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Marquise|Lab Grown|IGI

1.03ct D IF Marquise Lab Grown Diamond

EX • D/IF • IGI LG811619625

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG811619625

Diamond specifications and retailer prices

From £189 GBP
$253 USD
As of November 2, 2026
Save £1,028 GBP (84%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £1,217 GBP at Brilliant Earth · As of October 31, 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 D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG811619625 or 811619625. Listed at 24 retailers as of October 31, 2026, with prices from £189 to £1,217, a £1,028 spread on the same certified stone. Brilliant Earth lists it at £1,217. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.03
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.6°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811619625
Dimensions10.27 × 5.42 × 3.24 mm
L/W Ratio1.89
Girdle conditionFaceted
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
10.27 mm5.42 mm1.03 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811619625
Side View
Table 60.0%Crown 32.6°Girdle: MED-STKPavilion 39.8°Culet: NoneDepth 59.8%

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: Nov 2
Current: £1,217 GBP|Low: £181 GBP|High: £1,866 GBP|Avg: £571 GBP|-34.8%
Brilliant Earth
Retailer 2
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Retailer 11
Retailer 12
Retailer 13
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Retailer 18
November 2, 2026
Retailer 6£189 GBP
Retailer 3£219 GBP
Retailer 4£234 GBP
Retailer 5£234 GBP
Retailer 2£241 GBP
Retailer 10£315 GBP
Retailer 17£317 GBP
Retailer 12£404 GBP
Retailer 15£426 GBP
Retailer 11£442 GBP
Retailer 13£450 GBP
Retailer 16£569 GBP
Retailer 8£592 GBP
Retailer 7£752 GBP
Retailer 9£910 GBP
Retailer 18£938 GBP
Retailer 14£1,078 GBP
Brilliant Earth£1,217 GBP

32 data points across 18 retailers

24 retailers£189 GBP to £1,217 GBP

A
Cheapest Retailer
-
£189 GBP
$253 USD
A
Retailer 2
-
£211 GBP
$283 USD
View
Final sale: no returns
A
Retailer 3
-
£219 GBP
$293 USD
View
Retailer 4
-
£234 GBP
$313 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
£234 GBP
$313 USD
View
A
Retailer 6
-
£241 GBP
View
A
Retailer 7
-
£315 GBP
$422 USD
View
A
Retailer 8
-
£317 GBP
$425 USD
View
A
Retailer 9
-
£404 GBP
ZAR 8,741 ZAR
View
A
Retailer 10
-
£416 GBP
$558 USD
View
A
Retailer 11
-
£426 GBP
€543 EUR
View
A
Retailer 12
-
£437 GBP
$586 USD
View
A
Retailer 13
-
£442 GBP
View
A
Retailer 14
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£450 GBP
A$928 AUD
View
B+
Retailer 15
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£569 GBP
A$1,173 AUD
View
B+
Retailer 16
-
£592 GBP
$793 USD
View
B+
Retailer 17
-
£629 GBP
SGD 1,139 SGD
View
B+
Retailer 18
-
£752 GBP
$1,007 USD
View
B
Retailer 19
-
£790 GBP
$1,059 USD
View
B
Retailer 20
-
£910 GBP
View
B+
Retailer 21
-
£938 GBP
View
B
Retailer 22
-
£1,016 GBP
$1,362 USD
View
B
Retailer 23
-
£1,078 GBP
A$2,222 AUD
View
Most Expensive
B
Brilliant Earth
20879646A · Oct 31
£1,217 GBP
$1,630 USD
View
23 more retailers have this diamond
Prices start from £189 GBPSave up to £1,028 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
£189 GBP