Marquise|Lab Grown|IGI

1.01ct D FL Marquise Lab Grown Diamond

EX • D/FL • IGI LG831604026

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG831604026

Diamond specifications and retailer prices

From £190 GBP
$255 USD
As of October 30, 2026
Save £1,295 GBP (87%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £1,500 GBP at Rare Carat · As of September 30, 2026
View at Rare Carat

About this 1.01ct lab-grown marquise diamond

This 1.01ct lab-grown marquise sits in the classic one-carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG831604026 or 831604026. Listed at 23 retailers as of October 30, 2026, with a 680% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.01
Carat
D
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831604026
Dimensions10.29 × 5.28 × 3.33 mm
L/W Ratio1.95
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
10.29 mm5.28 mm1.01 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831604026
Side View
Table 58.0%Crown 35.8°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 63.1%

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: Oct 30
Current: £446 GBP|Low: £190 GBP|High: £2,023 GBP|Avg: £619 GBP|-17.0%
Retailer 1
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October 31, 2026
Retailer 16£190 GBP
Retailer 6£212 GBP
Retailer 3£236 GBP
Retailer 18£244 GBP
Retailer 4£258 GBP
Retailer 13£284 GBP
Retailer 5£306 GBP
Retailer 14£322 GBP
Retailer 12£417 GBP
Retailer 20£424 GBP
Retailer 1£446 GBP
Retailer 10£491 GBP
Retailer 9£520 GBP
Retailer 8£633 GBP
Retailer 11£714 GBP
Retailer 2£797 GBP
Retailer 19£828 GBP
Retailer 7£951 GBP
Retailer 17£1,022 GBP
Retailer 15£1,485 GBP

30 data points across 20 retailers

23 retailers£190 GBP to £1,485 GBP

A
Cheapest Retailer
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£190 GBP
$255 USD
A
Retailer 2
-
£212 GBP
$284 USD
View
Final sale: no returns
A
Retailer 3
-
£236 GBP
$316 USD
View
A
Retailer 4
-
£244 GBP
View
A
Retailer 5
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£258 GBP
HK$2,700 HKD
View
A
Retailer 6
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£284 GBP
$380 USD
View
A
Retailer 7
-
£303 GBP
$406 USD
View
A
Retailer 8
-
£306 GBP
$410 USD
View
A
Retailer 9
-
£322 GBP
$432 USD
View
A
Retailer 10
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£417 GBP
$559 USD
View
A
Retailer 11
-
£424 GBP
$568 USD
View
A
Retailer 12
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£446 GBP
View
B+
Retailer 13
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£491 GBP
€626 EUR
View
B+
Retailer 14
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£520 GBP
ZAR 11,263 ZAR
View
B+
Retailer 15
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£633 GBP
SGD 1,146 SGD
View
B+
Retailer 16
-
£714 GBP
$957 USD
View
B
Retailer 17
-
£797 GBP
$1,068 USD
View
B
Retailer 18
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£828 GBP
$1,109 USD
View
B
Retailer 19
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£951 GBP
View
B
Retailer 20
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£973 GBP
$1,304 USD
View
B
Retailer 21
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£1,022 GBP
$1,369 USD
View
B
Retailer 22
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£1,485 GBP
$1,990 USD
View
Most Expensive
Rare Carat
PE0266040PA831 · Sep 30
£1,500 GBP
$2,010 USD
View
Price last confirmed 31 days ago
22 more retailers have this diamond
Prices start from £190 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
1.01ct Marquise
£190 GBP