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Radiant|Lab Grown|IGI

1.73ct G VVS2 Radiant Lab Grown Diamond

ID • G/VVS2 • IGI LG645423221

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG645423221

Diamond specifications and retailer prices

From £155 GBP
$208 USD
As of October 30, 2026
Save £1,449 GBP (90%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £1,605 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.73ct lab-grown radiant diamond

This 1.73ct lab-grown radiant sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and VVS2 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG645423221 or 645423221. Listed at 23 retailers as of October 30, 2026, with prices from £155 to £1,605, a £1,449 spread on the same certified stone. Brilliant Earth lists it at £1,605. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.73
Carat
G
Colour
VVS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46.7°
Pavilion angle38.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG645423221
Dimensions7.98 × 5.87 × 4.27 mm
L/W Ratio1.36
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.98 mm5.87 mm1.73 ctG / VVS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG645423221
Side View
Table 72.0%Crown 46.7°Girdle: Slightly ThickPavilion 38.3°Culet: NoneDepth 72.7%

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: £1,605 GBP|Low: £151 GBP|High: £1,694 GBP|Avg: £549 GBP|+52.5%
Brilliant Earth
Retailer 2
Retailer 3
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Retailer 12
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Retailer 20
November 1, 2026
Retailer 4£155 GBP
Retailer 3£173 GBP
Retailer 17£180 GBP
Retailer 7£193 GBP
Retailer 11£193 GBP
Retailer 9£287 GBP
Retailer 13£342 GBP
Retailer 15£365 GBP
Retailer 6£390 GBP
Retailer 2£394 GBP
Retailer 16£496 GBP
Retailer 18£558 GBP
Retailer 5£684 GBP
Retailer 14£784 GBP
Retailer 12£811 GBP
Retailer 20£836 GBP
Retailer 19£857 GBP
Retailer 10£910 GBP
Retailer 8£1,493 GBP
Brilliant Earth£1,605 GBP

37 data points across 20 retailers

23 retailers£155 GBP to £1,605 GBP

A
Cheapest Retailer
-
£155 GBP
$208 USD
A
Retailer 2
-
£173 GBP
$232 USD
View
Final sale: no returns
A
Retailer 3
-
£180 GBP
$241 USD
View
A
Retailer 4
-
£193 GBP
$258 USD
View
A
Retailer 5
-
£193 GBP
$258 USD
View
B+
Retailer 6
-
£287 GBP
$385 USD
View
A
Retailer 7
-
£342 GBP
€437 EUR
View
A
Retailer 8
-
£365 GBP
ZAR 7,905 ZAR
View
A
Retailer 9
-
£369 GBP
$494 USD
View
A
Retailer 10
-
£390 GBP
$522 USD
View
A
Retailer 11
-
£394 GBP
View
A
Retailer 12
-
£496 GBP
A$1,023 AUD
View
Retailer 13
-
£510 GBP
$684 USD
View
Price last confirmed 17 days ago
B+
Retailer 14
-
£558 GBP
$747 USD
View
B+
Retailer 15
-
£684 GBP
$916 USD
View
B+
Retailer 16
-
£784 GBP
$1,050 USD
View
B+
Retailer 17
-
£811 GBP
$1,087 USD
View
Retailer 18
-
£815 GBP
$1,093 USD
View
Price last confirmed 52 days ago
B+
Retailer 19
-
£836 GBP
$1,120 USD
View
B+
Retailer 20
-
£857 GBP
View
B
Retailer 21
-
£910 GBP
$1,219 USD
View
B
Retailer 22
-
£1,493 GBP
$2,000 USD
View
Most Expensive
B
Brilliant Earth
16302039A · Oct 31
£1,605 GBP
$2,150 USD
View
22 more retailers have this diamond
Prices start from £155 GBPSave up to £1,449 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 Radiant
£155 GBP