Marquise|Lab Grown|IGI

1.77ct E IF Marquise Lab Grown Diamond

ID • E/IF • IGI LG628407568

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG628407568

Diamond specifications and retailer prices

From £788 GBP
HK$8,200 HKD
As of October 30, 2026
Save £2,674 GBP (77%) vs most expensive(unlock to see where)
28 retailers carry this diamond
Most expensive: £4,138 GBP at Do Amore Diamonds · As of October 23, 2026
View at Do Amore Diamonds

About this 1.77ct lab-grown marquise diamond

This 1.77ct lab-grown marquise sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG628407568 or 628407568. Listed at 28 retailers as of October 28, 2026, with a 339% 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

1.77
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG628407568
Dimensions12.86 × 6.19 × 3.94 mm
L/W Ratio2.08
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
12.86 mm6.19 mm1.77 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG628407568
Side View
Table 61.0%Crown 34.6°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 63.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: £4,138 GBP|Low: £466 GBP|High: £5,289 GBP|Avg: £1,992 GBP
Do Amore Diamonds
Retailer 2
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Retailer 23
October 22, 2026
Retailer 10£466 GBP
Retailer 9£578 GBP
Retailer 3£587 GBP
Retailer 13£676 GBP
Retailer 22£741 GBP
Retailer 5£788 GBP
Retailer 8£849 GBP
Retailer 14£901 GBP
Retailer 19£922 GBP
Retailer 2£948 GBP
Retailer 17£1,085 GBP
Retailer 21£1,434 GBP
Retailer 11£1,521 GBP
Retailer 20£1,675 GBP
Retailer 7£1,844 GBP
Retailer 4£1,890 GBP
Retailer 23£2,142 GBP
Retailer 12£2,271 GBP
Retailer 6£2,277 GBP
Retailer 18£2,527 GBP
Retailer 16£3,010 GBP
Retailer 15£3,462 GBP
Do Amore Diamonds£4,138 GBP

35 data points across 23 retailers

28 retailers£788 GBP to £3,462 GBP

Retailer 1
-
£466 GBP
$621 USD
Price last confirmed 22 days ago
Retailer 2
-
£578 GBP
$770 USD
View
Price last confirmed 21 days ago
Retailer 3
-
£578 GBP
$770 USD
View
Price last confirmed 19 days ago
Retailer 4
-
£676 GBP
$900 USD
View
Price last confirmed 6 days ago
Retailer 5
-
£741 GBP
$987 USD
View
Price last confirmed 8 days ago
A
Retailer 6
-
£788 GBP
HK$8,200 HKD
View
A
Retailer 7
-
£849 GBP
$1,130 USD
View
Retailer 8
-
£901 GBP
$1,200 USD
View
Price last confirmed 9 days ago
Retailer 9
-
£948 GBP
View
Price last confirmed 8 days ago
Retailer 10
-
£1,085 GBP
ZAR 23,341 ZAR
View
Price last confirmed 10 days ago
Retailer 11
-
£1,137 GBP
$1,514 USD
View
Price last confirmed 30 days ago
Retailer 12
-
£1,237 GBP
$1,647 USD
View
Price last confirmed 31 days ago
Retailer 13
-
£1,301 GBP
$1,732 USD
View
Price last confirmed 31 days ago
Retailer 14
-
£1,434 GBP
$1,910 USD
View
Price last confirmed 8 days ago
Retailer 15
-
£1,521 GBP
$2,025 USD
View
Price last confirmed 8 days ago
Retailer 16
-
£1,675 GBP
$2,230 USD
View
Price last confirmed 8 days ago
Retailer 17
-
£1,678 GBP
$2,234 USD
View
Price last confirmed 19 days ago
Retailer 18
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£1,678 GBP
$2,234 USD
View
Price last confirmed 8 days ago
Retailer 19
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£1,844 GBP
$2,455 USD
View
Price last confirmed 7 days ago
Retailer 20
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£1,890 GBP
$2,517 USD
View
Price last confirmed 9 days ago
Retailer 21
-
£2,142 GBP
$2,852 USD
View
Price last confirmed 8 days ago
Retailer 22
-
£2,271 GBP
SGD 4,087 SGD
View
Price last confirmed 9 days ago
Retailer 23
-
£2,277 GBP
A$4,664 AUD
View
Price last confirmed 21 days ago
Retailer 24
-
£2,527 GBP
View
Price last confirmed 11 days ago
Retailer 25
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£2,729 GBP
$3,634 USD
View
Price last confirmed 29 days ago
Retailer 26
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£3,010 GBP
View
Price last confirmed 23 days ago
B
Retailer 27
-
£3,462 GBP
$4,610 USD
View
Most Expensive
Do Amore Diamonds
27-E398F2DD7 · Oct 23
£4,138 GBP
$5,510 USD
View
Price last confirmed 7 days ago
27 more retailers have this diamond
Prices start from £788 GBPSave up to £2,674 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
1.77ct Marquise
£788 GBP