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Round|Lab Grown|IGI

0.31ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG644445310

Shape and cutting style on the report: Round brilliant

Certificate IGI LG644445310

Diamond specifications and retailer prices

From $102 USD
HK$800 HKD
As of October 30, 2026
Save $536 USD (84%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $639 USD at MOH London · As of October 29, 2026
View at MOH London

About this 0.31ct lab-grown round diamond

This 0.31ct lab-grown round 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 IGI LG644445310 or 644445310. Listed at 10 retailers as of October 29, 2026, with prices from $102 to $639, a $536 spread on the same certified stone. MOH London lists it at $639. 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
SymmetryExcellent
FluorescenceNone
Crown angle33.4°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG644445310
Dimensions4.39 × 4.41 × 2.66 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
4.39 mm4.41 mm0.31 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG644445310
Side View
Table 59.0%Crown 33.4°Girdle: MediumPavilion 40.9°Culet: NoneDepth 60.4%

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 30
Current: $639 USD|Low: $102 USD|High: $673 USD|Avg: $268 USD|-4.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 7$102 USD
Retailer 5$130 USD
Retailer 2$154 USD
Retailer 3$175 USD
Retailer 4$208 USD
Retailer 9$257 USD
Retailer 10$265 USD
Retailer 6$278 USD
Retailer 8$339 USD
MOH London$639 USD

42 data points across 10 retailers

10 retailers$102 USD to $639 USD

A
Cheapest Retailer
-
$102 USD
HK$800 HKD
Retailer 2
-
$130 USD
View
Price last confirmed 12 days ago
A
Retailer 3
-
$154 USD
£122 GBP
View
A
Retailer 4
-
$175 USD
€167 EUR
View
B+
Retailer 5
-
$208 USD
£164 GBP
View
B+
Retailer 6
-
$257 USD
SGD 347 SGD
View
B+
Retailer 7
-
$265 USD
View
B+
Retailer 8
-
$278 USD
View
B
Retailer 9
-
$339 USD
View
Most Expensive
B
MOH London
LG644445310 · Oct 29
$639 USD
£503 GBP
View
9 more retailers have this diamond
Prices start from $102 USDSave up to $536 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 Round
$102 USD