Marquise|Lab Grown|IGI

1.56ct D VS1 Marquise Lab Grown Diamond

ID • D/VS1 • IGI LG821630368

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG821630368

Diamond specifications and retailer prices

From £244 GBP
$327 USD
As of October 25, 2026
Save £765 GBP (76%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £1,042 GBP at Reve Diamonds · As of October 25, 2026
View at Reve Diamonds

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 LG821630368 or 821630368. Listed at 23 retailers as of October 25, 2026, with a 313% 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

1.56
Carat
D
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle38.2°
Pavilion angle39.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG821630368
Dimensions11.50 × 6.02 × 3.83 mm
L/W Ratio1.91
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.50 mm6.02 mm1.56 ctD / VS1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateIGI LG821630368
Side View
Table 59.0%Crown 38.2°Girdle: MED-STKPavilion 39.4°Culet: NoneDepth 63.6%

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: Oct 25
Current: £431 GBP|Low: £189 GBP|High: £1,142 GBP|Avg: £586 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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
Retailer 23
Reve Diamonds
October 30, 2026
Retailer 6£197 GBP
Retailer 5£219 GBP
Retailer 3£228 GBP
Retailer 11£244 GBP
Retailer 7£267 GBP
Retailer 18£272 GBP
Retailer 17£362 GBP
Retailer 20£386 GBP
Retailer 2£406 GBP
Retailer 22£412 GBP
Retailer 1£431 GBP
Retailer 10£441 GBP
Retailer 19£464 GBP
Retailer 23£617 GBP
Retailer 8£784 GBP
Retailer 13£785 GBP
Retailer 14£822 GBP
Retailer 9£851 GBP
Retailer 12£881 GBP
Retailer 16£955 GBP
Retailer 4£959 GBP
Retailer 21£978 GBP
Retailer 15£1,019 GBP
Reve Diamonds£1,042 GBP

35 data points across 24 retailers

23 retailers£244 GBP to £1,009 GBP

Retailer 1
-
£197 GBP
$264 USD
Price last confirmed 9 days ago
Retailer 2
-
£228 GBP
$306 USD
View
Price last confirmed 8 days ago
A
Retailer 3
-
£244 GBP
$327 USD
View
A
Retailer 4
-
£267 GBP
HK$2,800 HKD
View
A
Retailer 5
-
£272 GBP
View
A
Retailer 6
-
£362 GBP
$485 USD
View
A
Retailer 7
-
£386 GBP
€493 EUR
View
A
Retailer 8
-
£406 GBP
$544 USD
View
Retailer 9
-
£412 GBP
ZAR 8,927 ZAR
View
Price last confirmed 9 days ago
A
Retailer 10
-
£431 GBP
$577 USD
View
A
Retailer 11
-
£441 GBP
$591 USD
View
A
Retailer 12
-
£464 GBP
View
B+
Retailer 13
-
£617 GBP
$827 USD
View
Retailer 14
-
£784 GBP
$1,050 USD
View
Price last confirmed 7 days ago
B+
Retailer 15
-
£785 GBP
SGD 1,422 SGD
View
B
Retailer 16
-
£822 GBP
$1,102 USD
View
B
Retailer 17
-
£851 GBP
$1,140 USD
View
B
Retailer 18
-
£881 GBP
$1,180 USD
View
B
Retailer 19
-
£955 GBP
View
B
Retailer 20
-
£959 GBP
$1,285 USD
View
B
Retailer 21
-
£978 GBP
View
B
Retailer 22
-
£1,009 GBP
$1,352 USD
View
Most Expensive
Reve Diamonds
01A701016 · Oct 25
£1,042 GBP
$1,396 USD
View
Price last confirmed 7 days ago
22 more retailers have this diamond
Prices start from £244 GBPSave up to £765 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
£244 GBP