CaratHunter
Plans
Marquise|Lab Grown|IGI

1.97ct D SI1 Marquise Lab Grown Diamond

ID • D/SI1 • IGI LG799606499

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG799606499

Diamond specifications and retailer prices

From £276 GBP
$370 USD
As of October 30, 2026
Save £1,127 GBP (80%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £1,403 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 LG799606499 or 799606499. Listed at 14 retailers as of October 30, 2026, with prices from £276 to £1,403, a £1,127 spread on the same certified stone. Brilliant Earth lists it at £1,403. 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 angle33.1°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG799606499
Dimensions13.45 × 6.57 × 3.93 mm
L/W Ratio2.05
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
13.45 mm6.57 mm1.97 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG799606499
Side View
Table 63.0%Crown 33.1°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 59.8%

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: Oct 30
Current: £1,403 GBP|Low: £265 GBP|High: £2,709 GBP|Avg: £700 GBP|-30.1%
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
November 1, 2026
Retailer 11£276 GBP
Retailer 3£320 GBP
Retailer 4£343 GBP
Retailer 12£343 GBP
Retailer 9£383 GBP
Retailer 8£455 GBP
Retailer 6£545 GBP
Retailer 14£547 GBP
Retailer 7£618 GBP
Retailer 5£625 GBP
Retailer 10£1,005 GBP
Retailer 13£1,101 GBP
Retailer 2£1,338 GBP
Brilliant Earth£1,403 GBP

43 data points across 14 retailers

14 retailers£276 GBP to £1,403 GBP

A
Cheapest Retailer
-
£276 GBP
$370 USD
A
Retailer 2
-
£320 GBP
$429 USD
View
Retailer 3
-
£343 GBP
$459 USD
View
Price last confirmed 7 days ago
A
Retailer 4
-
£343 GBP
$459 USD
View
Retailer 5
-
£383 GBP
View
Price last confirmed 15 days ago
A
Retailer 6
-
£455 GBP
$610 USD
View
B+
Retailer 7
-
£545 GBP
$730 USD
View
B+
Retailer 8
-
£547 GBP
$733 USD
View
B+
Retailer 9
-
£618 GBP
View
B+
Retailer 10
-
£625 GBP
$838 USD
View
B
Retailer 11
-
£1,005 GBP
$1,346 USD
View
B
Retailer 12
-
£1,101 GBP
$1,475 USD
View
B
Retailer 13
-
£1,338 GBP
View
Most Expensive
B
Brilliant Earth
21067453A · Oct 31
£1,403 GBP
$1,880 USD
View
13 more retailers have this diamond
Prices start from £276 GBPSave up to £1,127 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