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Marquise|Lab Grown|IGI

1.70ct G VS1 Marquise Lab Grown Diamond

EX • G/VS1 • IGI LG844660548

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG844660548

Diamond specifications and retailer prices

From £184 GBP
$247 USD
As of November 1, 2026
Save £904 GBP (83%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £1,088 GBP at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 1.7ct lab-grown marquise diamond

This 1.7ct lab-grown marquise sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG844660548 or 844660548. Listed at 3 retailers as of November 1, 2026, with prices from £184 to £1,088, a £904 spread on the same certified stone. Brilliant Earth lists it at £1,088. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.70
Carat
G
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG844660548
Dimensions11.73 × 6.25 × 4.04 mm
L/W Ratio1.88
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.73 mm6.25 mm1.70 ctG / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG844660548
Side View
Table 62.0%Crown 35.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 64.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: £1,088 GBP|Low: £184 GBP|High: £1,550 GBP|Avg: £685 GBP|-29.8%
Brilliant Earth
Retailer 2
Retailer 3
November 2, 2026
Retailer 3£184 GBP
Retailer 2£388 GBP
Brilliant Earth£1,088 GBP

19 data points across 3 retailers

3 retailers£184 GBP to £1,088 GBP

A
Cheapest Retailer
-
£184 GBP
$247 USD
Final sale: no returns
A
Retailer 2
-
£388 GBP
View
Most Expensive
B
Brilliant Earth
22003089A · Nov 2
£1,088 GBP
$1,460 USD
View
2 more retailers have this diamond
Prices start from £184 GBPSave up to £904 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
1.70ct Marquise
£184 GBP