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Princess|Lab Grown|GCAL

1.59ct F SI1 Princess Lab Grown Diamond

VG • F/SI1 • GCAL 320120354

Shape and cutting style on the report: Princess

Certificate GCAL 320120354

Diamond specifications and retailer prices

From £283 GBP
$380 USD
As of November 1, 2026
Save £563 GBP (67%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £846 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.59ct lab-grown princess diamond

This 1.59ct lab-grown princess sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by GCAL 320120354. Listed at 8 retailers as of October 29, 2026, with prices from £283 to £846, a £563 spread on the same certified stone. MOH London lists it at £846. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.59
Carat
F
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle42°
Pavilion angle38°
OriginLab Grown
Grading LabGCAL
CertificateGCAL 320120354
Dimensions6.32 × 6.28 × 4.51 mm
L/W Ratio1.01
Culet sizeNone
Top View
6.32 mm6.28 mm1.59 ctF / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGCAL 320120354
Side View
Table 67.0%Crown 42°Girdle: MED-STKPavilion 38°Culet: NoneDepth 71.9%

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 1
Current: £846 GBP|Low: £238 GBP|High: £846 GBP|Avg: £522 GBP|+7.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 3, 2026
Retailer 7£283 GBP
Retailer 5£294 GBP
Retailer 2£342 GBP
Retailer 3£508 GBP
Retailer 4£595 GBP
Retailer 6£702 GBP
Retailer 8£803 GBP
MOH London£846 GBP

43 data points across 8 retailers

8 retailers£283 GBP to £846 GBP

B+
Cheapest Retailer
-
£283 GBP
$380 USD
A
Retailer 2
-
£294 GBP
$394 USD
View
B+
Retailer 3
-
£342 GBP
View
B
Retailer 4
-
£508 GBP
View
B
Retailer 5
-
£595 GBP
CA$1,109 CAD
View
B
Retailer 6
-
£702 GBP
$942 USD
View
B
Retailer 7
-
£803 GBP
$1,078 USD
View
Most Expensive
B
MOH London
320120354 · Oct 29
£846 GBP
View
7 more retailers have this diamond
Prices start from £283 GBPSave up to £563 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
1.59ct Princess
£283 GBP