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Marquise|Lab Grown|IGI

1.56ct D VS1 Marquise Lab Grown Diamond

ID • D/VS1 • IGI LG817639351

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG817639351

Diamond specifications and retailer prices

From £205 GBP
$275 USD
As of October 30, 2026
Save £854 GBP (81%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £1,059 GBP at With Clarity · As of October 31, 2026
View at With Clarity

About this 1.56ct lab-grown marquise diamond

This 1.56ct lab-grown marquise sits in the one-and-a-half to two carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG817639351 or 817639351. Listed at 22 retailers as of October 30, 2026, with prices from £205 to £1,059, a £854 spread on the same certified stone. With Clarity lists it at £1,059. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.56
Carat
D
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG817639351
Dimensions11.66 × 6.17 × 3.77 mm
L/W Ratio1.89
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.66 mm6.17 mm1.56 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG817639351
Side View
Table 60.0%Crown 35°Girdle: MED-STKPavilion 40.1°Culet: NoneDepth 61.1%

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: Oct 30
Current: £1,021 GBP|Low: £197 GBP|High: £1,097 GBP|Avg: £622 GBP|-1.1%
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
Retailer 15
Retailer 16
November 1, 2026
Retailer 3£205 GBP
Retailer 4£254 GBP
Retailer 5£254 GBP
Retailer 15£343 GBP
Retailer 13£373 GBP
Retailer 14£433 GBP
Retailer 12£438 GBP
Retailer 9£448 GBP
Retailer 8£508 GBP
Retailer 11£592 GBP
Retailer 16£783 GBP
Retailer 10£881 GBP
Retailer 2£908 GBP
Retailer 7£990 GBP
Retailer 1£1,021 GBP
Retailer 6£1,033 GBP

40 data points across 16 retailers

22 retailers£205 GBP to £1,059 GBP

A
Cheapest Retailer
-
£205 GBP
$275 USD
A
Retailer 2
-
£230 GBP
$308 USD
View
Final sale: no returns
Retailer 3
-
£252 GBP
$337 USD
View
Price last confirmed 34 days ago
Retailer 4
-
£254 GBP
$341 USD
View
Price last confirmed 7 days ago
A
Retailer 5
-
£254 GBP
$341 USD
View
B+
Retailer 6
-
£343 GBP
$460 USD
View
A
Retailer 7
-
£373 GBP
$500 USD
View
A
Retailer 8
-
£422 GBP
$566 USD
View
A
Retailer 9
-
£433 GBP
€552 EUR
View
A
Retailer 10
-
£438 GBP
ZAR 9,475 ZAR
View
A
Retailer 11
-
£448 GBP
View
B+
Retailer 12
-
£508 GBP
$680 USD
View
B+
Retailer 13
-
£592 GBP
A$1,221 AUD
View
B
Retailer 14
-
£783 GBP
$1,049 USD
View
B
Retailer 15
-
£857 GBP
$1,148 USD
View
B
Retailer 16
-
£881 GBP
$1,180 USD
View
B
Retailer 17
-
£908 GBP
$1,216 USD
View
Retailer 18
-
£968 GBP
$1,297 USD
View
Price last confirmed 17 days ago
B
Retailer 19
-
£990 GBP
View
B
Retailer 20
-
£1,021 GBP
View
Retailer 21
-
£1,033 GBP
SGD 1,870 SGD
View
Price last confirmed 20 days ago
Most Expensive
B
With Clarity
817639351 · Oct 31
£1,059 GBP
$1,419 USD
View
21 more retailers have this diamond
Prices start from £205 GBPSave up to £854 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
1.56ct Marquise
£205 GBP