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Marquise|Lab Grown|IGI

1.97ct D SI1 Marquise Lab Grown Diamond

ID • D/SI1 • IGI LG800664953

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG800664953

Diamond specifications and retailer prices

From £276 GBP
$370 USD
As of October 30, 2026
Save £1,731 GBP (86%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £2,008 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.97ct lab-grown marquise diamond

This 1.97ct 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 LG800664953 or 800664953. Listed at 17 retailers as of October 30, 2026, with prices from £276 to £2,008, a £1,731 spread on the same certified stone. Brilliant Earth lists it at £2,008. 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

1.97
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.6°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG800664953
Dimensions13.56 × 6.78 × 3.85 mm
L/W Ratio2.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
13.56 mm6.78 mm1.97 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG800664953
Side View
Table 66.0%Crown 32.6°Girdle: MED-STKPavilion 39.5°Culet: NoneDepth 56.8%

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: Oct 30
Current: £2,008 GBP|Low: £265 GBP|High: £2,538 GBP|Avg: £741 GBP
Brilliant Earth
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
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Retailer 17
November 1, 2026
Retailer 15£276 GBP
Retailer 16£309 GBP
Retailer 5£320 GBP
Retailer 6£343 GBP
Retailer 17£343 GBP
Retailer 12£383 GBP
Retailer 11£455 GBP
Retailer 8£545 GBP
Retailer 4£547 GBP
Retailer 10£618 GBP
Retailer 7£625 GBP
Retailer 13£1,005 GBP
Retailer 3£1,101 GBP
Retailer 9£1,130 GBP
Retailer 14£1,296 GBP
Retailer 2£1,338 GBP
Brilliant Earth£2,008 GBP

42 data points across 17 retailers

17 retailers£276 GBP to £2,008 GBP

A
Cheapest Retailer
-
£276 GBP
$370 USD
A
Retailer 2
-
£309 GBP
$414 USD
View
Final sale: no returns
A
Retailer 3
-
£320 GBP
$429 USD
View
Retailer 4
-
£343 GBP
$459 USD
View
Price last confirmed 7 days ago
A
Retailer 5
-
£343 GBP
$459 USD
View
Retailer 6
-
£383 GBP
View
Price last confirmed 15 days ago
A
Retailer 7
-
£455 GBP
$610 USD
View
B+
Retailer 8
-
£545 GBP
$730 USD
View
B+
Retailer 9
-
£547 GBP
$733 USD
View
B+
Retailer 10
-
£618 GBP
View
B+
Retailer 11
-
£625 GBP
$838 USD
View
B
Retailer 12
-
£1,005 GBP
$1,346 USD
View
B
Retailer 13
-
£1,101 GBP
$1,475 USD
View
B
Retailer 14
-
£1,130 GBP
$1,514 USD
View
B
Retailer 15
-
£1,296 GBP
$1,736 USD
View
B
Retailer 16
-
£1,338 GBP
View
Most Expensive
B
Brilliant Earth
21067235A · Oct 31
£2,008 GBP
$2,690 USD
View
16 more retailers have this diamond
Prices start from £276 GBPSave up to £1,731 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
1.97ct Marquise
£276 GBP