Emerald|Lab Grown|UNKNOWN

0.40ct J VS2 Emerald Lab Grown Diamond

ID • J/VS2 • UNKNOWN 27257257

Certificate UNKNOWN 27257257

Diamond specifications and retailer prices

From $185 USD
As of October 27, 2026
Save $553 USD (75%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $738 USD at NZ Jewellers · As of October 28, 2026
View at NZ Jewellers

About this 0.4ct lab-grown emerald diamond

This 0.4ct lab-grown emerald sits in the sub-half-carat band, graded J colour (near-colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by UNKNOWN 27257257. Listed at 5 retailers as of October 27, 2026, with prices from $185 to $738, a $553 spread on the same certified stone. NZ Jewellers lists it at $738. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

0.40
Carat
J
Color
VS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryGood
FluorescenceNone
OriginLab Grown
Grading LabUNKNOWN
CertificateUNKNOWN 27257257
Dimensions4.87 × 3.42 × 2.37 mm
L/W Ratio1.42
Top View
4.87 mm3.42 mm0.40 ctJ / VS2
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateUNKNOWN 27257257
Side View
Table 77.2%CrownGirdlePavilionCuletDepth 69.2%

Caratlytics Score

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

Price History

Last verified: Oct 27
Current: $738 USD|Low: $178 USD|High: $738 USD|Avg: $330 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 11, 2026
Retailer 2$185 USD
Retailer 5$215 USD
Retailer 3$229 USD
Retailer 4$404 USD
NZ Jewellers$738 USD

8 data points across 5 retailers

5 retailers$185 USD to $738 USD

B+
Cheapest Retailer
-
$185 USD
B+
Retailer 2
-
$215 USD
View
B+
Retailer 3
-
$229 USD
View
B
Retailer 4
-
$404 USD
View
Most Expensive
C
NZ Jewellers
afbbeee8-d47f-4e3e-957b-59fc7e50d8fe · Oct 28
$738 USD
View
4 more retailers have this diamond
Prices start from $185 USDSave up to $553 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+
0.40ct Emerald
$185 USD