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Marquise|Lab Grown|IGI

1.05ct G VS1 Marquise Lab Grown Diamond

VG • G/VS1 • IGI LG831680175

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG831680175

Diamond specifications and retailer prices

From £144 GBP
$193 USD
As of November 1, 2026
Save £410 GBP (74%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £554 GBP at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 1.05ct lab-grown marquise diamond

This 1.05ct lab-grown marquise sits in the classic one-carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG831680175 or 831680175. Listed at 14 retailers as of October 31, 2026, with prices from £144 to £554, a £410 spread on the same certified stone. Taylor and Hart lists it at £554. 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

1.05
Carat
G
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831680175
Dimensions10.55 × 5.27 × 3.33 mm
L/W Ratio2.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.55 mm5.27 mm1.05 ctG / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831680175
Side View
Table 59.0%Crown 34.4°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 63.2%

Caratlytics Score

How it works →
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: £542 GBP|Low: £144 GBP|High: £594 GBP|Avg: £355 GBP|-2.5%
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
Taylor and Hart
November 2, 2026
Retailer 2£144 GBP
Retailer 11£159 GBP
Retailer 6£195 GBP
Retailer 13£256 GBP
Retailer 9£275 GBP
Retailer 7£283 GBP
Retailer 4£285 GBP
Retailer 8£389 GBP
Retailer 10£399 GBP
Retailer 3£437 GBP
Retailer 5£525 GBP
Retailer 1£542 GBP
Retailer 12£551 GBP
Taylor and Hart£554 GBP

5 data points across 14 retailers

14 retailers£144 GBP to £554 GBP

A
Cheapest Retailer
-
£144 GBP
$193 USD
Final sale: no returns
A
Retailer 2
-
£159 GBP
$214 USD
View
A
Retailer 3
-
£195 GBP
View
A
Retailer 4
-
£256 GBP
$344 USD
View
A
Retailer 5
-
£275 GBP
ZAR 5,972 ZAR
View
A
Retailer 6
-
£283 GBP
View
A
Retailer 7
-
£285 GBP
$382 USD
View
B+
Retailer 8
-
£389 GBP
A$803 AUD
View
B+
Retailer 9
-
£399 GBP
$535 USD
View
B+
Retailer 10
-
£437 GBP
SGD 792 SGD
View
B
Retailer 11
-
£525 GBP
$705 USD
View
B
Retailer 12
-
£542 GBP
$727 USD
View
B
Retailer 13
-
£551 GBP
$740 USD
View
Most Expensive
B
Taylor and Hart
A412U4P · Oct 31
£554 GBP
$743 USD
View
13 more retailers have this diamond
Prices start from £144 GBPSave up to £410 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
1.05ct Marquise
£144 GBP