Marquise|Lab Grown|IGI

1.03ct E IF Marquise Lab Grown Diamond

GD • E/IF • IGI LG607336787

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG607336787

Diamond specifications and retailer prices

From £183 GBP
$245 USD
As of October 30, 2026
Save £745 GBP (80%) vs most expensive(unlock to see where)
30 retailers carry this diamond
Most expensive: £1,231 GBP at Brilliant Earth · As of October 21, 2026
View at Brilliant Earth

About this 1.03ct lab-grown marquise diamond

This 1.03ct lab-grown marquise sits in the classic one-carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a standard cut grade and certified by IGI LG607336787 or 607336787. Listed at 30 retailers as of October 30, 2026, with a 407% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.03
Carat
E
Colour
IF
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.7°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG607336787
Dimensions10.62 × 5.27 × 3.28 mm
L/W Ratio2.02
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
10.62 mm5.27 mm1.03 ctE / IF
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG607336787
Side View
Table 59.0%Crown 34.7°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 62.2%

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: £1,231 GBP|Low: £160 GBP|High: £1,231 GBP|Avg: £507 GBP
Brilliant Earth
Retailer 2
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Retailer 22
October 30, 2026
Retailer 10£160 GBP
Retailer 19£183 GBP
Retailer 7£199 GBP
Retailer 6£229 GBP
Retailer 5£282 GBP
Retailer 16£338 GBP
Retailer 20£343 GBP
Retailer 2£370 GBP
Retailer 3£375 GBP
Retailer 11£430 GBP
Retailer 8£437 GBP
Retailer 15£448 GBP
Retailer 18£470 GBP
Retailer 21£488 GBP
Retailer 12£564 GBP
Retailer 22£643 GBP
Retailer 9£680 GBP
Retailer 14£720 GBP
Retailer 13£779 GBP
Retailer 17£804 GBP
Retailer 4£928 GBP
Brilliant Earth£1,231 GBP

36 data points across 22 retailers

30 retailers£183 GBP to £928 GBP

Retailer 1
-
£160 GBP
$215 USD
Price last confirmed 22 days ago
A
Retailer 2
-
£183 GBP
$245 USD
View
Final sale: no returns
Retailer 3
-
£191 GBP
$256 USD
View
Price last confirmed 30 days ago
Retailer 4
-
£199 GBP
$267 USD
View
Price last confirmed 22 days ago
Retailer 5
-
£199 GBP
$267 USD
View
Price last confirmed 20 days ago
Retailer 6
-
£222 GBP
$297 USD
View
Price last confirmed 31 days ago
A
Retailer 7
-
£229 GBP
HK$2,400 HKD
View
Retailer 8
-
£234 GBP
$314 USD
View
Price last confirmed 32 days ago
A
Retailer 9
-
£282 GBP
$378 USD
View
A
Retailer 10
-
£338 GBP
€431 EUR
View
A
Retailer 11
-
£343 GBP
ZAR 7,415 ZAR
View
Retailer 12
-
£360 GBP
View
Price last confirmed 15 days ago
A
Retailer 13
-
£370 GBP
View
A
Retailer 14
-
£375 GBP
$502 USD
View
B+
Retailer 15
-
£430 GBP
$576 USD
View
A
Retailer 16
-
£437 GBP
$586 USD
View
B+
Retailer 17
-
£470 GBP
A$968 AUD
View
B+
Retailer 18
-
£488 GBP
A$1,005 AUD
View
B+
Retailer 19
-
£564 GBP
SGD 1,021 SGD
View
B+
Retailer 20
-
£641 GBP
$859 USD
View
Retailer 21
-
£641 GBP
$859 USD
View
Price last confirmed 20 days ago
B
Retailer 22
-
£643 GBP
$862 USD
View
B
Retailer 23
-
£680 GBP
$912 USD
View
B
Retailer 24
-
£720 GBP
$965 USD
View
Retailer 25
-
£762 GBP
$1,021 USD
View
Price last confirmed 30 days ago
B
Retailer 26
-
£779 GBP
A$1,606 AUD
View
B
Retailer 27
-
£804 GBP
View
B
Retailer 28
-
£928 GBP
$1,243 USD
View
Most Expensive
Brilliant Earth
8709998A · Oct 21
£1,231 GBP
$1,650 USD
View
Price last confirmed 9 days ago
28 more retailers have this diamond
Prices start from £183 GBPSave up to £745 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
1.03ct Marquise
£183 GBP