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Emerald|Lab Grown|UNKNOWN

0.42ct I SI1 Emerald Lab Grown Diamond

ID • I/SI1 • UNKNOWN 27221221

Certificate UNKNOWN 27221221

Diamond specifications and retailer prices

From $275 AUD
$193 USD
As of October 29, 2026
Save $820 AUD (75%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $1,095 AUD at NZ Jewellers · As of October 31, 2026
View at NZ Jewellers

About this 0.42ct lab-grown emerald diamond

This 0.42ct lab-grown emerald sits in the sub-half-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by UNKNOWN 27221221. Listed at 5 retailers as of October 29, 2026, with prices from $275 to $1,095, a $820 spread on the same certified stone. NZ Jewellers lists it at $1,095. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.42
Carat
I
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryGood
FluorescenceNone
OriginLab Grown
Grading LabUNKNOWN
CertificateUNKNOWN 27221221
Dimensions4.97 × 3.31 × 2.59 mm
L/W Ratio1.50
Top View
4.97 mm3.31 mm0.42 ctI / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateUNKNOWN 27221221
Side View
Table 62.0%CrownGirdlePavilionCuletDepth 78.2%

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: Oct 29
Current: $1,095 AUD|Low: $263 AUD|High: $1,095 AUD|Avg: $488 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 11, 2026
Retailer 2$275 AUD
Retailer 5$319 AUD
Retailer 3$340 AUD
Retailer 4$594 AUD
NZ Jewellers$1,095 AUD

8 data points across 5 retailers

5 retailers$275 AUD to $1,095 AUD

B+
Cheapest Retailer
-
$275 AUD
$193 USD
B+
Retailer 2
-
$319 AUD
$224 USD
View
B+
Retailer 3
-
$340 AUD
$239 USD
View
C
Retailer 4
-
$594 AUD
$417 USD
View
Most Expensive
C
NZ Jewellers
91c34899-c536-4cec-a904-c808352aa523 · Oct 31
$1,095 AUD
$769 USD
View
4 more retailers have this diamond
Prices start from $275 AUDSave up to $820 AUD

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+
0.42ct Emerald
$275 AUD