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Marquise|Lab Grown|IGI

1.00ct E IF Marquise Lab Grown Diamond

VG • E/IF • IGI LG843685848

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG843685848

Diamond specifications and retailer prices

From £194 GBP
$259 USD
As of October 28, 2026
Save £1,082 GBP (85%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £1,277 GBP at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 1ct lab-grown marquise diamond

This 1ct lab-grown marquise sits in the classic one-carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG843685848 or 843685848. Listed at 17 retailers as of October 28, 2026, with prices from £194 to £1,277, a £1,082 spread on the same certified stone. Brilliant Earth lists it at £1,277. 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

1.00
Carat
E
Colour
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle39.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG843685848
Dimensions10.18 × 5.20 × 3.18 mm
L/W Ratio1.96
Girdle conditionFaceted
Culet sizeNone
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
10.18 mm5.20 mm1.00 ctE / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG843685848
Side View
Table 59.0%Crown 34.8°Girdle: STK-THKPavilion 39.2°Culet: NoneDepth 61.2%

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 28
Current: £1,277 GBP|Low: £194 GBP|High: £1,277 GBP|Avg: £523 GBP|+1.2%
Brilliant Earth
Retailer 2
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Retailer 6
Retailer 7
Retailer 8
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Retailer 10
Retailer 11
Retailer 12
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Retailer 16
October 29, 2026
Retailer 4£194 GBP
Retailer 15£216 GBP
Retailer 10£229 GBP
Retailer 5£294 GBP
Retailer 8£360 GBP
Retailer 14£365 GBP
Retailer 11£370 GBP
Retailer 2£405 GBP
Retailer 16£422 GBP
Retailer 12£525 GBP
Retailer 13£692 GBP
Retailer 6£695 GBP
Retailer 3£732 GBP
Retailer 9£868 GBP
Retailer 7£971 GBP
Brilliant Earth£1,277 GBP

22 data points across 16 retailers

17 retailers£194 GBP to £1,277 GBP

A
Cheapest Retailer
-
£194 GBP
$259 USD
Final sale: no returns
A
Retailer 2
-
£216 GBP
$287 USD
View
A
Retailer 3
-
£217 GBP
$289 USD
View
Price last confirmed 19 days ago
A
Retailer 4
-
£229 GBP
View
A
Retailer 5
-
£294 GBP
$392 USD
View
A
Retailer 6
-
£365 GBP
€463 EUR
View
A
Retailer 7
-
£370 GBP
ZAR 7,961 ZAR
View
A
Retailer 8
-
£405 GBP
View
A
Retailer 9
-
£422 GBP
$562 USD
View
B+
Retailer 10
-
£525 GBP
A$1,076 AUD
View
B+
Retailer 11
-
£692 GBP
$922 USD
View
B
Retailer 12
-
£695 GBP
$925 USD
View
B
Retailer 13
-
£698 GBP
$930 USD
View
Price last confirmed 19 days ago
B+
Retailer 14
-
£732 GBP
$974 USD
View
B
Retailer 15
-
£868 GBP
View
B
Retailer 16
-
£971 GBP
$1,294 USD
View
Most Expensive
B
Brilliant Earth
21735134A · Oct 28
£1,277 GBP
$1,700 USD
View
16 more retailers have this diamond
Prices start from £194 GBPSave up to £1,082 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
1.00ct Marquise
£194 GBP