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Emerald|Lab Grown|IGI

1.00ct F SI1 Emerald Lab Grown Diamond

VG • F/SI1 • IGI LG407998175

Shape and cutting style on the report: Emerald cut

Certificate IGI LG407998175

Diamond specifications and retailer prices

From £124 GBP
As of November 5, 2026
Save £517 GBP (81%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £641 GBP at MOH London · As of November 2, 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 F colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG407998175 or 407998175. Listed at 19 retailers as of November 2, 2026, with prices from £124 to £641, a £517 spread on the same certified stone. MOH London lists it at £641. 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
F
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishGood
SymmetryGood
FluorescenceNone
Crown angle34.5°
Pavilion angle36.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG407998175
Dimensions6.97 × 4.67 × 3.01 mm
L/W Ratio1.49
Culet sizeLarge
Cert comments
This Laboratory grown diamond was created by high pressure high temperature process (HPHT) Type II
Top View
6.97 mm4.67 mm1.00 ctF / SI1
OriginLab Grown
CutVery Good
PolishGood
SymmetryGood
FluorescenceNone
CertificateIGI LG407998175
Side View
Table 66.0%Crown 34.5°Girdle: THK-VTKPavilion 36.7°Culet: LargeDepth 64.5%

Caratlytics Score

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

Price History

Last verified: Nov 5
Current: £641 GBP|Low: £106 GBP|High: £654 GBP|Avg: £303 GBP
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
November 6, 2026
Retailer 11£111 GBP
Retailer 3£124 GBP
Retailer 9£137 GBP
Retailer 13£137 GBP
Retailer 5£197 GBP
Retailer 2£235 GBP
Retailer 7£241 GBP
Retailer 8£260 GBP
Retailer 6£290 GBP
Retailer 4£374 GBP
Retailer 10£466 GBP
Retailer 12£639 GBP
MOH London£641 GBP

45 data points across 13 retailers

19 retailers£124 GBP to £641 GBP

Retailer 1
-
£111 GBP
Price last confirmed 44 days ago
Retailer 2
-
£111 GBP
View
Price last confirmed 18 days ago
B+
Retailer 3
-
£124 GBP
View
Final sale: no returns
Retailer 4
-
£129 GBP
View
Price last confirmed 43 days ago
Retailer 5
-
£135 GBP
View
Price last confirmed 42 days ago
Retailer 6
-
£137 GBP
View
Price last confirmed 12 days ago
Retailer 7
-
£137 GBP
View
Price last confirmed 20 days ago
B+
Retailer 8
-
£137 GBP
View
B
Retailer 9
-
£197 GBP
View
B+
Retailer 10
-
£235 GBP
View
Retailer 11
-
£241 GBP
View
Price last confirmed 8 days ago
Retailer 12
-
£260 GBP
View
Price last confirmed 7 days ago
B+
Retailer 13
-
£290 GBP
View
B
Retailer 14
-
£374 GBP
View
Retailer 15
-
£377 GBP
View
Price last confirmed 24 days ago
Retailer 16
-
£441 GBP
View
Price last confirmed 19 days ago
B
Retailer 17
-
£466 GBP
View
C
Retailer 18
-
£639 GBP
View
Most Expensive
B
MOH London
LG407998175 · Nov 2
£641 GBP
View
18 more retailers have this diamond
Prices start from £124 GBPSave up to £517 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
£124 GBP