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Round|Lab Grown|IGI

1.78ct G VVS2 Round Lab Grown Diamond

ID • G/VVS2 • IGI LG781609698

Shape and cutting style on the report: Round brilliant

Certificate IGI LG781609698

Diamond specifications and retailer prices

From £182 GBP
$243 USD
As of October 29, 2026
Save £996 GBP (85%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £1,179 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 LG781609698 or 781609698. Listed at 22 retailers as of October 28, 2026, with prices from £182 to £1,179, a £996 spread on the same certified stone. Brilliant Earth lists it at £1,179. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.4°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG781609698
Dimensions7.78 × 7.83 × 4.78 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.78 mm7.83 mm1.78 ctG / VVS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG781609698
Side View
Table 57.0%Crown 33.4°Girdle: MediumPavilion 40.9°Culet: NoneDepth 61.3%

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 29
Current: £1,179 GBP|Low: £179 GBP|High: £1,284 GBP|Avg: £560 GBP|-8.2%
Brilliant Earth
Retailer 2
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Retailer 19
October 29, 2026
Retailer 12£182 GBP
Retailer 9£212 GBP
Retailer 8£226 GBP
Retailer 14£355 GBP
Retailer 16£376 GBP
Retailer 3£380 GBP
Retailer 5£389 GBP
Retailer 15£422 GBP
Retailer 2£427 GBP
Retailer 17£472 GBP
Retailer 7£527 GBP
Retailer 11£581 GBP
Retailer 6£728 GBP
Retailer 10£766 GBP
Retailer 4£849 GBP
Retailer 13£912 GBP
Retailer 19£920 GBP
Retailer 18£1,004 GBP
Brilliant Earth£1,179 GBP

32 data points across 19 retailers

22 retailers£182 GBP to £1,179 GBP

A
Cheapest Retailer
-
£182 GBP
$243 USD
A
Retailer 2
-
£212 GBP
$282 USD
View
A
Retailer 3
-
£226 GBP
$301 USD
View
A
Retailer 4
-
£231 GBP
$308 USD
View
A
Retailer 5
-
£355 GBP
View
A
Retailer 6
-
£376 GBP
€477 EUR
View
B+
Retailer 7
-
£380 GBP
$506 USD
View
A
Retailer 8
-
£389 GBP
ZAR 8,363 ZAR
View
A
Retailer 9
-
£422 GBP
$562 USD
View
A
Retailer 10
-
£427 GBP
View
B+
Retailer 11
-
£472 GBP
$628 USD
View
B+
Retailer 12
-
£527 GBP
A$1,080 AUD
View
B+
Retailer 13
-
£581 GBP
$774 USD
View
B+
Retailer 14
-
£678 GBP
$903 USD
View
Price last confirmed 43 days ago
B+
Retailer 15
-
£728 GBP
$969 USD
View
B
Retailer 16
-
£766 GBP
$1,021 USD
View
B
Retailer 17
-
£820 GBP
$1,092 USD
View
B
Retailer 18
-
£849 GBP
$1,130 USD
View
B
Retailer 19
-
£912 GBP
View
B
Retailer 20
-
£920 GBP
$1,225 USD
View
B
Retailer 21
-
£1,004 GBP
$1,337 USD
View
Most Expensive
B
Brilliant Earth
18294398A · Oct 28
£1,179 GBP
$1,570 USD
View
21 more retailers have this diamond
Prices start from £182 GBPSave up to £996 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
£182 GBP