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Emerald|Lab Grown|IGI

1.51ct F SI1 Emerald Lab Grown Diamond

VG • F/SI1 • IGI LG691548216

Shape and cutting style on the report: Emerald cut

Certificate IGI LG691548216

Diamond specifications and retailer prices

From £331 GBP
As of November 6, 2026
Save £519 GBP (61%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £850 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 1.51ct lab-grown emerald diamond

This 1.51ct lab-grown emerald sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG691548216 or 691548216. Listed at 6 retailers as of November 5, 2026, with prices from £331 to £850, a £519 spread on the same certified stone. MOH London lists it at £850. 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

1.51
Carat
F
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle42.4°
Pavilion angle44.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG691548216
Dimensions7.93 × 5.31 × 3.52 mm
L/W Ratio1.49
Culet sizeLong
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.93 mm5.31 mm1.51 ctF / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG691548216
Side View
Table 74.0%Crown 42.4°Girdle: MED-STKPavilion 44.5°Culet: LNGDepth 66.3%

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: £850 GBP|Low: £313 GBP|High: £862 GBP|Avg: £518 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 4£331 GBP
Retailer 5£383 GBP
Retailer 2£394 GBP
Retailer 3£617 GBP
MOH London£850 GBP

44 data points across 5 retailers

6 retailers£331 GBP to £850 GBP

B+
Cheapest Retailer
-
£331 GBP
B+
Retailer 2
-
£383 GBP
View
B+
Retailer 3
-
£394 GBP
View
B
Retailer 4
-
£617 GBP
View
Retailer 5
-
£643 GBP
View
Price last confirmed 33 days ago
Most Expensive
B
MOH London
LG691548216 · Nov 5
£850 GBP
View
5 more retailers have this diamond
Prices start from £331 GBPSave up to £519 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+
1.51ct Emerald
£331 GBP