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Round|Lab Grown|UNKNOWN

0.31ct H SI2 Round Lab Grown Diamond

EX • H/SI2 • UNKNOWN 45165660

Certificate UNKNOWN 45165660

Diamond specifications and retailer prices

From $183 CAD
$131 USD
As of October 29, 2026
Save $547 CAD (75%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $731 CAD at NZ Jewellers · As of October 27, 2026
View at NZ Jewellers

About this 0.31ct lab-grown round diamond

This 0.31ct lab-grown round sits in the sub-half-carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by UNKNOWN 45165660. Listed at 5 retailers as of October 27, 2026, with prices from $183 to $731, a $547 spread on the same certified stone. NZ Jewellers lists it at $731. 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

0.31
Carat
H
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabUNKNOWN
CertificateUNKNOWN 45165660
Dimensions4.34 × 4.32 × 2.69 mm
L/W Ratio1.00
Top View
4.34 mm4.32 mm0.31 ctH / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateUNKNOWN 45165660
Side View
Table 56.2%CrownGirdlePavilionCuletDepth 62.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $183 CAD|Low: $176 CAD|High: $431 CAD|Avg: $268 CAD|+4.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
October 10, 2026
Retailer 1$183 CAD
Retailer 4$213 CAD
Retailer 2$227 CAD
Retailer 3$431 CAD

4 data points across 4 retailers

5 retailers$183 CAD to $731 CAD

A
Cheapest Retailer
-
$183 CAD
$131 USD
B+
Retailer 2
-
$213 CAD
$152 USD
View
B+
Retailer 3
-
$227 CAD
$162 USD
View
B
Retailer 4
-
$431 CAD
$308 USD
View
Most Expensive
C
NZ Jewellers
89babddf-a1bf-453b-9937-413805624878 · Oct 27
$731 CAD
$522 USD
View
4 more retailers have this diamond
Prices start from $183 CADSave up to $547 CAD

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
0.31ct Round
$183 CAD