Marquise|Lab Grown|IGI

3.51ct G VS1 Marquise Lab Grown Diamond

ID • G/VS1 • IGI LG818653105

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG818653105

Diamond specifications and retailer prices

From $952 USD
As of October 26, 2026
Save $3,748 USD (80%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $4,700 USD at Do Amore Diamonds · As of October 26, 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 LG818653105 or 818653105. Listed at 13 retailers as of October 26, 2026, with prices from $952 to $4,700, a $3,748 spread on the same certified stone. Do Amore Diamonds lists it at $4,700. 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
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818653105
Dimensions15.32 × 7.91 × 4.99 mm
L/W Ratio1.94
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
15.32 mm7.91 mm3.51 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818653105
Side View
Table 60.0%Crown 34.4°Girdle: STK-THKPavilion 40.5°Culet: NoneDepth 63.1%

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 26
Current: $4,700 USD|Low: $790 USD|High: $4,700 USD|Avg: $2,030 USD
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
October 27, 2026
Retailer 7$790 USD
Retailer 13$806 USD
Retailer 4$952 USD
Retailer 3$1,015 USD
Retailer 8$1,084 USD
Retailer 6$1,118 USD
Retailer 10$1,559 USD
Retailer 11$1,694 USD
Retailer 12$2,433 USD
Retailer 5$2,462 USD
Retailer 9$2,580 USD
Retailer 2$3,540 USD
Do Amore Diamonds$4,700 USD

22 data points across 13 retailers

13 retailers$952 USD to $4,700 USD

Retailer 1
-
$790 USD
Price last confirmed 6 days ago
Retailer 2
-
$806 USD
£635 GBP
View
Price last confirmed 10 days ago
A
Retailer 3
-
$952 USD
View
Retailer 4
-
$1,015 USD
View
Price last confirmed 9 days ago
Retailer 5
-
$1,084 USD
€1,032 EUR
View
Price last confirmed 7 days ago
A
Retailer 6
-
$1,118 USD
£881 GBP
View
Retailer 7
-
$1,559 USD
ZAR 25,186 ZAR
View
Price last confirmed 8 days ago
B+
Retailer 8
-
$1,694 USD
View
B+
Retailer 9
-
$2,433 USD
View
B+
Retailer 10
-
$2,462 USD
View
Retailer 11
-
$2,580 USD
View
Price last confirmed 7 days ago
B
Retailer 12
-
$3,540 USD
View
Most Expensive
B
Do Amore Diamonds
27-8E1241D7A · Oct 26
$4,700 USD
View
12 more retailers have this diamond
Prices start from $952 USDSave up to $3,748 USD

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
$952 USD