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Marquise|Lab Grown|IGI

3.51ct G VS1 Marquise Lab Grown Diamond

EX • G/VS1 • IGI LG735596581

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG735596581

Diamond specifications and retailer prices

From £495 GBP
$664 USD
As of November 2, 2026
Save £3,894 GBP (89%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: £4,389 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 LG735596581 or 735596581. Listed at 25 retailers as of November 2, 2026, with prices from £495 to £4,389, a £3,894 spread on the same certified stone. Do Amore Diamonds lists it at £4,389. 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 angle34.3°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG735596581
Dimensions15.47 × 8.03 × 5.05 mm
L/W Ratio1.93
Girdle conditionFaceted
Culet sizePointed
Top View
15.47 mm8.03 mm3.51 ctG / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG735596581
Side View
Table 57.0%Crown 34.3°Girdle: STK-THKPavilion 40.6°Culet: NoneDepth 62.9%

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: Nov 2
Current: £4,389 GBP|Low: £475 GBP|High: £4,389 GBP|Avg: £1,572 GBP
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
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Retailer 8
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Retailer 20
November 2, 2026
Retailer 4£475 GBP
Retailer 7£553 GBP
Retailer 3£574 GBP
Retailer 20£574 GBP
Retailer 19£708 GBP
Retailer 9£730 GBP
Retailer 8£811 GBP
Retailer 6£870 GBP
Retailer 2£1,016 GBP
Retailer 15£1,430 GBP
Retailer 18£1,465 GBP
Retailer 16£1,470 GBP
Retailer 5£1,956 GBP
Retailer 11£1,965 GBP
Retailer 17£1,967 GBP
Retailer 10£1,976 GBP
Retailer 12£2,266 GBP
Retailer 13£2,486 GBP
Retailer 14£4,113 GBP
Do Amore Diamonds£4,389 GBP

42 data points across 20 retailers

25 retailers£495 GBP to £4,389 GBP

Retailer 1
-
£475 GBP
$637 USD
Price last confirmed 31 days ago
A
Retailer 2
-
£495 GBP
$664 USD
View
Retailer 3
-
£538 GBP
$722 USD
View
Price last confirmed 34 days ago
A
Retailer 4
-
£553 GBP
$742 USD
View
Final sale: no returns
Retailer 5
-
£574 GBP
$770 USD
View
Price last confirmed 17 days ago
Retailer 6
-
£574 GBP
$770 USD
View
Price last confirmed 30 days ago
A
Retailer 7
-
£574 GBP
$770 USD
View
A
Retailer 8
-
£708 GBP
$950 USD
View
A
Retailer 9
-
£730 GBP
$980 USD
View
A
Retailer 10
-
£811 GBP
$1,088 USD
View
A
Retailer 11
-
£870 GBP
$1,168 USD
View
A
Retailer 12
-
£1,016 GBP
View
B+
Retailer 13
-
£1,430 GBP
A$2,952 AUD
View
B+
Retailer 14
-
£1,465 GBP
$1,966 USD
View
B+
Retailer 15
-
£1,470 GBP
ZAR 31,872 ZAR
View
Retailer 16
-
£1,780 GBP
$2,389 USD
View
Price last confirmed 33 days ago
B+
Retailer 17
-
£1,780 GBP
$2,389 USD
View
B+
Retailer 18
-
£1,956 GBP
$2,625 USD
View
B
Retailer 19
-
£1,965 GBP
View
B+
Retailer 20
-
£1,967 GBP
$2,640 USD
View
B
Retailer 21
-
£1,976 GBP
$2,652 USD
View
B
Retailer 22
-
£2,266 GBP
$3,041 USD
View
B
Retailer 23
-
£2,486 GBP
View
B
Retailer 24
-
£4,113 GBP
$5,520 USD
View
Most Expensive
B
Do Amore Diamonds
27-4DDD2B3F8 · Nov 2
£4,389 GBP
$5,890 USD
View
24 more retailers have this diamond
Prices start from £495 GBPSave up to £3,894 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
£495 GBP