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Marquise|Lab Grown|IGI

1.77ct G VS1 Marquise Lab Grown Diamond

ID • G/VS1 • IGI LG818663851

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG818663851

Diamond specifications and retailer prices

From £1,157 GBP
$1,550 USD
As of October 31, 2026
14 retailers carry this diamond
Most expensive: £1,157 GBP at Brilliant Earth
View at Brilliant Earth

About this 1.77ct lab-grown marquise diamond

This 1.77ct 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 LG818663851 or 818663851. Listed at 14 retailers as of October 31, 2026. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.77
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.4°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818663851
Dimensions13.07 × 6.36 × 3.77 mm
L/W Ratio2.06
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
13.07 mm6.36 mm1.77 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818663851
Side View
Table 61.0%Crown 33.4°Girdle: THN-STKPavilion 39.8°Culet: NoneDepth 59.3%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 31
Current: £1,157 GBP|Low: £219 GBP|High: £1,179 GBP|Avg: £657 GBP
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
Retailer 14
October 10, 2026
Retailer 14£224 GBP
Retailer 12£413 GBP
Retailer 9£424 GBP
Retailer 8£464 GBP
Retailer 11£481 GBP
Retailer 2£571 GBP
Retailer 6£571 GBP
Retailer 7£697 GBP
Retailer 3£799 GBP
Retailer 4£837 GBP
Retailer 13£933 GBP
Retailer 5£947 GBP
Retailer 10£1,005 GBP
Brilliant Earth£1,157 GBP

21 data points across 14 retailers

14 retailers

Retailer 1
-
£200 GBP
$268 USD
Price last confirmed 24 days ago
Retailer 2
-
£230 GBP
$308 USD
View
Price last confirmed 33 days ago
Retailer 3
-
£249 GBP
$333 USD
View
Price last confirmed 24 days ago
Retailer 4
-
£249 GBP
$333 USD
View
Price last confirmed 29 days ago
Retailer 5
-
£413 GBP
$553 USD
View
Price last confirmed 23 days ago
Retailer 6
-
£424 GBP
ZAR 9,187 ZAR
View
Price last confirmed 23 days ago
Retailer 7
-
£697 GBP
$934 USD
View
Price last confirmed 22 days ago
Retailer 8
-
£799 GBP
$1,070 USD
View
Price last confirmed 27 days ago
Retailer 9
-
£799 GBP
SGD 1,446 SGD
View
Price last confirmed 24 days ago
Retailer 10
-
£837 GBP
$1,121 USD
View
Price last confirmed 24 days ago
Retailer 11
-
£933 GBP
$1,250 USD
View
Price last confirmed 25 days ago
Retailer 12
-
£947 GBP
$1,269 USD
View
Price last confirmed 25 days ago
Retailer 13
-
£1,005 GBP
View
Price last confirmed 24 days ago
Most Expensive
B
Brilliant Earth
21492510A · Oct 31
£1,157 GBP
$1,550 USD
View
13 more retailers have this diamond

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
1.77ct Marquise
£1,157 GBP