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Marquise|Lab Grown|IGI

1.30ct D VS1 Marquise Lab Grown Diamond

EX • D/VS1 • IGI LG851605435

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG851605435

Diamond specifications and retailer prices

From £188 GBP
As of November 4, 2026
Save £824 GBP (81%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £1,411 GBP at Queensmith · As of October 28, 2026
View at Queensmith

About this 1.3ct lab-grown marquise diamond

This 1.3ct 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 LG851605435 or 851605435. Listed at 21 retailers as of November 4, 2026, with a 438% 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

1.30
Carat
D
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.1°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG851605435
Dimensions11.37 × 5.72 × 3.55 mm
L/W Ratio1.99
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.37 mm5.72 mm1.30 ctD / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG851605435
Side View
Table 62.0%Crown 33.1°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 62.1%

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 4
Current: £1,411 GBP|Low: £188 GBP|High: £1,411 GBP|Avg: £547 GBP
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
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Retailer 12
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Retailer 21
November 4, 2026
Retailer 12£188 GBP
Retailer 7£210 GBP
Retailer 9£219 GBP
Retailer 3£233 GBP
Retailer 2£311 GBP
Retailer 8£315 GBP
Retailer 16£352 GBP
Retailer 11£402 GBP
Retailer 19£403 GBP
Retailer 15£441 GBP
Retailer 4£478 GBP
Retailer 17£572 GBP
Retailer 13£580 GBP
Retailer 18£597 GBP
Retailer 5£646 GBP
Retailer 6£750 GBP
Retailer 21£770 GBP
Retailer 14£788 GBP
Retailer 20£936 GBP
Retailer 10£1,012 GBP
Queensmith£1,411 GBP

10 data points across 21 retailers

21 retailers£188 GBP to £1,012 GBP

A
Cheapest Retailer
-
£188 GBP
A
Retailer 2
-
£210 GBP
View
Final sale: no returns
A
Retailer 3
-
£219 GBP
View
A
Retailer 4
-
£233 GBP
View
A
Retailer 5
-
£311 GBP
View
A
Retailer 6
-
£315 GBP
View
A
Retailer 7
-
£352 GBP
View
A
Retailer 8
-
£402 GBP
View
A
Retailer 9
-
£403 GBP
View
A
Retailer 10
-
£441 GBP
View
B+
Retailer 11
-
£478 GBP
View
B+
Retailer 12
-
£572 GBP
View
B+
Retailer 13
-
£580 GBP
View
B+
Retailer 14
-
£597 GBP
View
B
Retailer 15
-
£646 GBP
View
B
Retailer 16
-
£750 GBP
View
B
Retailer 17
-
£770 GBP
View
B
Retailer 18
-
£788 GBP
View
B
Retailer 19
-
£936 GBP
View
B
Retailer 20
-
£1,012 GBP
View
Most Expensive
Queensmith
LG851605435 · Oct 28
£1,411 GBP
View
Price last confirmed 7 days ago
20 more retailers have this diamond
Prices start from £188 GBPSave up to £824 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
1.30ct Marquise
£188 GBP