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Marquise|Lab Grown|IGI

1.56ct F VS1 Marquise Lab Grown Diamond

VG • F/VS1 • IGI LG825654517

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG825654517

Diamond specifications and retailer prices

From £189 GBP
$253 USD
As of November 2, 2026
Save £783 GBP (81%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £972 GBP at With Clarity · As of November 1, 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 F colour (colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG825654517 or 825654517. Listed at 19 retailers as of November 1, 2026, with prices from £189 to £972, a £783 spread on the same certified stone. With Clarity lists it at £972. 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

1.56
Carat
F
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.2°
Pavilion angle39.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG825654517
Dimensions12.74 × 6.09 × 3.60 mm
L/W Ratio2.09
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.74 mm6.09 mm1.56 ctF / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG825654517
Side View
Table 59.0%Crown 31.2°Girdle: MED-STKPavilion 39.1°Culet: NoneDepth 59.1%

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 2
Current: £604 GBP|Low: £189 GBP|High: £972 GBP|Avg: £504 GBP|-8.7%
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
Retailer 17
With Clarity
November 2, 2026
Retailer 4£189 GBP
Retailer 5£211 GBP
Retailer 16£234 GBP
Retailer 17£234 GBP
Retailer 10£273 GBP
Retailer 6£314 GBP
Retailer 9£354 GBP
Retailer 12£404 GBP
Retailer 2£411 GBP
Retailer 11£442 GBP
Retailer 15£545 GBP
Retailer 1£604 GBP
Retailer 14£709 GBP
Retailer 7£754 GBP
Retailer 3£790 GBP
Retailer 8£920 GBP
Retailer 13£937 GBP
With Clarity£972 GBP

29 data points across 18 retailers

19 retailers£189 GBP to £972 GBP

A
Cheapest Retailer
-
£189 GBP
$253 USD
A
Retailer 2
-
£211 GBP
$283 USD
View
Final sale: no returns
Retailer 3
-
£234 GBP
$314 USD
View
Price last confirmed 8 days ago
A
Retailer 4
-
£234 GBP
$314 USD
View
A
Retailer 5
-
£273 GBP
View
B+
Retailer 6
-
£314 GBP
$422 USD
View
A
Retailer 7
-
£354 GBP
$475 USD
View
A
Retailer 8
-
£404 GBP
ZAR 8,748 ZAR
View
A
Retailer 9
-
£411 GBP
$552 USD
View
A
Retailer 10
-
£442 GBP
View
A
Retailer 11
-
£545 GBP
A$1,125 AUD
View
B+
Retailer 12
-
£604 GBP
$811 USD
View
B+
Retailer 13
-
£709 GBP
A$1,463 AUD
View
Retailer 14
-
£745 GBP
$1,000 USD
View
Price last confirmed 29 days ago
B+
Retailer 15
-
£754 GBP
SGD 1,367 SGD
View
B
Retailer 16
-
£790 GBP
$1,060 USD
View
B
Retailer 17
-
£920 GBP
$1,234 USD
View
B
Retailer 18
-
£937 GBP
View
Most Expensive
B
With Clarity
825654517 · Nov 1
£972 GBP
$1,304 USD
View
18 more retailers have this diamond
Prices start from £189 GBPSave up to £783 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
£189 GBP