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Emerald|Lab Grown|IGI

1.00ct K SI1 Emerald Lab Grown Diamond

VG • K/SI1 • IGI LG400943085

Shape and cutting style on the report: Emerald cut

Certificate IGI LG400943085

Diamond specifications and retailer prices

From £559 GBP
As of November 6, 2026
Save £1,981 GBP (78%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £2,540 GBP at MOH London · As of November 5, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG400943085 or 400943085. Listed at 9 retailers as of November 5, 2026, with prices from £559 to £2,540, a £1,981 spread on the same certified stone. MOH London lists it at £2,540. 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

1.00
Carat
K
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryGood
FluorescenceNone
Crown angle24.8°
Pavilion angle45.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG400943085
Dimensions6.44 × 4.78 × 3.39 mm
L/W Ratio1.35
Culet sizeLong
Cert comments
This Laboratory grown diamond was created by chemical vapor deposition process (CVD) Type IIa
Top View
6.44 mm4.78 mm1.00 ctK / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryGood
FluorescenceNone
CertificateIGI LG400943085
Side View
Table 65.5%Crown 24.8°Girdle: MED-STKPavilion 45.2°Culet: LNGDepth 70.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £2,540 GBP|Low: £536 GBP|High: £2,581 GBP|Avg: £1,250 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 5, 2026
Retailer 4£559 GBP
Retailer 5£649 GBP
Retailer 7£649 GBP
Retailer 2£780 GBP
Retailer 6£1,050 GBP
Retailer 3£1,542 GBP
MOH London£2,540 GBP

19 data points across 7 retailers

9 retailers£559 GBP to £2,540 GBP

B+
Cheapest Retailer
-
£559 GBP
B+
Retailer 2
-
£609 GBP
View
B+
Retailer 3
-
£649 GBP
View
Retailer 4
-
£649 GBP
View
Price last confirmed 25 days ago
B
Retailer 5
-
£780 GBP
View
B
Retailer 6
-
£1,050 GBP
View
C
Retailer 7
-
£1,542 GBP
View
C
Retailer 8
-
£1,823 GBP
View
Most Expensive
C
MOH London
LG400943085 · Nov 5
£2,540 GBP
View
8 more retailers have this diamond
Prices start from £559 GBPSave up to £1,981 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.

B+
1.00ct Emerald
£559 GBP