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Oval|Lab Grown|UNKNOWN

0.30ct D SI1 Oval Lab Grown Diamond

ID • D/SI1 • UNKNOWN 40217751

Certificate UNKNOWN 40217751

Diamond specifications and retailer prices

From $246 AUD
$173 USD
As of November 1, 2026
Save $298 AUD (55%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $982 AUD at NZ Jewellers · As of October 31, 2026
View at NZ Jewellers

About this 0.3ct lab-grown oval diamond

This 0.3ct lab-grown oval sits in the sub-half-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by UNKNOWN 40217751. Listed at 5 retailers as of November 1, 2026, with a 121% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

0.30
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginLab Grown
Grading LabUNKNOWN
CertificateUNKNOWN 40217751
Dimensions5.52 × 3.74 × 2.37 mm
L/W Ratio1.48
Top View
5.52 mm3.74 mm0.30 ctD / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateUNKNOWN 40217751
Side View
Table 62.1%CrownGirdlePavilionCuletDepth 63.3%

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: $246 AUD|Low: $236 AUD|High: $544 AUD|Avg: $364 AUD|+4.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
October 10, 2026
Retailer 1$246 AUD
Retailer 2$306 AUD
Retailer 4$306 AUD
Retailer 3$544 AUD

4 data points across 4 retailers

5 retailers$246 AUD to $544 AUD

A
Cheapest Retailer
-
$246 AUD
$173 USD
B+
Retailer 2
-
$286 AUD
$201 USD
View
B
Retailer 3
-
$306 AUD
$215 USD
View
C
Retailer 4
-
$544 AUD
$382 USD
View
Most Expensive
NZ Jewellers
b5a05799-94f3-45db-ba49-4b6eb5baee00 · Oct 31
$982 AUD
$690 USD
View
Price under review
4 more retailers have this diamond
Prices start from $246 AUDSave up to $298 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
0.30ct Oval
$246 AUD