CaratHunter
Plans
Marquise|Lab Grown|IGI

3.14ct D IF Marquise Lab Grown Diamond

EX • D/IF • IGI LG754594327

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG754594327

Diamond specifications and retailer prices

From £2,508 GBP
$3,361 USD
As of October 30, 2026
Save £14,747 GBP (85%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £17,255 GBP at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 3.14ct lab-grown marquise diamond

This 3.14ct lab-grown marquise 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 LG754594327 or 754594327. Listed at 18 retailers as of October 30, 2026, with prices from £2,508 to £17,255, a £14,747 spread on the same certified stone. Do Amore Diamonds lists it at £17,255. 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

3.14
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.1°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754594327
Dimensions14.33 × 7.54 × 4.89 mm
L/W Ratio1.90
Girdle conditionFaceted
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
14.33 mm7.54 mm3.14 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754594327
Side View
Table 61.0%Crown 37.1°Girdle: STK-THKPavilion 40.2°Culet: NoneDepth 64.9%

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 30
Current: £17,255 GBP|Low: £2,508 GBP|High: £18,203 GBP|Avg: £5,985 GBP|-5.2%
Do Amore Diamonds
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
Retailer 18
Retailer 19
November 1, 2026
Retailer 19£2,508 GBP
Retailer 3£2,590 GBP
Retailer 17£2,754 GBP
Retailer 9£2,823 GBP
Retailer 4£3,026 GBP
Retailer 11£3,530 GBP
Retailer 14£3,821 GBP
Retailer 6£4,013 GBP
Retailer 16£4,013 GBP
Retailer 12£4,514 GBP
Retailer 7£5,355 GBP
Retailer 8£5,482 GBP
Retailer 2£6,878 GBP
Retailer 18£7,314 GBP
Retailer 13£7,335 GBP
Retailer 10£7,739 GBP
Retailer 5£7,970 GBP
Retailer 15£12,279 GBP
Do Amore Diamonds£17,255 GBP

32 data points across 19 retailers

18 retailers£2,508 GBP to £17,255 GBP

A
Cheapest Retailer
-
£2,508 GBP
$3,361 USD
A
Retailer 2
-
£2,590 GBP
$3,470 USD
View
A
Retailer 3
-
£2,754 GBP
$3,690 USD
View
A
Retailer 4
-
£2,823 GBP
$3,783 USD
View
A
Retailer 5
-
£3,026 GBP
$4,055 USD
View
Retailer 6
-
£3,530 GBP
$4,730 USD
View
Price last confirmed 9 days ago
A
Retailer 7
-
£3,821 GBP
View
A
Retailer 8
-
£4,013 GBP
$5,377 USD
View
A
Retailer 9
-
£4,013 GBP
$5,377 USD
View
B+
Retailer 10
-
£4,514 GBP
$6,048 USD
View
B+
Retailer 11
-
£5,355 GBP
$7,175 USD
View
B+
Retailer 12
-
£5,482 GBP
€6,995 EUR
View
B+
Retailer 13
-
£6,878 GBP
View
B+
Retailer 14
-
£7,314 GBP
$9,800 USD
View
B+
Retailer 15
-
£7,335 GBP
A$15,120 AUD
View
B+
Retailer 16
-
£7,970 GBP
$10,679 USD
View
B
Retailer 17
-
£12,279 GBP
A$25,311 AUD
View
Most Expensive
B
Do Amore Diamonds
27-31E039256 · Oct 31
£17,255 GBP
$23,120 USD
View
17 more retailers have this diamond
Prices start from £2,508 GBPSave up to £14,747 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
3.14ct Marquise
£2,508 GBP