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Marquise|Lab Grown|IGI

1.09ct E IF Marquise Lab Grown Diamond

ID • E/IF • IGI LG500166725

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG500166725

Diamond specifications and retailer prices

From £175 GBP
$235 USD
As of November 1, 2026
Save £1,295 GBP (88%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £1,470 GBP at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 1.09ct lab-grown marquise diamond

This 1.09ct 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 LG500166725 or 500166725. Listed at 24 retailers as of October 31, 2026, with prices from £175 to £1,470, a £1,295 spread on the same certified stone. Do Amore Diamonds lists it at £1,470. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.09
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.4°
Pavilion angle39.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG500166725
Dimensions10.62 × 5.46 × 3.35 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
10.62 mm5.46 mm1.09 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG500166725
Side View
Table 58.5%Crown 33.4°Girdle: MED-STKPavilion 39.6°Culet: NoneDepth 61.4%

Caratlytics Score

How it works →
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: Nov 1
Current: £1,470 GBP|Low: £172 GBP|High: £1,470 GBP|Avg: £604 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
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Retailer 17
Retailer 18
November 2, 2026
Retailer 12£175 GBP
Retailer 5£295 GBP
Retailer 6£296 GBP
Retailer 16£353 GBP
Retailer 11£362 GBP
Retailer 3£368 GBP
Retailer 8£375 GBP
Retailer 2£388 GBP
Retailer 14£499 GBP
Retailer 17£511 GBP
Retailer 18£612 GBP
Retailer 9£716 GBP
Retailer 7£802 GBP
Retailer 10£838 GBP
Retailer 13£840 GBP
Retailer 4£903 GBP
Retailer 15£1,082 GBP
Do Amore Diamonds£1,470 GBP

41 data points across 18 retailers

24 retailers£175 GBP to £1,470 GBP

Retailer 1
-
£153 GBP
$205 USD
Price last confirmed 25 days ago
A
Retailer 2
-
£175 GBP
$235 USD
View
Final sale: no returns
Retailer 3
-
£182 GBP
$244 USD
View
Price last confirmed 33 days ago
Retailer 4
-
£190 GBP
$254 USD
View
Price last confirmed 24 days ago
Retailer 5
-
£211 GBP
$283 USD
View
Price last confirmed 34 days ago
Retailer 6
-
£223 GBP
$299 USD
View
Price last confirmed 34 days ago
A
Retailer 7
-
£295 GBP
$395 USD
View
A
Retailer 8
-
£296 GBP
HK$3,100 HKD
View
A
Retailer 9
-
£353 GBP
€450 EUR
View
A
Retailer 10
-
£362 GBP
ZAR 7,830 ZAR
View
A
Retailer 11
-
£368 GBP
$493 USD
View
A
Retailer 12
-
£375 GBP
$502 USD
View
A
Retailer 13
-
£388 GBP
View
B+
Retailer 14
-
£499 GBP
A$1,028 AUD
View
A
Retailer 15
-
£511 GBP
A$1,053 AUD
View
B+
Retailer 16
-
£612 GBP
$820 USD
View
B+
Retailer 17
-
£716 GBP
SGD 1,296 SGD
View
Retailer 18
-
£802 GBP
$1,074 USD
View
Price last confirmed 32 days ago
B+
Retailer 19
-
£802 GBP
$1,074 USD
View
Retailer 20
-
£838 GBP
A$1,727 AUD
View
Price last confirmed 25 days ago
B+
Retailer 21
-
£840 GBP
View
B
Retailer 22
-
£903 GBP
$1,210 USD
View
B+
Retailer 23
-
£1,082 GBP
$1,450 USD
View
Most Expensive
B
Do Amore Diamonds
27-08963D803 · Oct 31
£1,470 GBP
$1,970 USD
View
23 more retailers have this diamond
Prices start from £175 GBPSave up to £1,295 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
1.09ct Marquise
£175 GBP