CaratHunter
Plans
Emerald|Lab Grown|IGI

1.00ct F SI1 Emerald Lab Grown Diamond

ID • F/SI1 • IGI LG598377876

Shape and cutting style on the report: Emerald cut

Certificate IGI LG598377876

Diamond specifications and retailer prices

From £127 GBP
As of November 6, 2026
Save £612 GBP (83%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £739 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 top-tier cut grade and certified by IGI LG598377876 or 598377876. Listed at 17 retailers as of November 2, 2026, with prices from £127 to £739, a £612 spread on the same certified stone. MOH London lists it at £739. 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
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.2°
Pavilion angle42.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG598377876
Dimensions6.21 × 4.48 × 3.43 mm
L/W Ratio1.39
Culet sizeLong
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
6.21 mm4.48 mm1.00 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG598377876
Side View
Table 66.0%Crown 38.2°Girdle: STK-THKPavilion 42.9°Culet: LNGDepth 76.6%

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: Nov 6
Current: £739 GBP|Low: £123 GBP|High: £747 GBP|Avg: £344 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 9£127 GBP
Retailer 10£158 GBP
Retailer 11£158 GBP
Retailer 2£279 GBP
Retailer 8£282 GBP
Retailer 4£290 GBP
Retailer 7£293 GBP
Retailer 3£337 GBP
Retailer 5£399 GBP
Retailer 6£646 GBP
MOH London£739 GBP

45 data points across 11 retailers

17 retailers£127 GBP to £739 GBP

A
Cheapest Retailer
-
£127 GBP
Retailer 2
-
£127 GBP
View
Price last confirmed 44 days ago
Retailer 3
-
£148 GBP
View
Price last confirmed 43 days ago
Retailer 4
-
£156 GBP
View
Price last confirmed 42 days ago
A
Retailer 5
-
£158 GBP
View
Retailer 6
-
£158 GBP
View
Price last confirmed 12 days ago
Retailer 7
-
£181 GBP
View
Price last confirmed 63 days ago
B+
Retailer 8
-
£279 GBP
View
B+
Retailer 9
-
£282 GBP
View
B+
Retailer 10
-
£290 GBP
View
Retailer 11
-
£293 GBP
View
Price last confirmed 8 days ago
B+
Retailer 12
-
£337 GBP
View
B
Retailer 13
-
£399 GBP
View
Retailer 14
-
£432 GBP
View
Price last confirmed 30 days ago
B
Retailer 15
-
£507 GBP
View
B
Retailer 16
-
£646 GBP
View
Most Expensive
B
MOH London
LG598377876 · Nov 2
£739 GBP
View
16 more retailers have this diamond
Prices start from £127 GBPSave up to £612 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
£127 GBP