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Round|Lab Grown|IGI

1.73ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG632499250

Shape and cutting style on the report: Round brilliant

Certificate IGI LG632499250

Diamond specifications and retailer prices

From £154 GBP
$205 USD
As of October 29, 2026
Save £1,498 GBP (91%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £1,652 GBP at Jared · As of October 28, 2026
View at Jared

About this 1.73ct lab-grown round diamond

This 1.73ct lab-grown round 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 LG632499250 or 632499250. Listed at 11 retailers as of October 28, 2026, with prices from £154 to £1,652, a £1,498 spread on the same certified stone. Jared lists it at £1,652. 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 angle33.9°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG632499250
Dimensions7.70 × 7.75 × 4.70 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
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
7.70 mm7.75 mm1.73 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG632499250
Side View
Table 59.0%Crown 33.9°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 60.9%

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 29
Current: £366 GBP|Low: £129 GBP|High: £1,532 GBP|Avg: £588 GBP|-1.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 29, 2026
Retailer 12£154 GBP
Retailer 13£174 GBP
Retailer 11£179 GBP
Retailer 10£330 GBP
Retailer 1£366 GBP
Retailer 4£410 GBP
Retailer 5£455 GBP
Retailer 3£475 GBP
Retailer 7£617 GBP
Retailer 8£678 GBP
Retailer 6£846 GBP
Retailer 2£1,096 GBP
Retailer 9£1,479 GBP

35 data points across 13 retailers

11 retailers£154 GBP to £1,652 GBP

A
Cheapest Retailer
-
£154 GBP
$205 USD
A
Retailer 2
-
£174 GBP
$232 USD
View
Final sale: no returns
A
Retailer 3
-
£179 GBP
$238 USD
View
B+
Retailer 4
-
£330 GBP
$439 USD
View
A
Retailer 5
-
£366 GBP
View
B+
Retailer 6
-
£617 GBP
$821 USD
View
B+
Retailer 7
-
£678 GBP
$903 USD
View
B
Retailer 8
-
£846 GBP
View
B
Retailer 9
-
£1,096 GBP
$1,460 USD
View
B
Retailer 10
-
£1,479 GBP
$1,970 USD
View
Most Expensive
B
Jared
151375966 · Oct 28
£1,652 GBP
$2,200 USD
View
10 more retailers have this diamond
Prices start from £154 GBPSave up to £1,498 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 Round
£154 GBP