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Round|Lab Grown|IGI

1.78ct G VVS2 Round Lab Grown Diamond

ID • G/VVS2 • IGI LG784688459

Shape and cutting style on the report: Round brilliant

Certificate IGI LG784688459

Diamond specifications and retailer prices

From $243 USD
As of October 29, 2026
Save $1,327 USD (85%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $1,570 USD at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

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 VVS2 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG784688459 or 784688459. Listed at 21 retailers as of October 28, 2026, with prices from $243 to $1,570, a $1,327 spread on the same certified stone. Brilliant Earth lists it at $1,570. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.78
Carat
G
Color
VVS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG784688459
Dimensions7.71 × 7.74 × 4.81 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.71 mm7.74 mm1.78 ctG / VVS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG784688459
Side View
Table 58.0%Crown 35.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.2%

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 29
Current: $1,570 USD|Low: $238 USD|High: $1,710 USD|Avg: $731 USD|-8.2%
Brilliant Earth
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
October 29, 2026
Retailer 12$243 USD
Retailer 8$282 USD
Retailer 7$301 USD
Retailer 13$472 USD
Retailer 15$501 USD
Retailer 19$506 USD
Retailer 4$518 USD
Retailer 14$562 USD
Retailer 2$568 USD
Retailer 16$628 USD
Retailer 6$702 USD
Retailer 11$774 USD
Retailer 5$969 USD
Retailer 9$1,021 USD
Retailer 3$1,130 USD
Retailer 18$1,225 USD
Retailer 10$1,236 USD
Retailer 17$1,337 USD
Brilliant Earth$1,570 USD

31 data points across 19 retailers

21 retailers$243 USD to $1,570 USD

A
Cheapest Retailer
-
$243 USD
A
Retailer 2
-
$282 USD
View
A
Retailer 3
-
$301 USD
View
A
Retailer 4
-
$308 USD
View
A
Retailer 5
-
$472 USD
£372 GBP
View
A
Retailer 6
-
$501 USD
€477 EUR
View
B+
Retailer 7
-
$506 USD
View
A
Retailer 8
-
$518 USD
ZAR 8,363 ZAR
View
A
Retailer 9
-
$562 USD
View
A
Retailer 10
-
$568 USD
£448 GBP
View
B+
Retailer 11
-
$628 USD
View
B+
Retailer 12
-
$702 USD
A$1,080 AUD
View
B+
Retailer 13
-
$774 USD
View
B+
Retailer 14
-
$969 USD
View
B
Retailer 15
-
$1,021 USD
View
B
Retailer 16
-
$1,092 USD
View
B
Retailer 17
-
$1,130 USD
View
B
Retailer 18
-
$1,225 USD
View
B
Retailer 19
-
$1,236 USD
£973 GBP
View
B
Retailer 20
-
$1,337 USD
View
Most Expensive
B
Brilliant Earth
18543125A · Oct 28
$1,570 USD
View
20 more retailers have this diamond
Prices start from $243 USDSave up to $1,327 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
$243 USD