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Marquise|Lab Grown|IGI

1.57ct D IF Marquise Lab Grown Diamond

EX • D/IF • IGI LG754507975

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG754507975

Diamond specifications and retailer prices

From £500 GBP
$670 USD
As of October 30, 2026
Save £4,129 GBP (89%) vs most expensive(unlock to see where)
34 retailers carry this diamond
Most expensive: £4,629 GBP at Diamond Quarter · As of October 31, 2026
View at Diamond Quarter

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 LG754507975 or 754507975. Listed at 34 retailers as of October 30, 2026, with prices from £500 to £4,629, a £4,129 spread on the same certified stone. Diamond Quarter lists it at £4,629. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.7°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754507975
Dimensions12.46 × 5.86 × 3.72 mm
L/W Ratio2.13
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
12.46 mm5.86 mm1.57 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754507975
Side View
Table 60.0%Crown 35.7°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 63.5%

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: £2,515 GBP|Low: £500 GBP|High: £4,500 GBP|Avg: £1,676 GBP|-2.6%
Retailer 1
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Retailer 24
November 1, 2026
Retailer 15£500 GBP
Retailer 4£631 GBP
Retailer 8£691 GBP
Retailer 17£694 GBP
Retailer 12£724 GBP
Retailer 2£763 GBP
Retailer 3£841 GBP
Retailer 24£966 GBP
Retailer 22£1,026 GBP
Retailer 18£1,028 GBP
Retailer 23£1,177 GBP
Retailer 7£1,482 GBP
Retailer 20£1,595 GBP
Retailer 14£1,634 GBP
Retailer 11£1,800 GBP
Retailer 10£1,979 GBP
Retailer 6£1,995 GBP
Retailer 16£2,019 GBP
Retailer 21£2,090 GBP
Retailer 9£2,291 GBP
Retailer 13£2,422 GBP
Retailer 1£2,515 GBP
Retailer 19£2,695 GBP
Retailer 5£4,441 GBP

32 data points across 24 retailers

34 retailers£500 GBP to £4,629 GBP

A
Cheapest Retailer
-
£500 GBP
$670 USD
Retailer 2
-
£507 GBP
$679 USD
View
Price last confirmed 24 days ago
Retailer 3
-
£507 GBP
$679 USD
View
Price last confirmed 33 days ago
Retailer 4
-
£552 GBP
$739 USD
View
Price last confirmed 34 days ago
Retailer 5
-
£580 GBP
$777 USD
View
Price last confirmed 34 days ago
Retailer 6
-
£588 GBP
$788 USD
View
Price last confirmed 29 days ago
Retailer 7
-
£588 GBP
$788 USD
View
Price last confirmed 22 days ago
A
Retailer 8
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£631 GBP
$846 USD
View
Final sale: no returns
A
Retailer 9
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£691 GBP
$926 USD
View
A
Retailer 10
-
£694 GBP
$930 USD
View
A
Retailer 11
-
£724 GBP
View
A
Retailer 12
-
£763 GBP
$1,022 USD
View
A
Retailer 13
-
£841 GBP
HK$8,800 HKD
View
A
Retailer 14
-
£966 GBP
$1,295 USD
View
A
Retailer 15
-
£1,026 GBP
€1,309 EUR
View
A
Retailer 16
-
£1,028 GBP
View
A
Retailer 17
-
£1,177 GBP
ZAR 25,480 ZAR
View
B+
Retailer 18
-
£1,482 GBP
$1,986 USD
View
B+
Retailer 19
-
£1,595 GBP
A$3,287 AUD
View
Retailer 20
-
£1,634 GBP
$2,190 USD
View
Price last confirmed 8 days ago
B+
Retailer 21
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£1,800 GBP
$2,412 USD
View
Retailer 22
-
£1,826 GBP
$2,446 USD
View
Price last confirmed 22 days ago
Retailer 23
-
£1,826 GBP
$2,446 USD
View
Price last confirmed 32 days ago
B+
Retailer 24
-
£1,979 GBP
$2,651 USD
View
B+
Retailer 25
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£1,995 GBP
$2,673 USD
View
B+
Retailer 26
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£2,019 GBP
$2,705 USD
View
B+
Retailer 27
-
£2,090 GBP
$2,800 USD
View
B
Retailer 28
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£2,092 GBP
$2,803 USD
View
B
Retailer 29
-
£2,291 GBP
$3,070 USD
View
B
Retailer 30
-
£2,422 GBP
SGD 4,385 SGD
View
B+
Retailer 31
-
£2,515 GBP
View
B
Retailer 32
-
£2,695 GBP
A$5,555 AUD
View
B
Retailer 33
-
£4,441 GBP
$5,950 USD
View
Most Expensive
B
Diamond Quarter
1.57IFDLG18AED4N · Oct 31
£4,629 GBP
View
33 more retailers have this diamond
Prices start from £500 GBPSave up to £4,129 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
£500 GBP