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Princess|Lab Grown|IGI

3.51ct D IF Princess Lab Grown Diamond

ID • D/IF • IGI LG831645415

Shape and cutting style on the report: Princess cut

Certificate IGI LG831645415

Diamond specifications and retailer prices

From £3,243 GBP
$4,345 USD
As of October 31, 2026
Save £11,741 GBP (78%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £14,984 GBP at Wholesale Diamonds Direct · As of October 27, 2026
View at Wholesale Diamonds Direct

About this 3.51ct lab-grown princess diamond

This 3.51ct lab-grown princess sits in the three to five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG831645415 or 831645415. Listed at 11 retailers as of October 27, 2026, with prices from £3,243 to £14,984, a £11,741 spread on the same certified stone. Wholesale Diamonds Direct lists it at £14,984. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

3.51
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.8°
Pavilion angle38.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831645415
Dimensions8.41 × 8.33 × 5.92 mm
L/W Ratio1.01
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
8.41 mm8.33 mm3.51 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831645415
Side View
Table 70.0%Crown 40.8°Girdle: MediumPavilion 38.8°Culet: NoneDepth 71.1%

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: Oct 31
Current: £3,243 GBP|Low: £3,243 GBP|High: £22,129 GBP|Avg: £11,098 GBP|-43.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Wholesale Diamonds Direct
October 31, 2026
Retailer 1£3,243 GBP
Retailer 4£3,477 GBP
Retailer 6£3,759 GBP
Retailer 8£6,557 GBP
Retailer 3£7,060 GBP
Retailer 2£8,551 GBP
Retailer 9£9,140 GBP
Retailer 7£9,888 GBP
Retailer 10£11,023 GBP
Retailer 5£11,031 GBP
Wholesale Diamonds Direct£14,984 GBP

19 data points across 11 retailers

11 retailers£3,243 GBP to £14,984 GBP

A
Cheapest Retailer
-
£3,243 GBP
$4,345 USD
A
Retailer 2
-
£3,477 GBP
HK$36,400 HKD
View
A
Retailer 3
-
£3,759 GBP
View
B+
Retailer 4
-
£6,557 GBP
ZAR 141,936 ZAR
View
B+
Retailer 5
-
£7,060 GBP
$9,460 USD
View
B
Retailer 6
-
£8,551 GBP
$11,458 USD
View
B+
Retailer 7
-
£9,140 GBP
€11,663 EUR
View
B+
Retailer 8
-
£9,888 GBP
$13,249 USD
View
B
Retailer 9
-
£11,023 GBP
View
B
Retailer 10
-
£11,031 GBP
$14,780 USD
View
Most Expensive
B
Wholesale Diamonds Direct
496695853 · Oct 27
£14,984 GBP
$20,077 USD
View
10 more retailers have this diamond
Prices start from £3,243 GBPSave up to £11,741 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
3.51ct Princess
£3,243 GBP