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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 €117 EUR
$131 USD
As of November 1, 2026
Save €350 EUR (75%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: €467 EUR at NZ Jewellers · As of October 30, 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 30, 2026, with prices from €117 to €467, a €350 spread on the same certified stone. NZ Jewellers lists it at €467. 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
Colour
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: Nov 1
Current: €117 EUR|Low: €113 EUR|High: €276 EUR|Avg: €171 EUR|+4.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
October 10, 2026
Retailer 1€117 EUR
Retailer 4€136 EUR
Retailer 2€145 EUR
Retailer 3€276 EUR

4 data points across 4 retailers

5 retailers€117 EUR to €467 EUR

A
Cheapest Retailer
-
€117 EUR
$131 USD
B+
Retailer 2
-
€136 EUR
$152 USD
View
B+
Retailer 3
-
€145 EUR
$162 USD
View
B
Retailer 4
-
€276 EUR
$308 USD
View
Most Expensive
C
NZ Jewellers
89babddf-a1bf-453b-9937-413805624878 · Oct 30
€467 EUR
$522 USD
View
4 more retailers have this diamond
Prices start from €117 EURSave up to €350 EUR

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
€117 EUR