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Marquise|Lab Grown|IGI

1.99ct D SI1 Marquise Lab Grown Diamond

ID • D/SI1 • IGI LG852634649

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG852634649

Diamond specifications and retailer prices

From £204 GBP
As of November 6, 2026
Save £1,208 GBP (86%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £1,412 GBP at Brilliant Earth · As of November 5, 2026
View at Brilliant Earth

About this 1.99ct lab-grown marquise diamond

This 1.99ct lab-grown marquise sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG852634649 or 852634649. Listed at 12 retailers as of November 5, 2026, with prices from £204 to £1,412, a £1,208 spread on the same certified stone. Brilliant Earth lists it at £1,412. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.99
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG852634649
Dimensions13.08 × 6.49 × 4.07 mm
L/W Ratio2.02
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
13.08 mm6.49 mm1.99 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG852634649
Side View
Table 61.0%Crown 39°Girdle: MED-STKPavilion 39.8°Culet: NoneDepth 62.7%

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 6
Current: £813 GBP|Low: £204 GBP|High: £1,010 GBP|Avg: £473 GBP
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 4£204 GBP
Retailer 10£228 GBP
Retailer 5£236 GBP
Retailer 6£279 GBP
Retailer 9£285 GBP
Retailer 8£371 GBP
Retailer 3£418 GBP
Retailer 7£440 GBP
Retailer 11£811 GBP
Retailer 1£813 GBP
Retailer 2£1,010 GBP

3 data points across 11 retailers

12 retailers£204 GBP to £1,412 GBP

Cheapest Retailer
-
£204 GBP
A
Retailer 2
-
£228 GBP
View
Final sale: no returns
A
Retailer 3
-
£236 GBP
View
A
Retailer 4
-
£279 GBP
View
A
Retailer 5
-
£285 GBP
View
A
Retailer 6
-
£371 GBP
View
B+
Retailer 7
-
£418 GBP
View
A
Retailer 8
-
£440 GBP
View
B+
Retailer 9
-
£811 GBP
View
Retailer 10
-
£813 GBP
View
B
Retailer 11
-
£1,010 GBP
View
Most Expensive
B
Brilliant Earth
22517845A · Nov 5
£1,412 GBP
$1,900 USD
View
11 more retailers have this diamond
Prices start from £204 GBPSave up to £1,208 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
1.99ct Marquise
£204 GBP