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Marquise|Lab Grown|IGI

0.78ct E VVS1 Marquise Lab Grown Diamond

VG • E/VVS1 • IGI LG821655577

Certificate IGI LG821655577

Diamond specifications and retailer prices

From £477 GBP
$640 USD
As of October 31, 2026
Save £164 GBP (26%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £641 GBP at Kay Jewelers · As of November 2, 2026
View at Kay Jewelers

About this 0.78ct lab-grown marquise diamond

This 0.78ct lab-grown marquise sits in the just-under-one-carat band, graded E colour (colourless) and VVS1 clarity (very-very-slightly-included), with a very-good cut grade and certified by IGI LG821655577 or 821655577. Listed at 4 retailers as of October 31, 2026, with prices from £477 to £641, a £164 spread on the same certified stone. Kay Jewelers lists it at £641. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.78
Carat
E
Colour
VVS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG821655577
Dimensions10.01 × 4.82 × 2.90 mm
L/W Ratio2.08
Top View
10.01 mm4.82 mm0.78 ctE / VVS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG821655577
Side View
Table 56.0%CrownGirdle: MediumPavilionCulet: NoneDepth 60.2%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £641 GBP|Low: £477 GBP|High: £641 GBP|Avg: £589 GBP
Kay Jewelers
Retailer 2
Retailer 3
Retailer 4
September 28, 2026
Retailer 4£477 GBP
Retailer 2£551 GBP
Kay Jewelers£641 GBP
Retailer 3£641 GBP

3 data points across 4 retailers

4 retailers£477 GBP to £641 GBP

B
Cheapest Retailer
-
£477 GBP
$640 USD
B
Retailer 2
-
£551 GBP
$740 USD
View
B
Retailer 3
-
£641 GBP
$860 USD
View
Most Expensive
B
Kay Jewelers
259899394 · Nov 2
£641 GBP
$860 USD
View
3 more retailers have this diamond
Prices start from £477 GBPSave up to £164 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.

B
0.78ct Marquise
£477 GBP