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Marquise|Lab Grown|IGI

1.61ct D IF Marquise Lab Grown Diamond

EX • D/IF • IGI LG817610778

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG817610778

Diamond specifications and retailer prices

From £476 GBP
$638 USD
As of November 1, 2026
Save £2,248 GBP (83%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £2,724 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.61ct lab-grown marquise diamond

This 1.61ct lab-grown marquise sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG817610778 or 817610778. Listed at 19 retailers as of October 31, 2026, with prices from £476 to £2,724, a £2,248 spread on the same certified stone. Brilliant Earth lists it at £2,724. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.61
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.8°
Pavilion angle38.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG817610778
Dimensions11.81 × 6.07 × 3.74 mm
L/W Ratio1.95
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.81 mm6.07 mm1.61 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG817610778
Side View
Table 58.0%Crown 38.8°Girdle: STK-THKPavilion 38.3°Culet: NoneDepth 61.6%

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 1
Current: £2,724 GBP|Low: £476 GBP|High: £2,814 GBP|Avg: £1,215 GBP|-3.2%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
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Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
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Retailer 17
Retailer 18
Retailer 19
November 2, 2026
Retailer 13£476 GBP
Retailer 4£478 GBP
Retailer 15£627 GBP
Retailer 14£711 GBP
Retailer 16£748 GBP
Retailer 9£776 GBP
Retailer 12£827 GBP
Retailer 18£914 GBP
Retailer 8£918 GBP
Retailer 6£1,239 GBP
Retailer 5£1,320 GBP
Retailer 11£1,558 GBP
Retailer 7£1,618 GBP
Retailer 2£1,667 GBP
Retailer 19£1,716 GBP
Retailer 17£1,749 GBP
Retailer 10£2,332 GBP
Retailer 3£2,695 GBP
Brilliant Earth£2,724 GBP

19 data points across 19 retailers

19 retailers£476 GBP to £2,724 GBP

A
Cheapest Retailer
-
£476 GBP
$638 USD
A
Retailer 2
-
£478 GBP
$640 USD
View
Final sale: no returns
A
Retailer 3
-
£627 GBP
$840 USD
View
A
Retailer 4
-
£711 GBP
$952 USD
View
A
Retailer 5
-
£748 GBP
$1,002 USD
View
A
Retailer 6
-
£776 GBP
€990 EUR
View
A
Retailer 7
-
£827 GBP
View
A
Retailer 8
-
£914 GBP
$1,225 USD
View
A
Retailer 9
-
£918 GBP
ZAR 19,873 ZAR
View
A
Retailer 10
-
£1,239 GBP
A$2,554 AUD
View
B+
Retailer 11
-
£1,320 GBP
$1,769 USD
View
B+
Retailer 12
-
£1,558 GBP
View
B+
Retailer 13
-
£1,618 GBP
$2,168 USD
View
B+
Retailer 14
-
£1,667 GBP
SGD 3,018 SGD
View
B+
Retailer 15
-
£1,716 GBP
$2,299 USD
View
B+
Retailer 16
-
£1,749 GBP
$2,344 USD
View
B+
Retailer 17
-
£2,332 GBP
View
B
Retailer 18
-
£2,695 GBP
A$5,555 AUD
View
Most Expensive
B
Brilliant Earth
20772153A · Oct 31
£2,724 GBP
$3,650 USD
View
18 more retailers have this diamond
Prices start from £476 GBPSave up to £2,248 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
1.61ct Marquise
£476 GBP