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Marquise|Lab Grown|IGI

1.38ct D VS1 Marquise Lab Grown Diamond

ID • D/VS1 • IGI LG818689035

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG818689035

Diamond specifications and retailer prices

From £197 GBP
$265 USD
As of November 1, 2026
Save £682 GBP (78%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: £1,666 GBP at Queensmith · As of October 27, 2026
View at Queensmith

About this 1.38ct lab-grown marquise diamond

This 1.38ct lab-grown marquise sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG818689035 or 818689035. Listed at 26 retailers as of November 1, 2026, with a 345% 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

1.38
Carat
D
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.2°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818689035
Dimensions11.97 × 5.76 × 3.58 mm
L/W Ratio2.08
Girdle conditionFaceted
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
11.97 mm5.76 mm1.38 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818689035
Side View
Table 60.0%Crown 33.2°Girdle: MediumPavilion 40.6°Culet: NoneDepth 62.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £411 GBP|Low: £168 GBP|High: £976 GBP|Avg: £495 GBP|+3.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 2, 2026
Retailer 8£168 GBP
Retailer 4£197 GBP
Retailer 16£219 GBP
Retailer 14£365 GBP
Retailer 3£370 GBP
Retailer 9£379 GBP
Retailer 12£391 GBP
Retailer 1£411 GBP
Retailer 2£442 GBP
Retailer 15£535 GBP
Retailer 11£544 GBP
Retailer 7£704 GBP
Retailer 5£705 GBP
Retailer 13£738 GBP
Retailer 6£744 GBP
Retailer 10£879 GBP

40 data points across 16 retailers

26 retailers£197 GBP to £879 GBP

Retailer 1
-
£168 GBP
$225 USD
Price last confirmed 31 days ago
Retailer 2
-
£174 GBP
$233 USD
View
Price last confirmed 25 days ago
A
Retailer 3
-
£197 GBP
$265 USD
View
Final sale: no returns
Retailer 4
-
£203 GBP
$272 USD
View
Price last confirmed 34 days ago
Retailer 5
-
£214 GBP
$287 USD
View
Price last confirmed 34 days ago
Retailer 6
-
£215 GBP
$289 USD
View
Price last confirmed 30 days ago
Retailer 7
-
£219 GBP
$294 USD
View
Price last confirmed 8 days ago
A
Retailer 8
-
£219 GBP
$294 USD
View
A
Retailer 9
-
£365 GBP
€466 EUR
View
A
Retailer 10
-
£370 GBP
$497 USD
View
A
Retailer 11
-
£379 GBP
ZAR 8,208 ZAR
View
A
Retailer 12
-
£391 GBP
A$808 AUD
View
A
Retailer 13
-
£411 GBP
View
A
Retailer 14
-
£442 GBP
$593 USD
View
B+
Retailer 15
-
£535 GBP
A$1,104 AUD
View
B+
Retailer 16
-
£544 GBP
$730 USD
View
Retailer 17
-
£555 GBP
$745 USD
View
Price last confirmed 7 days ago
Retailer 18
-
£655 GBP
A$1,353 AUD
View
Price last confirmed 81 days ago
Retailer 19
-
£696 GBP
$934 USD
View
Price last confirmed 33 days ago
B+
Retailer 20
-
£704 GBP
$945 USD
View
B
Retailer 21
-
£705 GBP
$946 USD
View
B
Retailer 22
-
£705 GBP
$946 USD
View
B
Retailer 23
-
£738 GBP
$990 USD
View
B
Retailer 24
-
£744 GBP
$998 USD
View
B
Retailer 25
-
£879 GBP
View
Most Expensive
Queensmith
LG818689035 · Oct 27
£1,666 GBP
View
Price under review
25 more retailers have this diamond
Prices start from £197 GBPSave up to £682 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
1.38ct Marquise
£197 GBP