Oval|Lab Grown|UNKNOWN

0.31ct D SI1 Oval Lab Grown Diamond

ID • D/SI1 • UNKNOWN 3514751475

Certificate UNKNOWN 3514751475

Diamond specifications and retailer prices

From $178 USD
As of October 29, 2026
Save $213 USD (54%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $709 USD at NZ Jewellers · As of October 28, 2026
View at NZ Jewellers

About this 0.31ct lab-grown oval diamond

This 0.31ct 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 3514751475. Listed at 5 retailers as of October 29, 2026, with a 120% 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

0.31
Carat
D
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginLab Grown
Grading LabUNKNOWN
CertificateUNKNOWN 3514751475
Dimensions5.29 × 3.91 × 2.35 mm
L/W Ratio1.35
Top View
5.29 mm3.91 mm0.31 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateUNKNOWN 3514751475
Side View
Table 60.6%CrownGirdlePavilionCuletDepth 60.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 29
Current: $178 USD|Low: $171 USD|High: $391 USD|Avg: $266 USD|+4.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
October 10, 2026
Retailer 1$178 USD
Retailer 2$221 USD
Retailer 4$221 USD
Retailer 3$391 USD

5 data points across 4 retailers

5 retailers$178 USD to $391 USD

A
Cheapest Retailer
-
$178 USD
B+
Retailer 2
-
$206 USD
View
B+
Retailer 3
-
$221 USD
View
C
Retailer 4
-
$391 USD
View
Most Expensive
NZ Jewellers
0b2f4799-fd3b-4abe-a38e-435c52d94f03 · Oct 28
$709 USD
View
Price under review
4 more retailers have this diamond
Prices start from $178 USDSave up to $213 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.

A
0.31ct Oval
$178 USD