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Princess|Lab Grown|IGI

1.63ct J SI1 Princess Lab Grown Diamond

ID • J/SI1 • IGI LG436073778

Shape and cutting style on the report: Princess cut

Certificate IGI LG436073778

Diamond specifications and retailer prices

From £687 GBP
$920 USD
As of October 30, 2026
Save £2,694 GBP (80%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £3,381 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.63ct lab-grown princess diamond

This 1.63ct lab-grown princess sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG436073778 or 436073778. Listed at 11 retailers as of October 29, 2026, with prices from £687 to £3,381, a £2,694 spread on the same certified stone. MOH London lists it at £3,381. 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

1.63
Carat
J
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle43.5°
Pavilion angle37.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436073778
Dimensions6.55 × 6.45 × 4.42 mm
L/W Ratio1.02
Culet sizePointed
Cert comments
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Top View
6.55 mm6.45 mm1.63 ctJ / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG436073778
Side View
Table 72.5%Crown 43.5°Girdle: MED-STKPavilion 37.4°Culet: NoneDepth 68.5%

Caratlytics Score

How it works →
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: £3,381 GBP|Low: £687 GBP|High: £3,403 GBP|Avg: £1,671 GBP|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 2£687 GBP
Retailer 3£902 GBP
Retailer 5£1,011 GBP
Retailer 9£1,032 GBP
Retailer 6£1,175 GBP
Retailer 8£1,483 GBP
Retailer 4£1,660 GBP
Retailer 7£2,005 GBP
Retailer 10£2,997 GBP
MOH London£3,381 GBP

13 data points across 10 retailers

11 retailers£687 GBP to £3,381 GBP

A
Cheapest Retailer
-
£687 GBP
$920 USD
B+
Retailer 2
-
£902 GBP
$1,209 USD
View
A
Retailer 3
-
£981 GBP
$1,315 USD
View
B+
Retailer 4
-
£1,011 GBP
$1,354 USD
View
Final sale: no returns
B+
Retailer 5
-
£1,046 GBP
$1,402 USD
View
Retailer 6
-
£1,046 GBP
$1,402 USD
View
Price last confirmed 18 days ago
B+
Retailer 7
-
£1,175 GBP
$1,575 USD
View
B
Retailer 8
-
£1,660 GBP
$2,224 USD
View
B
Retailer 9
-
£1,961 GBP
$2,628 USD
View
B
Retailer 10
-
£2,005 GBP
$2,686 USD
View
Most Expensive
B
MOH London
LG436073778 · Oct 29
£3,381 GBP
View
10 more retailers have this diamond
Prices start from £687 GBPSave up to £2,694 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
1.63ct Princess
£687 GBP