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Marquise|Lab Grown|IGI

1.57ct D IF Marquise Lab Grown Diamond

ID • D/IF • IGI LG728561101

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG728561101

Diamond specifications and retailer prices

From £437 GBP
$585 USD
As of October 30, 2026
Save £3,444 GBP (89%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £3,881 GBP at Do Amore Diamonds · As of November 1, 2026
View at Do Amore Diamonds

About this 1.57ct lab-grown marquise diamond

This 1.57ct lab-grown marquise sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG728561101 or 728561101. Listed at 18 retailers as of October 30, 2026, with prices from £437 to £3,881, a £3,444 spread on the same certified stone. Do Amore Diamonds lists it at £3,881. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.57
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.6°
Pavilion angle38.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG728561101
Dimensions11.65 × 6.22 × 3.70 mm
L/W Ratio1.87
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
11.65 mm6.22 mm1.57 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG728561101
Side View
Table 60.0%Crown 33.6°Girdle: MED-THKPavilion 38.5°Culet: NoneDepth 59.5%

Caratlytics Score

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A+
Exceptional
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 30
Current: £3,881 GBP|Low: £428 GBP|High: £4,359 GBP|Avg: £1,479 GBP|-11.0%
Do Amore Diamonds
Retailer 2
Retailer 3
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Retailer 7
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Retailer 10
Retailer 11
Retailer 12
Retailer 13
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Retailer 18
November 1, 2026
Retailer 15£437 GBP
Retailer 5£490 GBP
Retailer 10£558 GBP
Retailer 7£631 GBP
Retailer 17£634 GBP
Retailer 8£696 GBP
Retailer 16£832 GBP
Retailer 14£931 GBP
Retailer 9£998 GBP
Retailer 18£1,344 GBP
Retailer 12£1,393 GBP
Retailer 4£1,517 GBP
Retailer 3£1,573 GBP
Retailer 6£2,019 GBP
Retailer 13£2,090 GBP
Retailer 2£2,356 GBP
Retailer 11£2,647 GBP
Do Amore Diamonds£3,881 GBP

33 data points across 18 retailers

18 retailers£437 GBP to £3,881 GBP

A+
Cheapest Retailer
-
£437 GBP
$585 USD
A
Retailer 2
-
£490 GBP
$656 USD
View
A
Retailer 3
-
£558 GBP
$748 USD
View
Final sale: no returns
A
Retailer 4
-
£631 GBP
$845 USD
View
A
Retailer 5
-
£634 GBP
$850 USD
View
A
Retailer 6
-
£696 GBP
$932 USD
View
A
Retailer 7
-
£832 GBP
$1,115 USD
View
A
Retailer 8
-
£931 GBP
€1,188 EUR
View
A
Retailer 9
-
£998 GBP
A$2,058 AUD
View
B+
Retailer 10
-
£1,344 GBP
$1,801 USD
View
B+
Retailer 11
-
£1,393 GBP
A$2,871 AUD
View
B+
Retailer 12
-
£1,517 GBP
$2,032 USD
View
B+
Retailer 13
-
£1,573 GBP
$2,107 USD
View
B+
Retailer 14
-
£2,019 GBP
$2,705 USD
View
B+
Retailer 15
-
£2,090 GBP
$2,800 USD
View
B+
Retailer 16
-
£2,356 GBP
View
B
Retailer 17
-
£2,647 GBP
A$5,456 AUD
View
Most Expensive
B
Do Amore Diamonds
27-6045B7004 · Nov 1
£3,881 GBP
$5,200 USD
View
17 more retailers have this diamond
Prices start from £437 GBPSave up to £3,444 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+
1.57ct Marquise
£437 GBP