CaratHunter
Plans
Marquise|Lab Grown|IGI

1.03ct E IF Marquise Lab Grown Diamond

EX • E/IF • IGI LG628401222

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG628401222

Diamond specifications and retailer prices

From £166 GBP
$222 USD
As of October 30, 2026
Save £1,230 GBP (88%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: £1,396 GBP at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

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 top-tier cut grade and certified by IGI LG628401222 or 628401222. Listed at 27 retailers as of October 29, 2026, with prices from £166 to £1,396, a £1,230 spread on the same certified stone. Do Amore Diamonds lists it at £1,396. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.03
Carat
E
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.9°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG628401222
Dimensions5.12 × 5.12 × 3.25 mm
L/W Ratio1.00
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
5.12 mm5.12 mm1.03 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG628401222
Side View
Table 60.0%Crown 33.9°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 63.5%

Caratlytics Score

How it works →
A
Excellent
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: £1,396 GBP|Low: £146 GBP|High: £1,396 GBP|Avg: £555 GBP
Do Amore Diamonds
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
Retailer 17
Retailer 18
Retailer 19
Retailer 20
October 30, 2026
Retailer 10£146 GBP
Retailer 18£166 GBP
Retailer 6£181 GBP
Retailer 5£282 GBP
Retailer 17£287 GBP
Retailer 8£337 GBP
Retailer 14£338 GBP
Retailer 16£343 GBP
Retailer 3£358 GBP
Retailer 13£370 GBP
Retailer 11£430 GBP
Retailer 20£583 GBP
Retailer 12£691 GBP
Retailer 7£769 GBP
Retailer 19£795 GBP
Retailer 9£795 GBP
Retailer 15£804 GBP
Retailer 4£880 GBP
Retailer 2£1,022 GBP
Do Amore Diamonds£1,396 GBP

42 data points across 20 retailers

27 retailers£166 GBP to £1,396 GBP

Retailer 1
-
£146 GBP
$195 USD
Price last confirmed 22 days ago
A
Retailer 2
-
£166 GBP
$222 USD
View
Final sale: no returns
Retailer 3
-
£173 GBP
$232 USD
View
Price last confirmed 31 days ago
Retailer 4
-
£181 GBP
$242 USD
View
Price last confirmed 22 days ago
Retailer 5
-
£181 GBP
$242 USD
View
Price last confirmed 20 days ago
Retailer 6
-
£201 GBP
$269 USD
View
Price last confirmed 32 days ago
Retailer 7
-
£212 GBP
$284 USD
View
Price last confirmed 32 days ago
A
Retailer 8
-
£282 GBP
$378 USD
View
A
Retailer 9
-
£287 GBP
HK$3,000 HKD
View
A
Retailer 10
-
£337 GBP
$452 USD
View
A
Retailer 11
-
£338 GBP
€431 EUR
View
A
Retailer 12
-
£343 GBP
ZAR 7,415 ZAR
View
A
Retailer 13
-
£358 GBP
$480 USD
View
A
Retailer 14
-
£370 GBP
View
A
Retailer 15
-
£430 GBP
$576 USD
View
B+
Retailer 16
-
£583 GBP
$781 USD
View
B+
Retailer 17
-
£641 GBP
$859 USD
View
Retailer 18
-
£641 GBP
$859 USD
View
Price last confirmed 20 days ago
B+
Retailer 19
-
£691 GBP
SGD 1,251 SGD
View
Retailer 20
-
£762 GBP
$1,021 USD
View
Price last confirmed 30 days ago
B+
Retailer 21
-
£769 GBP
$1,031 USD
View
B+
Retailer 22
-
£795 GBP
$1,065 USD
View
Retailer 23
-
£795 GBP
A$1,639 AUD
View
Price last confirmed 22 days ago
B+
Retailer 24
-
£804 GBP
View
B
Retailer 25
-
£880 GBP
$1,179 USD
View
B
Retailer 26
-
£1,022 GBP
$1,370 USD
View
Most Expensive
B
Do Amore Diamonds
27-AE3709F7E · Oct 29
£1,396 GBP
$1,870 USD
View
26 more retailers have this diamond
Prices start from £166 GBPSave up to £1,230 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
£166 GBP