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Round|Lab Grown|IGI

1.78ct G VVS2 Round Lab Grown Diamond

EX • G/VVS2 • IGI LG818685283

Shape and cutting style on the report: Round brilliant

Certificate IGI LG818685283

Diamond specifications and retailer prices

From $240 USD
As of October 26, 2026
Save $1,140 USD (83%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $1,380 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 LG818685283 or 818685283. Listed at 23 retailers as of October 26, 2026, with prices from $240 to $1,380, a $1,140 spread on the same certified stone. Brilliant Earth lists it at $1,380. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818685283
Dimensions7.71 × 7.66 × 4.78 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.71 mm7.66 mm1.78 ctG / VVS2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818685283
Side View
Table 60.0%Crown 36.1°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 62.3%

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 26
Current: $1,380 USD|Low: $231 USD|High: $1,730 USD|Avg: $702 USD|-10.4%
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
October 29, 2026
Retailer 3$240 USD
Retailer 6$269 USD
Retailer 9$279 USD
Retailer 7$298 USD
Retailer 12$402 USD
Retailer 17$467 USD
Retailer 11$478 USD
Retailer 14$512 USD
Retailer 13$560 USD
Retailer 8$635 USD
Retailer 15$695 USD
Retailer 18$748 USD
Retailer 10$958 USD
Retailer 16$1,120 USD
Retailer 2$1,200 USD
Retailer 4$1,213 USD
Retailer 5$1,322 USD
Brilliant Earth$1,380 USD

43 data points across 18 retailers

23 retailers$240 USD to $1,380 USD

A
Cheapest Retailer
-
$240 USD
A
Retailer 2
-
$269 USD
View
Final sale: no returns
A
Retailer 3
-
$279 USD
View
A
Retailer 4
-
$298 USD
View
A
Retailer 5
-
$298 USD
View
B+
Retailer 6
-
$402 USD
View
A
Retailer 7
-
$467 USD
£368 GBP
View
Price last confirmed 12 days ago
A
Retailer 8
-
$478 USD
€455 EUR
View
A
Retailer 9
-
$512 USD
ZAR 8,270 ZAR
View
A
Retailer 10
-
$560 USD
£441 GBP
View
B+
Retailer 11
-
$619 USD
View
B+
Retailer 12
-
$627 USD
View
B+
Retailer 13
-
$635 USD
View
B+
Retailer 14
-
$695 USD
A$1,069 AUD
View
B+
Retailer 15
-
$748 USD
View
B+
Retailer 16
-
$958 USD
View
B
Retailer 17
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$1,010 USD
View
B
Retailer 18
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$1,120 USD
View
Price last confirmed 11 days ago
B
Retailer 19
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$1,200 USD
£945 GBP
View
B
Retailer 20
-
$1,213 USD
View
B
Retailer 21
-
$1,218 USD
View
B
Retailer 22
-
$1,322 USD
View
Most Expensive
B
Brilliant Earth
21053173A · Oct 28
$1,380 USD
View
22 more retailers have this diamond
Prices start from $240 USDSave up to $1,140 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
$240 USD