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Marquise|Lab Grown|IGI

1.57ct D IF Marquise Lab Grown Diamond

EX • D/IF • IGI LG732556465

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG732556465

Diamond specifications and retailer prices

From £517 GBP
$693 USD
As of October 30, 2026
Save £1,893 GBP (79%) vs most expensive(unlock to see where)
29 retailers carry this diamond
Most expensive: £2,411 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

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 LG732556465 or 732556465. Listed at 29 retailers as of October 30, 2026, with prices from £517 to £2,411, a £1,893 spread on the same certified stone. Brilliant Earth lists it at £2,411. 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 angle34.7°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG732556465
Dimensions11.97 × 6.14 × 3.84 mm
L/W Ratio1.95
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
11.97 mm6.14 mm1.57 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG732556465
Side View
Table 60.0%Crown 34.7°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 62.5%

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: £2,411 GBP|Low: £517 GBP|High: £3,411 GBP|Avg: £1,483 GBP|-29.3%
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
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Retailer 17
Retailer 18
October 31, 2026
Retailer 8£517 GBP
Retailer 5£563 GBP
Retailer 12£680 GBP
Retailer 16£697 GBP
Retailer 15£731 GBP
Retailer 6£872 GBP
Retailer 17£952 GBP
Retailer 2£961 GBP
Retailer 14£1,103 GBP
Retailer 13£1,105 GBP
Retailer 4£1,478 GBP
Retailer 11£1,494 GBP
Retailer 10£1,687 GBP
Retailer 9£1,865 GBP
Retailer 3£2,019 GBP
Retailer 18£2,359 GBP
Brilliant Earth£2,411 GBP
Retailer 7£2,727 GBP

29 data points across 18 retailers

29 retailers£517 GBP to £2,411 GBP

A
Cheapest Retailer
-
£517 GBP
$693 USD
A
Retailer 2
-
£563 GBP
$754 USD
View
A
Retailer 3
-
£579 GBP
$776 USD
View
Final sale: no returns
A
Retailer 4
-
£600 GBP
$804 USD
View
Retailer 5
-
£600 GBP
$804 USD
View
Price last confirmed 16 days ago
A
Retailer 6
-
£680 GBP
View
A
Retailer 7
-
£697 GBP
HK$7,300 HKD
View
A
Retailer 8
-
£731 GBP
$980 USD
View
A
Retailer 9
-
£781 GBP
$1,047 USD
View
A
Retailer 10
-
£872 GBP
$1,168 USD
View
A
Retailer 11
-
£907 GBP
$1,215 USD
View
A
Retailer 12
-
£952 GBP
€1,215 EUR
View
A
Retailer 13
-
£961 GBP
View
A
Retailer 14
-
£1,103 GBP
ZAR 23,869 ZAR
View
A
Retailer 15
-
£1,105 GBP
A$2,278 AUD
View
B+
Retailer 16
-
£1,478 GBP
$1,980 USD
View
B+
Retailer 17
-
£1,494 GBP
A$3,079 AUD
View
B+
Retailer 18
-
£1,687 GBP
$2,260 USD
View
Retailer 19
-
£1,838 GBP
$2,463 USD
View
Price last confirmed 55 days ago
B+
Retailer 20
-
£1,865 GBP
View
B+
Retailer 21
-
£1,941 GBP
$2,601 USD
View
B
Retailer 22
-
£2,019 GBP
$2,705 USD
View
B+
Retailer 23
-
£2,046 GBP
$2,742 USD
View
B
Retailer 24
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£2,065 GBP
$2,767 USD
View
B
Retailer 25
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£2,069 GBP
$2,772 USD
View
B
Retailer 26
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£2,123 GBP
View
B
Retailer 27
-
£2,137 GBP
$2,863 USD
View
B+
Retailer 28
-
£2,359 GBP
View
Most Expensive
B
Brilliant Earth
15698475A · Oct 30
£2,411 GBP
$3,230 USD
View
28 more retailers have this diamond
Prices start from £517 GBPSave up to £1,893 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
£517 GBP