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Emerald|Lab Grown|UNKNOWN

0.51ct H SI1 Emerald Lab Grown Diamond

ID • H/SI1 • UNKNOWN 64342453

Certificate UNKNOWN 64342453

Diamond specifications and retailer prices

From $238 AUD
$167 USD
As of November 1, 2026
Save $708 AUD (75%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $945 AUD at NZ Jewellers · As of October 31, 2026
View at NZ Jewellers

About this 0.51ct lab-grown emerald diamond

This 0.51ct lab-grown emerald sits in the half to three-quarter carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by UNKNOWN 64342453. Listed at 5 retailers as of October 31, 2026, with prices from $238 to $945, a $708 spread on the same certified stone. NZ Jewellers lists it at $945. 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

0.51
Carat
H
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginLab Grown
Grading LabUNKNOWN
CertificateUNKNOWN 64342453
Dimensions5.67 × 3.72 × 2.39 mm
L/W Ratio1.52
Top View
5.67 mm3.72 mm0.51 ctH / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateUNKNOWN 64342453
Side View
Table 64.7%CrownGirdlePavilionCuletDepth 64.2%

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: Nov 1
Current: $945 AUD|Low: $228 AUD|High: $945 AUD|Avg: $425 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 11, 2026
Retailer 2$238 AUD
Retailer 5$275 AUD
Retailer 3$295 AUD
Retailer 4$528 AUD
NZ Jewellers$945 AUD

8 data points across 5 retailers

5 retailers$238 AUD to $945 AUD

A
Cheapest Retailer
-
$238 AUD
$167 USD
B+
Retailer 2
-
$275 AUD
$193 USD
View
B+
Retailer 3
-
$295 AUD
$207 USD
View
B
Retailer 4
-
$528 AUD
$371 USD
View
Most Expensive
C
NZ Jewellers
8f3b0757-3c1e-4fcd-8619-9208084ba563 · Oct 31
$945 AUD
$664 USD
View
4 more retailers have this diamond
Prices start from $238 AUDSave up to $708 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.

A
0.51ct Emerald
$238 AUD