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Emerald|Lab Grown|IGI

1.00ct J SI1 Emerald Lab Grown Diamond

VG • J/SI1 • IGI LG407981485

Shape and cutting style on the report: Emerald cut

Certificate IGI LG407981485

Diamond specifications and retailer prices

From £433 GBP
$580 USD
As of October 30, 2026
Save £2,233 GBP (84%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £2,666 GBP at MOH London · As of October 29, 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG407981485 or 407981485. Listed at 10 retailers as of October 29, 2026, with prices from £433 to £2,666, a £2,233 spread on the same certified stone. MOH London lists it at £2,666. 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
J
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle27.8°
Pavilion angle39.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG407981485
Dimensions6.50 × 4.75 × 3.37 mm
L/W Ratio1.37
Culet sizeLong
Cert comments
This Laboratory grown diamond was created by chemical vapor deposition process (CVD) Type IIa
Top View
6.50 mm4.75 mm1.00 ctJ / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG407981485
Side View
Table 59.5%Crown 27.8°Girdle: MED-STKPavilion 39.3°Culet: LNGDepth 70.9%

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: Oct 30
Current: £2,666 GBP|Low: £433 GBP|High: £2,684 GBP|Avg: £1,178 GBP|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 2£433 GBP
Retailer 5£674 GBP
Retailer 10£734 GBP
Retailer 6£782 GBP
Retailer 9£782 GBP
Retailer 11£914 GBP
Retailer 3£1,144 GBP
Retailer 7£1,255 GBP
Retailer 4£1,740 GBP
Retailer 8£2,199 GBP
MOH London£2,666 GBP

16 data points across 11 retailers

10 retailers£433 GBP to £2,666 GBP

A
Cheapest Retailer
-
£433 GBP
$580 USD
B+
Retailer 2
-
£674 GBP
$903 USD
View
B+
Retailer 3
-
£734 GBP
$983 USD
View
B
Retailer 4
-
£782 GBP
$1,048 USD
View
Retailer 5
-
£782 GBP
$1,048 USD
View
Price last confirmed 18 days ago
B
Retailer 6
-
£914 GBP
$1,225 USD
View
B
Retailer 7
-
£1,255 GBP
$1,682 USD
View
C
Retailer 8
-
£1,740 GBP
$2,331 USD
View
C
Retailer 9
-
£2,199 GBP
$2,946 USD
View
Most Expensive
C
MOH London
LG407981485 · Oct 29
£2,666 GBP
View
9 more retailers have this diamond
Prices start from £433 GBPSave up to £2,233 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
£433 GBP