CaratHunter
Plans
Princess|Lab Grown|IGI

1.90ct K SI1 Princess Lab Grown Diamond

ID • K/SI1 • IGI LG451056589

Shape and cutting style on the report: Princess cut

Certificate IGI LG451056589

Diamond specifications and retailer prices

From £851 GBP
As of November 6, 2026
Save £2,314 GBP (73%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £3,166 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 1.9ct lab-grown princess diamond

This 1.9ct lab-grown princess sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG451056589 or 451056589. Listed at 10 retailers as of November 5, 2026, with prices from £851 to £3,166, a £2,314 spread on the same certified stone. MOH London lists it at £3,166. 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

1.90
Carat
K
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46.4°
Pavilion angle38.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451056589
Dimensions6.71 × 6.69 × 4.82 mm
L/W Ratio1.00
Culet sizePointed
Cert comments
undefined
Top View
6.71 mm6.69 mm1.90 ctK / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG451056589
Side View
Table 69.5%Crown 46.4°Girdle: MediumPavilion 38.6°Culet: NoneDepth 72.0%

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 6
Current: £3,166 GBP|Low: £818 GBP|High: £3,217 GBP|Avg: £1,555 GBP|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 4£851 GBP
Retailer 5£988 GBP
Retailer 7£988 GBP
Retailer 3£1,118 GBP
Retailer 2£1,374 GBP
Retailer 9£1,419 GBP
Retailer 6£1,570 GBP
Retailer 8£1,947 GBP
MOH London£3,166 GBP

40 data points across 9 retailers

10 retailers£851 GBP to £3,166 GBP

A
Cheapest Retailer
-
£851 GBP
A
Retailer 2
-
£927 GBP
View
A
Retailer 3
-
£988 GBP
View
Retailer 4
-
£988 GBP
View
Price last confirmed 25 days ago
A
Retailer 5
-
£1,118 GBP
View
B+
Retailer 6
-
£1,374 GBP
View
B+
Retailer 7
-
£1,570 GBP
View
B
Retailer 8
-
£1,852 GBP
View
B
Retailer 9
-
£1,947 GBP
View
Most Expensive
B
MOH London
LG451056589 · Nov 5
£3,166 GBP
View
9 more retailers have this diamond
Prices start from £851 GBPSave up to £2,314 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
1.90ct Princess
£851 GBP