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Princess|Lab Grown|IGI

3.00ct G SI1 Princess Lab Grown Diamond

GD • G/SI1 • IGI LG512231591

Shape and cutting style on the report: Princess cut

Certificate IGI LG512231591

Diamond specifications and retailer prices

From £413 GBP
As of November 6, 2026
Save £2,507 GBP (86%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £2,920 GBP at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 3ct lab-grown princess diamond

This 3ct lab-grown princess sits in the three to five carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG512231591 or 512231591. Listed at 15 retailers as of November 4, 2026, with prices from £413 to £2,920, a £2,507 spread on the same certified stone. Brilliant Earth lists it at £2,920. 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

3.00
Carat
G
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle49.9°
Pavilion angle39.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG512231591
Dimensions7.72 × 7.50 × 5.71 mm
L/W Ratio1.03
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.72 mm7.50 mm3.00 ctG / SI1
OriginLab Grown
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG512231591
Side View
Table 73.5%Crown 49.9°Girdle: Slightly ThickPavilion 39.1°Culet: NoneDepth 76.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £2,920 GBP|Low: £395 GBP|High: £2,920 GBP|Avg: £923 GBP
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 6, 2026
Retailer 11£413 GBP
Retailer 4£462 GBP
Retailer 6£462 GBP
Retailer 3£512 GBP
Retailer 12£512 GBP
Retailer 7£583 GBP
Retailer 9£613 GBP
Retailer 5£716 GBP
Retailer 2£791 GBP
Retailer 13£791 GBP
Retailer 10£1,321 GBP
Retailer 14£1,347 GBP
Retailer 8£2,217 GBP
Brilliant Earth£2,920 GBP

45 data points across 14 retailers

15 retailers£413 GBP to £2,920 GBP

B+
Cheapest Retailer
-
£413 GBP
B+
Retailer 2
-
£462 GBP
View
Final sale: no returns
B+
Retailer 3
-
£462 GBP
View
Retailer 4
-
£512 GBP
View
Price last confirmed 21 days ago
B+
Retailer 5
-
£512 GBP
View
B+
Retailer 6
-
£583 GBP
View
B+
Retailer 7
-
£613 GBP
View
B+
Retailer 8
-
£716 GBP
View
B+
Retailer 9
-
£791 GBP
View
B+
Retailer 10
-
£791 GBP
View
B
Retailer 11
-
£1,321 GBP
View
B
Retailer 12
-
£1,347 GBP
View
B
Retailer 13
-
£1,560 GBP
View
B
Retailer 14
-
£2,217 GBP
View
Most Expensive
C
Brilliant Earth
17972394A · Nov 4
£2,920 GBP
$3,930 USD
View
14 more retailers have this diamond
Prices start from £413 GBPSave up to £2,507 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.

B+
3.00ct Princess
£413 GBP