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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 £180 GBP
$240 USD
As of October 26, 2026
Save £856 GBP (83%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £1,036 GBP 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 £180 to £1,036, a £856 spread on the same certified stone. Brilliant Earth lists it at £1,036. 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
Colour
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

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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 26
Current: £1,036 GBP|Low: £173 GBP|High: £1,299 GBP|Avg: £527 GBP|-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£180 GBP
Retailer 6£202 GBP
Retailer 9£210 GBP
Retailer 7£224 GBP
Retailer 12£302 GBP
Retailer 17£351 GBP
Retailer 11£359 GBP
Retailer 14£384 GBP
Retailer 13£420 GBP
Retailer 8£477 GBP
Retailer 15£522 GBP
Retailer 18£562 GBP
Retailer 10£719 GBP
Retailer 16£841 GBP
Retailer 2£901 GBP
Retailer 4£911 GBP
Retailer 5£993 GBP
Brilliant Earth£1,036 GBP

43 data points across 18 retailers

23 retailers£180 GBP to £1,036 GBP

A
Cheapest Retailer
-
£180 GBP
$240 USD
A
Retailer 2
-
£202 GBP
$269 USD
View
Final sale: no returns
A
Retailer 3
-
£210 GBP
$279 USD
View
A
Retailer 4
-
£224 GBP
$298 USD
View
A
Retailer 5
-
£224 GBP
$298 USD
View
B+
Retailer 6
-
£302 GBP
$402 USD
View
A
Retailer 7
-
£351 GBP
View
Price last confirmed 12 days ago
A
Retailer 8
-
£359 GBP
€455 EUR
View
A
Retailer 9
-
£384 GBP
ZAR 8,270 ZAR
View
A
Retailer 10
-
£420 GBP
View
B+
Retailer 11
-
£465 GBP
$619 USD
View
B+
Retailer 12
-
£471 GBP
$627 USD
View
B+
Retailer 13
-
£477 GBP
$635 USD
View
B+
Retailer 14
-
£522 GBP
A$1,069 AUD
View
B+
Retailer 15
-
£562 GBP
$748 USD
View
B+
Retailer 16
-
£719 GBP
$958 USD
View
B
Retailer 17
-
£758 GBP
$1,010 USD
View
B
Retailer 18
-
£841 GBP
$1,120 USD
View
Price last confirmed 11 days ago
B
Retailer 19
-
£901 GBP
View
B
Retailer 20
-
£911 GBP
$1,213 USD
View
B
Retailer 21
-
£915 GBP
$1,218 USD
View
B
Retailer 22
-
£993 GBP
$1,322 USD
View
Most Expensive
B
Brilliant Earth
21053173A · Oct 28
£1,036 GBP
$1,380 USD
View
22 more retailers have this diamond
Prices start from £180 GBPSave up to £856 GBP

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
£180 GBP