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Emerald|Lab Grown|IGI

1.73ct E SI1 Emerald Lab Grown Diamond

ID • E/SI1 • IGI LG701503478

Shape and cutting style on the report: Emerald cut

Certificate IGI LG701503478

Diamond specifications and retailer prices

From £177 GBP
$236 USD
As of October 27, 2026
Save £1,167 GBP (87%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,344 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.73ct lab-grown emerald diamond

This 1.73ct lab-grown emerald sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG701503478 or 701503478. Listed at 15 retailers as of October 27, 2026, with prices from £177 to £1,344, a £1,167 spread on the same certified stone. Brilliant Earth lists it at £1,344. 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

1.73
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle28.8°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG701503478
Dimensions8.35 × 5.70 × 3.80 mm
L/W Ratio1.46
Culet sizeLarge
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
8.35 mm5.70 mm1.73 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG701503478
Side View
Table 60.0%Crown 28.8°Girdle: MediumPavilion 41°Culet: LargeDepth 66.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 27
Current: £1,344 GBP|Low: £170 GBP|High: £1,389 GBP|Avg: £487 GBP|-3.2%
Brilliant Earth
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
Retailer 15
Retailer 16
October 29, 2026
Retailer 14£177 GBP
Retailer 8£180 GBP
Retailer 5£199 GBP
Retailer 4£206 GBP
Retailer 3£220 GBP
Retailer 15£220 GBP
Retailer 13£297 GBP
Retailer 9£398 GBP
Retailer 6£415 GBP
Retailer 2£416 GBP
Retailer 12£561 GBP
Retailer 16£707 GBP
Retailer 7£747 GBP
Retailer 11£830 GBP
Retailer 10£883 GBP
Brilliant Earth£1,344 GBP

42 data points across 16 retailers

15 retailers£177 GBP to £1,344 GBP

A
Cheapest Retailer
-
£177 GBP
$236 USD
A
Retailer 2
-
£199 GBP
$265 USD
View
Final sale: no returns
A
Retailer 3
-
£206 GBP
$274 USD
View
A
Retailer 4
-
£220 GBP
$293 USD
View
A
Retailer 5
-
£220 GBP
$293 USD
View
B+
Retailer 6
-
£297 GBP
$395 USD
View
B+
Retailer 7
-
£398 GBP
€505 EUR
View
B+
Retailer 8
-
£415 GBP
$553 USD
View
A
Retailer 9
-
£416 GBP
View
B
Retailer 10
-
£561 GBP
$747 USD
View
B
Retailer 11
-
£707 GBP
$942 USD
View
B
Retailer 12
-
£747 GBP
$995 USD
View
B
Retailer 13
-
£830 GBP
$1,105 USD
View
Price last confirmed 11 days ago
B
Retailer 14
-
£883 GBP
View
Most Expensive
B
Brilliant Earth
21312106A · Oct 29
£1,344 GBP
$1,790 USD
View
14 more retailers have this diamond
Prices start from £177 GBPSave up to £1,167 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
1.73ct Emerald
£177 GBP