Emerald|Lab Grown|IGI

1.20ct D VS1 Emerald Lab Grown Diamond

VG • D/VS1 • IGI LG817653478

Shape and cutting style on the report: Emerald cut

Certificate IGI LG817653478

Diamond specifications and retailer prices

From £131 GBP
$175 USD
As of October 27, 2026
Save £700 GBP (84%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £955 GBP at Brilliant Earth · As of October 12, 2026
View at Brilliant Earth

About this 1.2ct lab-grown emerald diamond

This 1.2ct lab-grown emerald sits in the classic one-carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG817653478 or 817653478. Listed at 17 retailers as of October 25, 2026, with a 536% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.20
Carat
D
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle35.7°
Pavilion angle33.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG817653478
Dimensions6.79 × 4.92 × 4.18 mm
L/W Ratio1.38
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.79 mm4.92 mm1.20 ctD / VS1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG817653478
Side View
Table 72.0%Crown 35.7°Girdle: Very ThickPavilion 33.9°Culet: LargeDepth 70.9%

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 27
Current: £515 GBP|Low: £146 GBP|High: £985 GBP|Avg: £424 GBP|-47.7%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 11£146 GBP
Retailer 3£152 GBP
Retailer 4£218 GBP
Retailer 5£275 GBP
Retailer 7£278 GBP
Retailer 6£288 GBP
Retailer 2£345 GBP
Retailer 10£396 GBP
Retailer 9£508 GBP
Brilliant Earth£515 GBP
Retailer 8£757 GBP
Retailer 12£831 GBP

42 data points across 12 retailers

17 retailers£131 GBP to £831 GBP

A
Cheapest Retailer
-
£131 GBP
$175 USD
A
Retailer 2
-
£146 GBP
$195 USD
View
Final sale: no returns
A
Retailer 3
-
£152 GBP
$203 USD
View
A
Retailer 4
-
£162 GBP
$217 USD
View
B+
Retailer 5
-
£218 GBP
$292 USD
View
A
Retailer 6
-
£275 GBP
€351 EUR
View
A
Retailer 7
-
£278 GBP
ZAR 6,016 ZAR
View
B+
Retailer 8
-
£288 GBP
View
B+
Retailer 9
-
£345 GBP
$462 USD
View
B+
Retailer 10
-
£396 GBP
$531 USD
View
B
Retailer 11
-
£508 GBP
$680 USD
View
B
Retailer 12
-
£515 GBP
$690 USD
View
B
Retailer 13
-
£520 GBP
$697 USD
View
B
Retailer 14
-
£561 GBP
$752 USD
View
B
Retailer 15
-
£757 GBP
View
B
Retailer 16
-
£831 GBP
$1,114 USD
View
Most Expensive
Brilliant Earth
21125690A · Oct 12
£955 GBP
$1,280 USD
View
Price last confirmed 18 days ago
16 more retailers have this diamond
Prices start from £131 GBPSave up to £700 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
1.20ct Emerald
£131 GBP