$1,196 USD

40 data points across 5 retailers

4 retailers$502 USD to $1,196 USD

B
Cheapest Retailer
-
$502 USD
B+
Retailer 2
-
$563 USD
£443 GBP
View
B
Retailer 3
-
$707 USD
View
Most Expensive
B
MOH London
LG647435609 · Oct 26
$1,196 USD
£942 GBP
View
3 more retailers have this diamond
Prices start from $502 USDSave up to $694 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.

B+
1.78ct Round
$502 USD