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Emerald|Lab Grown|IGI

1.78ct G IF Emerald Lab Grown Diamond

ID • G/IF • IGI LG620498304

Shape and cutting style on the report: Emerald cut

Certificate IGI LG620498304

Diamond specifications and retailer prices

From £241 GBP
$320 USD
As of October 28, 2026
Save £2,228 GBP (90%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £2,468 GBP at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 1.78ct lab-grown emerald diamond

This 1.78ct lab-grown emerald sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG620498304 or 620498304. Listed at 22 retailers as of October 28, 2026, with prices from £241 to £2,468, a £2,228 spread on the same certified stone. Brilliant Earth lists it at £2,468. 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
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.6°
Pavilion angle36.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG620498304
Dimensions7.90 × 5.74 × 3.92 mm
L/W Ratio1.38
Culet sizeLong
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II Faint Blue
Top View
7.90 mm5.74 mm1.78 ctG / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG620498304
Side View
Table 66.0%Crown 37.6°Girdle: MediumPavilion 36.6°Culet: LNGDepth 68.3%

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 28
Current: £2,468 GBP|Low: £241 GBP|High: £2,468 GBP|Avg: £746 GBP
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
October 29, 2026
Retailer 4£241 GBP
Retailer 3£250 GBP
Retailer 13£355 GBP
Retailer 9£384 GBP
Retailer 2£417 GBP
Retailer 7£458 GBP
Retailer 8£468 GBP
Retailer 5£471 GBP
Retailer 12£820 GBP
Retailer 14£1,026 GBP
Retailer 6£1,044 GBP
Retailer 10£1,074 GBP
Retailer 11£1,780 GBP
Brilliant Earth£2,468 GBP

41 data points across 14 retailers

22 retailers£241 GBP to £2,468 GBP

A
Retailer 1
-
£215 GBP
$286 USD
Price last confirmed 10 days ago
A
Retailer 2
-
£241 GBP
$320 USD
View
Final sale: no returns
A
Retailer 3
-
£250 GBP
$332 USD
View
Price last confirmed 9 days ago
A
Retailer 4
-
£266 GBP
$354 USD
View
Price last confirmed 9 days ago
A
Retailer 5
-
£266 GBP
$354 USD
View
Price last confirmed 13 days ago
B+
Retailer 6
-
£355 GBP
$472 USD
View
A
Retailer 7
-
£384 GBP
$510 USD
View
A
Retailer 8
-
£417 GBP
€528 EUR
View
A
Retailer 9
-
£458 GBP
ZAR 9,839 ZAR
View
A
Retailer 10
-
£468 GBP
View
A
Retailer 11
-
£471 GBP
$626 USD
View
A
Retailer 12
-
£579 GBP
$769 USD
View
Price last confirmed 15 days ago
B+
Retailer 13
-
£820 GBP
$1,089 USD
View
B+
Retailer 14
-
£857 GBP
$1,139 USD
View
Price last confirmed 10 days ago
B+
Retailer 15
-
£895 GBP
$1,189 USD
View
B+
Retailer 16
-
£925 GBP
$1,229 USD
View
B+
Retailer 17
-
£1,026 GBP
$1,363 USD
View
B+
Retailer 18
-
£1,044 GBP
View
Price last confirmed 20 days ago
B+
Retailer 19
-
£1,074 GBP
View
B+
Retailer 20
-
£1,103 GBP
$1,465 USD
View
B
Retailer 21
-
£1,780 GBP
$2,365 USD
View
Price last confirmed 10 days ago
Most Expensive
B
Brilliant Earth
16509102A · Oct 28
£2,468 GBP
$3,280 USD
View
21 more retailers have this diamond
Prices start from £241 GBPSave up to £2,228 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 Emerald
£241 GBP