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Cushion|Lab Grown|IGI

1.73ct H VVS2 Cushion Lab Grown Diamond

ID • H/VVS2 • IGI LG620421291

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG620421291

Diamond specifications and retailer prices

From £203 GBP
$272 USD
As of October 30, 2026
Save £760 GBP (79%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £963 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.73ct lab-grown cushion diamond

This 1.73ct lab-grown cushion sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and VVS2 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG620421291 or 620421291. Listed at 12 retailers as of October 30, 2026, with prices from £203 to £963, a £760 spread on the same certified stone. Brilliant Earth lists it at £963. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.73
Carat
H
Colour
VVS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle39.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG620421291
Dimensions8.23 × 6.42 × 4.35 mm
L/W Ratio1.28
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
8.23 mm6.42 mm1.73 ctH / VVS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG620421291
Side View
Table 58.0%Crown 34°Girdle: STK-THKPavilion 39.2°Culet: NoneDepth 67.8%

Caratlytics Score

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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 30
Current: £963 GBP|Low: £198 GBP|High: £1,037 GBP|Avg: £503 GBP|-7.2%
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
October 31, 2026
Retailer 13£203 GBP
Retailer 6£270 GBP
Retailer 11£302 GBP
Retailer 5£355 GBP
Retailer 7£386 GBP
Retailer 2£404 GBP
Retailer 12£419 GBP
Retailer 3£470 GBP
Retailer 8£524 GBP
Retailer 10£562 GBP
Retailer 4£762 GBP
Retailer 9£902 GBP
Brilliant Earth£963 GBP

39 data points across 13 retailers

12 retailers£203 GBP to £963 GBP

A
Cheapest Retailer
-
£203 GBP
$272 USD
Final sale: no returns
A
Retailer 2
-
£270 GBP
View
B+
Retailer 3
-
£302 GBP
$405 USD
View
A
Retailer 4
-
£386 GBP
ZAR 8,364 ZAR
View
A
Retailer 5
-
£404 GBP
€515 EUR
View
A
Retailer 6
-
£419 GBP
$561 USD
View
A
Retailer 7
-
£470 GBP
$630 USD
View
A
Retailer 8
-
£524 GBP
A$1,081 AUD
View
B+
Retailer 9
-
£562 GBP
$753 USD
View
B+
Retailer 10
-
£762 GBP
$1,021 USD
View
B+
Retailer 11
-
£902 GBP
View
Most Expensive
B+
Brilliant Earth
11234971A · Oct 30
£963 GBP
$1,290 USD
View
11 more retailers have this diamond
Prices start from £203 GBPSave up to £760 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 Cushion
£203 GBP