CaratHunter
Plans
Marquise|Lab Grown|IGI

1.57ct D IF Marquise Lab Grown Diamond

ID • D/IF • IGI LG790630196

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG790630196

Diamond specifications and retailer prices

From £480 GBP
$638 USD
As of October 29, 2026
Save £2,959 GBP (86%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £3,439 GBP at Brilliant Earth · As of October 28, 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 LG790630196 or 790630196. Listed at 18 retailers as of October 28, 2026, with prices from £480 to £3,439, a £2,959 spread on the same certified stone. Brilliant Earth lists it at £3,439. 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 angle33.8°
Pavilion angle39.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG790630196
Dimensions12.02 × 5.95 × 3.71 mm
L/W Ratio2.02
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.02 mm5.95 mm1.57 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG790630196
Side View
Table 58.0%Crown 33.8°Girdle: MED-THKPavilion 39.6°Culet: NoneDepth 62.4%

Caratlytics Score

How it works →
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 29
Current: £919 GBP|Low: £480 GBP|High: £2,418 GBP|Avg: £1,227 GBP|+1.1%
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
October 29, 2026
Retailer 10£480 GBP
Retailer 9£632 GBP
Retailer 15£716 GBP
Retailer 6£756 GBP
Retailer 16£830 GBP
Retailer 2£884 GBP
Retailer 1£919 GBP
Retailer 13£919 GBP
Retailer 8£1,268 GBP
Retailer 7£1,333 GBP
Retailer 5£1,560 GBP
Retailer 12£1,619 GBP
Retailer 11£1,685 GBP
Retailer 3£1,732 GBP
Retailer 14£1,766 GBP
Retailer 4£2,334 GBP

20 data points across 16 retailers

18 retailers£480 GBP to £3,439 GBP

A+
Cheapest Retailer
-
£480 GBP
$638 USD
Final sale: no returns
A
Retailer 2
-
£632 GBP
$840 USD
View
A
Retailer 3
-
£716 GBP
$952 USD
View
A
Retailer 4
-
£756 GBP
$1,004 USD
View
A
Retailer 5
-
£830 GBP
View
A
Retailer 6
-
£884 GBP
$1,175 USD
View
A
Retailer 7
-
£919 GBP
€1,163 EUR
View
A
Retailer 8
-
£919 GBP
ZAR 19,729 ZAR
View
B+
Retailer 9
-
£1,268 GBP
A$2,593 AUD
View
Price last confirmed 8 days ago
B+
Retailer 10
-
£1,333 GBP
$1,771 USD
View
B+
Retailer 11
-
£1,560 GBP
View
B+
Retailer 12
-
£1,619 GBP
$2,151 USD
View
B+
Retailer 13
-
£1,685 GBP
SGD 3,026 SGD
View
B+
Retailer 14
-
£1,732 GBP
$2,302 USD
View
B+
Retailer 15
-
£1,766 GBP
$2,347 USD
View
B+
Retailer 16
-
£2,334 GBP
View
B
Retailer 17
-
£2,685 GBP
A$5,489 AUD
View
Price last confirmed 20 days ago
Most Expensive
B
Brilliant Earth
19055469A · Oct 28
£3,439 GBP
$4,570 USD
View
17 more retailers have this diamond
Prices start from £480 GBPSave up to £2,959 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
£480 GBP