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Emerald|Lab Grown|IGI

1.78ct D IF Emerald Lab Grown Diamond

ID • D/IF • IGI LG694550134

Shape and cutting style on the report: Emerald cut

Certificate IGI LG694550134

Diamond specifications and retailer prices

From £255 GBP
$342 USD
As of October 30, 2026
Save £1,767 GBP (87%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £3,351 GBP at Brilliant Earth · As of October 20, 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 D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG694550134 or 694550134. Listed at 15 retailers as of October 29, 2026, with a 692% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.78
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle41.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG694550134
Dimensions5.65 × 5.65 × 8.37 mm
L/W Ratio1.00
Culet sizeLarge
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
Top View
5.65 mm5.65 mm1.78 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG694550134
Side View
Table 63.0%Crown 34.6°Girdle: MediumPavilion 41.9°Culet: LargeDepth 67.3%

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 30
Current: £3,351 GBP|Low: £181 GBP|High: £3,620 GBP|Avg: £1,048 GBP|+3.2%
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
October 28, 2026
Retailer 13£228 GBP
Retailer 4£255 GBP
Retailer 17£264 GBP
Retailer 14£283 GBP
Retailer 16£283 GBP
Retailer 12£378 GBP
Retailer 2£381 GBP
Retailer 3£484 GBP
Retailer 7£487 GBP
Retailer 11£731 GBP
Retailer 5£796 GBP
Retailer 15£1,086 GBP
Retailer 9£1,454 GBP
Retailer 8£1,762 GBP
Retailer 6£2,023 GBP
Retailer 10£2,683 GBP
Brilliant Earth£3,351 GBP

22 data points across 17 retailers

15 retailers£255 GBP to £2,023 GBP

Retailer 1
-
£228 GBP
$305 USD
Price last confirmed 20 days ago
A
Retailer 2
-
£255 GBP
$342 USD
View
Final sale: no returns
Retailer 3
-
£264 GBP
$354 USD
View
Price last confirmed 21 days ago
Retailer 4
-
£283 GBP
$379 USD
View
Price last confirmed 28 days ago
Retailer 5
-
£283 GBP
$379 USD
View
Price last confirmed 18 days ago
B+
Retailer 6
-
£378 GBP
$506 USD
View
A
Retailer 7
-
£381 GBP
$510 USD
View
A
Retailer 8
-
£484 GBP
$648 USD
View
A
Retailer 9
-
£731 GBP
$979 USD
View
Retailer 10
-
£793 GBP
$1,062 USD
View
Price last confirmed 32 days ago
A
Retailer 11
-
£796 GBP
$1,067 USD
View
B+
Retailer 12
-
£1,086 GBP
$1,455 USD
View
B
Retailer 13
-
£2,023 GBP
$2,710 USD
View
Retailer 14
-
£2,683 GBP
$3,595 USD
View
Price last confirmed 9 days ago
Most Expensive
Brilliant Earth
20126588A · Oct 20
£3,351 GBP
$4,490 USD
View
Price last confirmed 10 days ago
14 more retailers have this diamond
Prices start from £255 GBPSave up to £1,767 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
£255 GBP