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Marquise|Lab Grown|IGI

1.73ct E VVS1 Marquise Lab Grown Diamond

EX • E/VVS1 • IGI LG797658833

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG797658833

Diamond specifications and retailer prices

From £232 GBP
$311 USD
As of October 30, 2026
Save £807 GBP (78%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,321 GBP at Rare Carat · As of October 4, 2026
View at Rare Carat

About this 1.73ct lab-grown marquise diamond

This 1.73ct lab-grown marquise sits in the one-and-a-half to two carat band, graded E colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG797658833 or 797658833. Listed at 15 retailers as of October 29, 2026, with a 348% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.73
Carat
E
Colour
VVS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG797658833
Dimensions12.87 × 6.18 × 3.79 mm
L/W Ratio2.08
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.87 mm6.18 mm1.73 ctE / VVS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG797658833
Side View
Table 59.0%Crown 34.4°Girdle: MED-STKPavilion 39.8°Culet: NoneDepth 61.3%

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: £1,321 GBP|Low: £232 GBP|High: £1,321 GBP|Avg: £643 GBP|+4.9%
Rare Carat
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
October 30, 2026
Retailer 15£232 GBP
Retailer 2£274 GBP
Retailer 12£377 GBP
Retailer 3£426 GBP
Retailer 11£443 GBP
Retailer 8£455 GBP
Retailer 7£476 GBP
Retailer 4£516 GBP
Retailer 5£593 GBP
Retailer 10£600 GBP
Retailer 13£793 GBP
Retailer 6£867 GBP
Retailer 14£992 GBP
Retailer 9£1,039 GBP
Rare Carat£1,321 GBP

41 data points across 15 retailers

15 retailers£232 GBP to £1,039 GBP

A
Cheapest Retailer
-
£232 GBP
$311 USD
Final sale: no returns
Retailer 2
-
£254 GBP
$341 USD
View
Price last confirmed 35 days ago
A
Retailer 3
-
£274 GBP
View
A
Retailer 4
-
£377 GBP
$505 USD
View
A
Retailer 5
-
£426 GBP
$571 USD
View
A
Retailer 6
-
£443 GBP
ZAR 9,594 ZAR
View
A
Retailer 7
-
£455 GBP
View
A
Retailer 8
-
£516 GBP
$691 USD
View
A
Retailer 9
-
£593 GBP
$794 USD
View
A
Retailer 10
-
£600 GBP
A$1,236 AUD
View
B+
Retailer 11
-
£793 GBP
$1,062 USD
View
B+
Retailer 12
-
£867 GBP
$1,162 USD
View
B+
Retailer 13
-
£992 GBP
$1,329 USD
View
B+
Retailer 14
-
£1,039 GBP
View
Most Expensive
Rare Carat
ITU-ITUS-J1008 · Oct 4
£1,321 GBP
$1,770 USD
View
Price last confirmed 26 days ago
14 more retailers have this diamond
Prices start from £232 GBPSave up to £807 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 Marquise
£232 GBP