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Emerald|Lab Grown

1.23ct F SI1 Emerald Lab Grown Diamond

EX • F/SI1 • 1E3C112A54

Diamond specifications and retailer prices

From £137 GBP
As of November 6, 2026
Save £408 GBP (75%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £545 GBP at NZ Jewellers · As of November 6, 2026
View at NZ Jewellers

About this 1.23ct lab-grown emerald diamond

This 1.23ct 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. Listed at 4 retailers as of November 6, 2026, with prices from £137 to £545, a £408 spread on the same certified stone. NZ Jewellers lists it at £545. 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

1.23
Carat
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading Lab
Certificate1E3C112A54
Dimensions7.19 × 5.15 × 3.34 mm
L/W Ratio1.40
Top View
7.19 mm5.15 mm1.23 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Certificate1E3C112A54
Side View
TableCrownGirdlePavilionCuletDepth

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: £545 GBP|Low: £132 GBP|High: £545 GBP|Avg: £237 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
October 15, 2026
Retailer 4£137 GBP
Retailer 3£158 GBP
Retailer 2£169 GBP
NZ Jewellers£545 GBP

9 data points across 4 retailers

4 retailers£137 GBP to £545 GBP

B+
Cheapest Retailer
-
£137 GBP
B+
Retailer 2
-
£158 GBP
View
B+
Retailer 3
-
£169 GBP
View
Most Expensive
C
NZ Jewellers
05721a6f-e8bb-4bda-8ce0-aabe19949814 · Nov 6
£545 GBP
$733 USD
View
3 more retailers have this diamond
Prices start from £137 GBPSave up to £408 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+
1.23ct Emerald
£137 GBP