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Marquise|Lab Grown|IGI

1.73ct E VVS1 Marquise Lab Grown Diamond

VG • E/VVS1 • IGI LG800656364

Certificate IGI LG800656364

Diamond specifications and retailer prices

From £1,434 GBP
$1,922 USD
As of October 29, 2026
Save £521 GBP (27%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £1,955 GBP at Kay Jewelers · As of October 28, 2026
View at Kay Jewelers

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 very-good cut grade and certified by IGI LG800656364 or 800656364. Listed at 4 retailers as of October 28, 2026, with prices from £1,434 to £1,955, a £521 spread on the same certified stone. Kay Jewelers lists it at £1,955. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.73
Carat
E
Colour
VVS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG800656364
Dimensions12.89 × 6.35 × 3.88 mm
L/W Ratio2.03
Top View
12.89 mm6.35 mm1.73 ctE / VVS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG800656364
Side View
Table 58.0%CrownGirdle: THN-STKPavilionCulet: NoneDepth 61.1%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £1,955 GBP|Low: £1,434 GBP|High: £1,955 GBP|Avg: £1,735 GBP
Kay Jewelers
Retailer 2
Retailer 3
Retailer 4
September 28, 2026
Retailer 3£1,434 GBP
Retailer 2£1,455 GBP
Kay Jewelers£1,955 GBP
Retailer 4£1,955 GBP

2 data points across 4 retailers

4 retailers£1,434 GBP to £1,955 GBP

B
Cheapest Retailer
-
£1,434 GBP
$1,922 USD
B
Retailer 2
-
£1,455 GBP
$1,950 USD
View
B
Retailer 3
-
£1,955 GBP
$2,620 USD
View
Most Expensive
B
Kay Jewelers
259138707 · Oct 28
£1,955 GBP
$2,620 USD
View
3 more retailers have this diamond
Prices start from £1,434 GBPSave up to £521 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.

B
1.73ct Marquise
£1,434 GBP