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Emerald|Lab Grown|IGI

1.00ct I SI1 Emerald Lab Grown Diamond

ID • I/SI1 • IGI LG407950777

Shape and cutting style on the report: Emerald cut

Certificate IGI LG407950777

Diamond specifications and retailer prices

From £358 GBP
$480 USD
As of October 29, 2026
Save £2,576 GBP (88%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £2,935 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1ct lab-grown emerald diamond

This 1ct lab-grown emerald sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG407950777 or 407950777. Listed at 11 retailers as of October 29, 2026, with prices from £358 to £2,935, a £2,576 spread on the same certified stone. MOH London lists it at £2,935. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.00
Carat
I
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle20.8°
Pavilion angle41.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG407950777
Dimensions6.43 × 4.80 × 3.26 mm
L/W Ratio1.34
Culet sizeLong
Cert comments
This Laboratory grown diamond was created by chemical vapor deposition process (CVD) Type IIa
Top View
6.43 mm4.80 mm1.00 ctI / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG407950777
Side View
Table 63.0%Crown 20.8°Girdle: MED-THKPavilion 41.6°Culet: LNGDepth 67.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £2,935 GBP|Low: £358 GBP|High: £2,953 GBP|Avg: £1,296 GBP|+0.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 29, 2026
Retailer 7£358 GBP
Retailer 6£742 GBP
Retailer 12£807 GBP
Retailer 13£831 GBP
Retailer 8£861 GBP
Retailer 11£861 GBP
Retailer 3£993 GBP
Retailer 4£1,239 GBP
Retailer 9£1,375 GBP
Retailer 10£1,613 GBP
Retailer 2£1,855 GBP
Retailer 5£2,464 GBP
MOH London£2,935 GBP

16 data points across 13 retailers

11 retailers£358 GBP to £2,935 GBP

A
Cheapest Retailer
-
£358 GBP
$480 USD
B+
Retailer 2
-
£742 GBP
$994 USD
View
B+
Retailer 3
-
£807 GBP
$1,081 USD
View
B+
Retailer 4
-
£831 GBP
$1,113 USD
View
Final sale: no returns
B
Retailer 5
-
£861 GBP
$1,153 USD
View
Retailer 6
-
£861 GBP
$1,153 USD
View
Price last confirmed 18 days ago
B
Retailer 7
-
£993 GBP
$1,330 USD
View
B
Retailer 8
-
£1,375 GBP
$1,842 USD
View
B
Retailer 9
-
£1,613 GBP
$2,161 USD
View
B
Retailer 10
-
£1,855 GBP
$2,485 USD
View
Most Expensive
B
MOH London
LG407950777 · Oct 29
£2,935 GBP
View
10 more retailers have this diamond
Prices start from £358 GBPSave up to £2,576 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
1.00ct Emerald
£358 GBP