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Marquise|Lab Grown|IGI

1.60ct G VVS1 Marquise Lab Grown Diamond

ID • G/VVS1 • IGI LG818663631

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG818663631

Diamond specifications and retailer prices

From £232 GBP
$312 USD
As of November 1, 2026
Save £956 GBP (80%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £1,639 GBP at Brilliant Earth · As of September 28, 2026
View at Brilliant Earth

About this 1.6ct lab-grown marquise diamond

This 1.6ct lab-grown marquise sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG818663631 or 818663631. Listed at 22 retailers as of November 1, 2026, with a 411% 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

1.60
Carat
G
Colour
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.6°
Pavilion angle42.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818663631
Dimensions11.83 × 6.08 × 3.96 mm
L/W Ratio1.95
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.83 mm6.08 mm1.60 ctG / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818663631
Side View
Table 61.0%Crown 33.6°Girdle: MED-THKPavilion 42.3°Culet: NoneDepth 65.1%

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: Nov 1
Current: £451 GBP|Low: £232 GBP|High: £1,078 GBP|Avg: £570 GBP|+2.3%
Retailer 1
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
November 2, 2026
Retailer 5£232 GBP
Retailer 14£275 GBP
Retailer 11£347 GBP
Retailer 9£384 GBP
Retailer 13£406 GBP
Retailer 7£445 GBP
Retailer 1£451 GBP
Retailer 4£536 GBP
Retailer 2£546 GBP
Retailer 12£600 GBP
Retailer 10£620 GBP
Retailer 3£993 GBP
Retailer 8£1,034 GBP
Retailer 6£1,078 GBP

42 data points across 14 retailers

22 retailers£232 GBP to £1,189 GBP

Retailer 1
-
£208 GBP
$279 USD
Price last confirmed 25 days ago
A
Retailer 2
-
£232 GBP
$312 USD
View
Final sale: no returns
Retailer 3
-
£241 GBP
$324 USD
View
Price last confirmed 34 days ago
Retailer 4
-
£258 GBP
$346 USD
View
Price last confirmed 30 days ago
Retailer 5
-
£258 GBP
$346 USD
View
Price last confirmed 25 days ago
B+
Retailer 6
-
£347 GBP
$465 USD
View
A
Retailer 7
-
£384 GBP
$515 USD
View
A
Retailer 8
-
£406 GBP
€519 EUR
View
A
Retailer 9
-
£445 GBP
ZAR 9,644 ZAR
View
A
Retailer 10
-
£451 GBP
View
A
Retailer 11
-
£536 GBP
$719 USD
View
Retailer 12
-
£546 GBP
$732 USD
View
Price last confirmed 9 days ago
B+
Retailer 13
-
£600 GBP
A$1,239 AUD
View
B+
Retailer 14
-
£620 GBP
$832 USD
View
Retailer 15
-
£829 GBP
$1,113 USD
View
Price last confirmed 33 days ago
B+
Retailer 16
-
£867 GBP
$1,164 USD
View
B
Retailer 17
-
£993 GBP
$1,332 USD
View
B
Retailer 18
-
£1,034 GBP
View
B
Retailer 19
-
£1,075 GBP
$1,442 USD
View
B
Retailer 20
-
£1,078 GBP
$1,446 USD
View
B
Retailer 21
-
£1,189 GBP
$1,595 USD
View
Most Expensive
Brilliant Earth
21035738A · Sep 28
£1,639 GBP
$2,200 USD
View
Price last confirmed 35 days ago
21 more retailers have this diamond
Prices start from £232 GBPSave up to £956 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
1.60ct Marquise
£232 GBP