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Marquise|Lab Grown|IGI

3.51ct G VS1 Marquise Lab Grown Diamond

EX • G/VS1 • IGI LG747588136

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG747588136

Diamond specifications and retailer prices

From £512 GBP
$687 USD
As of November 2, 2026
Save £4,704 GBP (90%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: £5,216 GBP at Do Amore Diamonds · As of November 2, 2026
View at Do Amore Diamonds

About this 3.51ct lab-grown marquise diamond

This 3.51ct lab-grown marquise sits in the three to five carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG747588136 or 747588136. Listed at 25 retailers as of November 2, 2026, with prices from £512 to £5,216, a £4,704 spread on the same certified stone. Do Amore Diamonds lists it at £5,216. 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
G
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.1°
Pavilion angle38.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG747588136
Dimensions14.76 × 7.80 × 4.99 mm
L/W Ratio1.89
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
14.76 mm7.80 mm3.51 ctG / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG747588136
Side View
Table 59.0%Crown 37.1°Girdle: STK-THKPavilion 38.7°Culet: NoneDepth 64.0%

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: Nov 2
Current: £4,546 GBP|Low: £492 GBP|High: £4,546 GBP|Avg: £1,592 GBP
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 2, 2026
Retailer 4£492 GBP
Retailer 6£573 GBP
Retailer 3£594 GBP
Retailer 19£594 GBP
Retailer 18£689 GBP
Retailer 8£735 GBP
Retailer 7£839 GBP
Retailer 5£890 GBP
Retailer 2£1,005 GBP
Retailer 17£1,464 GBP
Retailer 14£1,481 GBP
Retailer 15£1,523 GBP
Retailer 16£1,975 GBP
Retailer 9£2,032 GBP
Retailer 10£2,033 GBP
Retailer 11£2,346 GBP
Retailer 12£2,459 GBP
Retailer 13£4,113 GBP
Do Amore Diamonds£4,546 GBP

43 data points across 19 retailers

25 retailers£512 GBP to £5,216 GBP

Retailer 1
-
£492 GBP
$660 USD
Price last confirmed 31 days ago
A
Retailer 2
-
£512 GBP
$687 USD
View
Retailer 3
-
£557 GBP
$748 USD
View
Price last confirmed 34 days ago
A
Retailer 4
-
£573 GBP
$769 USD
View
Final sale: no returns
Retailer 5
-
£594 GBP
$797 USD
View
Price last confirmed 17 days ago
Retailer 6
-
£594 GBP
$797 USD
View
Price last confirmed 30 days ago
A
Retailer 7
-
£594 GBP
$797 USD
View
A
Retailer 8
-
£689 GBP
$925 USD
View
A
Retailer 9
-
£735 GBP
$986 USD
View
A
Retailer 10
-
£839 GBP
$1,126 USD
View
A
Retailer 11
-
£890 GBP
$1,194 USD
View
A
Retailer 12
-
£1,005 GBP
View
B+
Retailer 13
-
£1,464 GBP
$1,964 USD
View
B+
Retailer 14
-
£1,481 GBP
A$3,058 AUD
View
B+
Retailer 15
-
£1,523 GBP
ZAR 33,014 ZAR
View
Retailer 16
-
£1,844 GBP
$2,475 USD
View
Price last confirmed 33 days ago
B+
Retailer 17
-
£1,844 GBP
$2,475 USD
View
B+
Retailer 18
-
£1,975 GBP
$2,650 USD
View
B
Retailer 19
-
£2,032 GBP
$2,727 USD
View
B
Retailer 20
-
£2,033 GBP
View
B
Retailer 21
-
£2,346 GBP
$3,148 USD
View
B
Retailer 22
-
£2,459 GBP
View
B
Retailer 23
-
£4,113 GBP
$5,520 USD
View
B
Retailer 24
-
£4,546 GBP
$6,100 USD
View
Most Expensive
B
Do Amore Diamonds
23-747588136 · Nov 2
£5,216 GBP
$7,000 USD
View
24 more retailers have this diamond
Prices start from £512 GBPSave up to £4,704 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 Marquise
£512 GBP