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Emerald|Lab Grown|IGI

3.66ct G SI1 Emerald Lab Grown Diamond

ID • G/SI1 • IGI LG621431858

Shape and cutting style on the report: Emerald cut

Certificate IGI LG621431858

Diamond specifications and retailer prices

From £262 GBP
$351 USD
As of October 27, 2026
Save £2,059 GBP (89%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £2,321 GBP at Do Amore Diamonds · As of October 28, 2026
View at Do Amore Diamonds

About this 3.66ct lab-grown emerald diamond

This 3.66ct lab-grown emerald sits in the three to five carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG621431858 or 621431858. Listed at 11 retailers as of October 27, 2026, with prices from £262 to £2,321, a £2,059 spread on the same certified stone. Do Amore Diamonds lists it at £2,321. 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

3.66
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.6°
Pavilion angle41.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG621431858
Dimensions10.51 × 7.14 × 4.83 mm
L/W Ratio1.47
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
10.51 mm7.14 mm3.66 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG621431858
Side View
Table 66.0%Crown 36.6°Girdle: MediumPavilion 41.5°Culet: LargeDepth 67.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 27
Current: £2,321 GBP|Low: £262 GBP|High: £2,523 GBP|Avg: £1,056 GBP|-8.0%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
October 28, 2026
Retailer 10£262 GBP
Retailer 8£304 GBP
Retailer 3£314 GBP
Retailer 5£473 GBP
Retailer 11£522 GBP
Retailer 2£522 GBP
Retailer 4£676 GBP
Retailer 9£952 GBP
Retailer 12£981 GBP
Retailer 13£1,152 GBP
Retailer 7£1,402 GBP
Retailer 14£2,008 GBP
Retailer 6£2,197 GBP
Do Amore Diamonds£2,321 GBP

23 data points across 14 retailers

11 retailers£262 GBP to £2,321 GBP

A
Cheapest Retailer
-
£262 GBP
$351 USD
A
Retailer 2
-
£304 GBP
$407 USD
View
A
Retailer 3
-
£314 GBP
$421 USD
View
Final sale: no returns
Retailer 4
-
£522 GBP
$699 USD
View
Price last confirmed 7 days ago
Retailer 5
-
£522 GBP
$700 USD
View
Price last confirmed 5 days ago
Retailer 6
-
£952 GBP
$1,275 USD
View
Price last confirmed 7 days ago
B+
Retailer 7
-
£981 GBP
$1,314 USD
View
Retailer 8
-
£1,152 GBP
$1,543 USD
View
Price last confirmed 8 days ago
B+
Retailer 9
-
£1,402 GBP
View
B
Retailer 10
-
£2,008 GBP
$2,690 USD
View
Most Expensive
B
Do Amore Diamonds
27-28B3EAC4A · Oct 28
£2,321 GBP
$3,110 USD
View
10 more retailers have this diamond
Prices start from £262 GBPSave up to £2,059 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
3.66ct Emerald
£262 GBP