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Princess|Lab Grown|IGI

1.21ct E IF Princess Lab Grown Diamond

VG • E/IF • IGI LG618403171

Shape and cutting style on the report: Princess cut

Certificate IGI LG618403171

Diamond specifications and retailer prices

From £566 GBP
$759 USD
As of October 28, 2026
Save £2,083 GBP (79%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £2,649 GBP at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.21ct lab-grown princess diamond

This 1.21ct lab-grown princess sits in the classic one-carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG618403171 or 618403171. Listed at 3 retailers as of October 28, 2026, with prices from £566 to £2,649, a £2,083 spread on the same certified stone. Do Amore Diamonds lists it at £2,649. 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

1.21
Carat
E
Colour
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.8°
Pavilion angle37.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG618403171
Dimensions5.77 × 5.75 × 4.08 mm
L/W Ratio1.00
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
5.77 mm5.75 mm1.21 ctE / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG618403171
Side View
Table 69.0%Crown 44.8°Girdle: MediumPavilion 37.3°Culet: NoneDepth 71.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 28
Current: £2,649 GBP|Low: £561 GBP|High: £3,306 GBP|Avg: £1,841 GBP|-19.9%
Do Amore Diamonds
Retailer 2
Retailer 3
September 15, 2026
Retailer 2£566 GBP
Retailer 3£1,322 GBP
Do Amore Diamonds£2,649 GBP

20 data points across 3 retailers

3 retailers£566 GBP to £2,649 GBP

A
Cheapest Retailer
-
£566 GBP
$759 USD
B
Retailer 2
-
£1,322 GBP
CA$2,460 CAD
View
Most Expensive
B
Do Amore Diamonds
16-500092170 · Oct 29
£2,649 GBP
$3,550 USD
View
2 more retailers have this diamond
Prices start from £566 GBPSave up to £2,083 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
1.21ct Princess
£566 GBP