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Marquise|Lab Grown|IGI

0.65ct F SI1 Marquise Lab Grown Diamond

VG • F/SI1 • IGI LG691512355

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG691512355

Diamond specifications and retailer prices

From £86 GBP
$116 USD
As of November 2, 2026
Save £812 GBP (90%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £898 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 0.65ct lab-grown marquise diamond

This 0.65ct lab-grown marquise sits in the half to three-quarter carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG691512355 or 691512355. Listed at 15 retailers as of November 2, 2026, with prices from £86 to £898, a £812 spread on the same certified stone. MOH London lists it at £898. 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

0.65
Carat
F
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle33.8°
Pavilion angle39.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG691512355
Dimensions9.48 × 4.36 × 2.80 mm
L/W Ratio2.17
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.48 mm4.36 mm0.65 ctF / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG691512355
Side View
Table 58.0%Crown 33.8°Girdle: MED-THKPavilion 39.9°Culet: NoneDepth 64.2%

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: £898 GBP|Low: £83 GBP|High: £909 GBP|Avg: £274 GBP|-1.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 10£86 GBP
Retailer 11£115 GBP
Retailer 12£115 GBP
Retailer 7£202 GBP
Retailer 3£210 GBP
Retailer 2£217 GBP
Retailer 8£224 GBP
Retailer 5£234 GBP
Retailer 4£282 GBP
Retailer 9£350 GBP
Retailer 6£385 GBP
MOH London£898 GBP

43 data points across 12 retailers

15 retailers£86 GBP to £898 GBP

Retailer 1
-
£83 GBP
$112 USD
Price last confirmed 31 days ago
A
Retailer 2
-
£86 GBP
$116 USD
View
Retailer 3
-
£101 GBP
$135 USD
View
Price last confirmed 34 days ago
Retailer 4
-
£114 GBP
$153 USD
View
Price last confirmed 35 days ago
B+
Retailer 5
-
£115 GBP
$154 USD
View
Retailer 6
-
£115 GBP
$154 USD
View
Price last confirmed 8 days ago
B+
Retailer 7
-
£210 GBP
$282 USD
View
B+
Retailer 8
-
£217 GBP
View
B+
Retailer 9
-
£224 GBP
$300 USD
View
B+
Retailer 10
-
£234 GBP
View
B
Retailer 11
-
£282 GBP
$379 USD
View
Retailer 12
-
£346 GBP
$464 USD
View
Price last confirmed 33 days ago
Retailer 13
-
£350 GBP
$470 USD
View
Price last confirmed 15 days ago
B
Retailer 14
-
£385 GBP
$517 USD
View
Most Expensive
B
MOH London
LG691512355 · Nov 2
£898 GBP
View
14 more retailers have this diamond
Prices start from £86 GBPSave up to £812 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
0.65ct Marquise
£86 GBP