CaratHunter
Plans
Marquise|Lab Grown|IGI

1.56ct D VS1 Marquise Lab Grown Diamond

ID • D/VS1 • IGI LG837656503

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG837656503

Diamond specifications and retailer prices

From £225 GBP
$302 USD
As of November 1, 2026
Save £1,051 GBP (82%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £1,276 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

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 LG837656503 or 837656503. Listed at 23 retailers as of October 30, 2026, with prices from £225 to £1,276, a £1,051 spread on the same certified stone. Brilliant Earth lists it at £1,276. 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 angle35.4°
Pavilion angle39.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG837656503
Dimensions11.71 × 6.17 × 3.71 mm
L/W Ratio1.90
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.71 mm6.17 mm1.56 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG837656503
Side View
Table 63.0%Crown 35.4°Girdle: MED-STKPavilion 39.6°Culet: NoneDepth 60.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £1,276 GBP|Low: £225 GBP|High: £1,657 GBP|Avg: £590 GBP|-23.0%
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 1, 2026
Retailer 9£225 GBP
Retailer 10£235 GBP
Retailer 5£251 GBP
Retailer 11£279 GBP
Retailer 14£334 GBP
Retailer 17£369 GBP
Retailer 8£422 GBP
Retailer 15£431 GBP
Retailer 12£441 GBP
Retailer 18£443 GBP
Retailer 16£584 GBP
Retailer 13£594 GBP
Retailer 7£807 GBP
Retailer 4£822 GBP
Retailer 3£851 GBP
Retailer 6£966 GBP
Retailer 2£1,006 GBP
Brilliant Earth£1,276 GBP

34 data points across 18 retailers

23 retailers£225 GBP to £1,276 GBP

Retailer 1
-
£202 GBP
$271 USD
Price last confirmed 13 days ago
A
Retailer 2
-
£225 GBP
$302 USD
View
Final sale: no returns
Retailer 3
-
£235 GBP
$315 USD
View
Price last confirmed 11 days ago
Retailer 4
-
£251 GBP
$336 USD
View
Price last confirmed 16 days ago
Retailer 5
-
£251 GBP
$336 USD
View
Price last confirmed 13 days ago
A
Retailer 6
-
£279 GBP
View
B+
Retailer 7
-
£334 GBP
$448 USD
View
A
Retailer 8
-
£369 GBP
$495 USD
View
A
Retailer 9
-
£422 GBP
$565 USD
View
A
Retailer 10
-
£431 GBP
ZAR 9,332 ZAR
View
A
Retailer 11
-
£441 GBP
View
A
Retailer 12
-
£443 GBP
€565 EUR
View
B+
Retailer 13
-
£584 GBP
A$1,203 AUD
View
B+
Retailer 14
-
£594 GBP
$796 USD
View
Retailer 15
-
£807 GBP
$1,081 USD
View
Price last confirmed 13 days ago
Retailer 16
-
£822 GBP
A$1,694 AUD
View
Price last confirmed 7 days ago
B
Retailer 17
-
£845 GBP
$1,132 USD
View
B
Retailer 18
-
£851 GBP
$1,140 USD
View
B
Retailer 19
-
£966 GBP
$1,294 USD
View
B
Retailer 20
-
£1,006 GBP
View
B
Retailer 21
-
£1,029 GBP
$1,379 USD
View
B
Retailer 22
-
£1,060 GBP
$1,421 USD
View
Most Expensive
B
Brilliant Earth
21658637A · Oct 30
£1,276 GBP
$1,710 USD
View
22 more retailers have this diamond
Prices start from £225 GBPSave up to £1,051 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
£225 GBP