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Marquise|Lab Grown|IGI

0.68ct D IF Marquise Lab Grown Diamond

EX • D/IF • IGI LG660435735

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG660435735

Diamond specifications and retailer prices

From £139 GBP
$186 USD
As of November 2, 2026
Save £1,660 GBP (92%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £1,799 GBP at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 0.68ct lab-grown marquise diamond

This 0.68ct lab-grown marquise sits in the half to three-quarter carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG660435735 or 660435735. Listed at 22 retailers as of October 31, 2026, with prices from £139 to £1,799, a £1,660 spread on the same certified stone. Do Amore Diamonds lists it at £1,799. Flawless clarity in sub-one-carat stones is rarely visible to the naked eye over VS1, so you are paying a meaningful premium for grade rather than appearance.

The 4Cs

0.68
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG660435735
Dimensions8.90 × 4.71 × 2.87 mm
L/W Ratio1.89
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
8.90 mm4.71 mm0.68 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG660435735
Side View
Table 61.0%Crown 34.6°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 60.9%

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: £344 GBP|Low: £135 GBP|High: £1,142 GBP|Avg: £561 GBP|+2.3%
Retailer 1
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Retailer 21
November 1, 2026
Retailer 8£139 GBP
Retailer 4£154 GBP
Retailer 20£160 GBP
Retailer 15£172 GBP
Retailer 14£259 GBP
Retailer 1£344 GBP
Retailer 21£351 GBP
Retailer 7£396 GBP
Retailer 3£484 GBP
Retailer 6£487 GBP
Retailer 13£530 GBP
Retailer 18£609 GBP
Retailer 17£715 GBP
Retailer 5£738 GBP
Retailer 10£739 GBP
Retailer 9£776 GBP
Retailer 2£857 GBP
Retailer 12£886 GBP
Retailer 11£892 GBP
Retailer 16£1,105 GBP
Retailer 19£1,105 GBP

37 data points across 21 retailers

22 retailers£139 GBP to £1,799 GBP

A
Cheapest Retailer
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£139 GBP
$186 USD
A
Retailer 2
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£154 GBP
$207 USD
View
Final sale: no returns
A
Retailer 3
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£160 GBP
$215 USD
View
A
Retailer 4
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£172 GBP
$230 USD
View
A
Retailer 5
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£259 GBP
$347 USD
View
A
Retailer 6
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£322 GBP
$432 USD
View
A
Retailer 7
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£344 GBP
ZAR 7,456 ZAR
View
A
Retailer 8
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£351 GBP
$470 USD
View
A
Retailer 9
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£396 GBP
$531 USD
View
B+
Retailer 10
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£484 GBP
A$997 AUD
View
Retailer 11
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£487 GBP
€622 EUR
View
Price last confirmed 7 days ago
B+
Retailer 12
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£530 GBP
$710 USD
View
B+
Retailer 13
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£609 GBP
$816 USD
View
B+
Retailer 14
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£715 GBP
A$1,474 AUD
View
B+
Retailer 15
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£738 GBP
$989 USD
View
Retailer 16
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£739 GBP
View
Price last confirmed 13 days ago
B
Retailer 17
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£776 GBP
CA$1,443 CAD
View
B+
Retailer 18
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£857 GBP
$1,149 USD
View
B
Retailer 19
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£886 GBP
View
B
Retailer 20
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£1,105 GBP
$1,480 USD
View
B
Retailer 21
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£1,105 GBP
$1,480 USD
View
Most Expensive
B
Do Amore Diamonds
32-LG660435735 · Oct 31
£1,799 GBP
$2,410 USD
View
21 more retailers have this diamond
Prices start from £139 GBPSave up to £1,660 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
0.68ct Marquise
£139 GBP