Marquise|Lab Grown|UNKNOWN

0.51ct G VS2 Marquise Lab Grown Diamond

ID • G/VS2 • UNKNOWN 501491265

Certificate UNKNOWN 501491265

Diamond specifications and retailer prices

From $351 USD
As of November 2, 2026
Save $348 USD (50%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $1,401 USD at NZ Jewellers · As of October 31, 2026
View at NZ Jewellers

About this 0.51ct lab-grown marquise diamond

This 0.51ct lab-grown marquise sits in the half to three-quarter carat band, graded G colour (near-colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by UNKNOWN 501491265. Listed at 5 retailers as of November 1, 2026, with a 99% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

0.51
Carat
G
Color
VS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginLab Grown
Grading LabUNKNOWN
CertificateUNKNOWN 501491265
Dimensions8.60 × 4.09 × 2.38 mm
L/W Ratio2.10
Top View
8.60 mm4.09 mm0.51 ctG / VS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateUNKNOWN 501491265
Side View
Table 62.6%CrownGirdlePavilionCuletDepth 58.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $1,401 USD|Low: $337 USD|High: $1,401 USD|Avg: $630 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 8, 2026
Retailer 2$351 USD
Retailer 5$408 USD
Retailer 3$436 USD
Retailer 4$699 USD
NZ Jewellers$1,401 USD

6 data points across 5 retailers

5 retailers$351 USD to $699 USD

B+
Cheapest Retailer
-
$351 USD
B
Retailer 2
-
$408 USD
View
B
Retailer 3
-
$436 USD
View
B
Retailer 4
-
$699 USD
View
Most Expensive
NZ Jewellers
d8e2389a-e283-4678-98ac-f040df721411 · Oct 31
$1,401 USD
View
Price under review
4 more retailers have this diamond
Prices start from $351 USDSave up to $348 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.

B+
0.51ct Marquise
$351 USD