Marquise|Lab Grown|IGI

3.51ct G VS1 Marquise Lab Grown Diamond

ID • G/VS1

Diamond specifications and retailer prices

From $656 USD
As of October 25, 2026
Save $1,811 USD (73%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $3,938 USD at Helzberg Diamonds · As of September 27, 2026
View at Helzberg 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. Listed at 10 retailers as of October 25, 2026, with a 276% 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

3.51
Carat
G
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
Dimensions15.32 × 7.91 × 4.99 mm
L/W Ratio1.94
Top View
15.32 mm7.91 mm3.51 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI
Side View
Table 60.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 63.1%

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 25
Current: $3,938 USD|Low: $529 USD|High: $4,846 USD|Avg: $2,212 USD|-18.7%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 24, 2026
Retailer 5$529 USD
Retailer 2$593 USD
Retailer 4$656 USD
Retailer 6$1,030 USD
Retailer 3$1,906 USD
Retailer 7$2,467 USD
Retailer 8$2,645 USD
Helzberg Diamonds$3,938 USD

9 data points across 8 retailers

10 retailers$656 USD to $2,467 USD

Retailer 1
-
$529 USD
Price last confirmed 24 days ago
Retailer 2
-
$529 USD
View
Price last confirmed 9 days ago
Retailer 3
-
$593 USD
View
Price last confirmed 7 days ago
Retailer 4
-
$656 USD
View
Price last confirmed 24 days ago
A
Retailer 5
-
$656 USD
View
Retailer 6
-
$1,030 USD
View
Price last confirmed 7 days ago
Retailer 7
-
$1,906 USD
View
Price last confirmed 24 days ago
Retailer 8
-
$1,906 USD
View
Price last confirmed 7 days ago
B
Retailer 9
-
$2,467 USD
View
Most Expensive
Helzberg Diamonds
ZXZOHOMLJHGL · Sep 27
$3,938 USD
View
Price last confirmed 35 days ago
9 more retailers have this diamond
Prices start from $656 USDSave up to $1,811 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
$656 USD