Princess|Lab Grown|IGI

3.18ct D VS1 Princess Lab Grown Diamond

ID • D/VS1 • IGI LG691569391

Shape and cutting style on the report: Princess cut

Certificate IGI LG691569391

Diamond specifications and retailer prices

From £431 GBP
$574 USD
As of October 29, 2026
Save £1,572 GBP (78%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £2,170 GBP at Rare Carat · As of October 7, 2026
View at Rare Carat

About this 3.18ct lab-grown princess diamond

This 3.18ct lab-grown princess sits in the three to five carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG691569391 or 691569391. Listed at 18 retailers as of October 29, 2026, with a 365% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

3.18
Carat
D
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.9°
Pavilion angle37.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG691569391
Dimensions8.04 × 7.93 × 8.04 mm
L/W Ratio1.01
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.04 mm7.93 mm3.18 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG691569391
Side View
Table 70.0%Crown 41.9°Girdle: MediumPavilion 37.7°Culet: NoneDepth 70.1%

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 29
Current: £2,170 GBP|Low: £281 GBP|High: £2,170 GBP|Avg: £1,075 GBP
Rare Carat
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
Retailer 15
Retailer 16
Retailer 17
October 29, 2026
Retailer 13£431 GBP
Retailer 12£582 GBP
Retailer 17£653 GBP
Retailer 6£656 GBP
Retailer 15£707 GBP
Retailer 14£740 GBP
Retailer 9£926 GBP
Retailer 10£1,036 GBP
Retailer 16£1,063 GBP
Retailer 4£1,135 GBP
Retailer 5£1,358 GBP
Retailer 7£1,400 GBP
Retailer 3£1,503 GBP
Retailer 11£1,645 GBP
Retailer 8£1,697 GBP
Retailer 2£2,003 GBP
Rare Carat£2,170 GBP

33 data points across 17 retailers

18 retailers£431 GBP to £2,003 GBP

A
Retailer 1
-
£345 GBP
$460 USD
Price last confirmed 18 days ago
A
Retailer 2
-
£353 GBP
$470 USD
View
Price last confirmed 37 days ago
A
Retailer 3
-
£428 GBP
$570 USD
View
Price last confirmed 19 days ago
A
Retailer 4
-
£428 GBP
$570 USD
View
Price last confirmed 17 days ago
A
Retailer 5
-
£431 GBP
$574 USD
View
Final sale: no returns
A
Retailer 6
-
£432 GBP
$575 USD
View
Price last confirmed 34 days ago
A
Retailer 7
-
£582 GBP
$775 USD
View
A
Retailer 8
-
£740 GBP
$986 USD
View
B+
Retailer 9
-
£926 GBP
A$1,898 AUD
View
Price last confirmed 32 days ago
B+
Retailer 10
-
£1,036 GBP
ZAR 22,288 ZAR
View
B+
Retailer 11
-
£1,063 GBP
$1,415 USD
View
Price last confirmed 17 days ago
B+
Retailer 12
-
£1,358 GBP
SGD 2,444 SGD
View
Price last confirmed 17 days ago
B+
Retailer 13
-
£1,377 GBP
$1,834 USD
View
Price last confirmed 19 days ago
B+
Retailer 14
-
£1,400 GBP
$1,865 USD
View
Price last confirmed 17 days ago
B
Retailer 15
-
£1,645 GBP
$2,191 USD
View
B
Retailer 16
-
£1,697 GBP
A$3,476 AUD
View
Price last confirmed 22 days ago
B
Retailer 17
-
£2,003 GBP
View
Most Expensive
B
Rare Carat
S13915693KH691 · Oct 7
£2,170 GBP
$2,890 USD
View
Price last confirmed 22 days ago
17 more retailers have this diamond
Prices start from £431 GBPSave up to £1,572 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
3.18ct Princess
£431 GBP