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Round|Lab Grown|IGI

0.31ct D SI1 Round Lab Grown Diamond

EX • D/SI1 • IGI LG677530369

Shape and cutting style on the report: Round brilliant

Certificate IGI LG677530369

Diamond specifications and retailer prices

From $108 AUD
$76 USD
As of October 29, 2026
Save $886 AUD (89%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $994 AUD 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 LG677530369 or 677530369. Listed at 17 retailers as of October 29, 2026, with prices from $108 to $994, a $886 spread on the same certified stone. MOH London lists it at $994. 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
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG677530369
Dimensions4.36 × 4.34 × 2.62 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
4.36 mm4.34 mm0.31 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG677530369
Side View
Table 61.0%Crown 34.6°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 60.3%

Caratlytics Score

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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: $994 AUD|Low: $85 AUD|High: $994 AUD|Avg: $327 AUD|+1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 31, 2026
Retailer 13$108 AUD
Retailer 5$121 AUD
Retailer 7$125 AUD
Retailer 9$144 AUD
Retailer 10$144 AUD
Retailer 6$253 AUD
Retailer 2$290 AUD
Retailer 4$300 AUD
Retailer 3$313 AUD
Retailer 12$433 AUD
Retailer 8$457 AUD
Retailer 11$518 AUD
MOH London$994 AUD

42 data points across 13 retailers

17 retailers$108 AUD to $994 AUD

A
Cheapest Retailer
-
$108 AUD
$76 USD
Retailer 2
-
$108 AUD
$76 USD
View
Price last confirmed 40 days ago
A
Retailer 3
-
$121 AUD
$85 USD
View
Final sale: no returns
Retailer 4
-
$125 AUD
$88 USD
View
Price last confirmed 41 days ago
A
Retailer 5
-
$125 AUD
$88 USD
View
Retailer 6
-
$141 AUD
$99 USD
View
Price last confirmed 40 days ago
A
Retailer 7
-
$144 AUD
$101 USD
View
A
Retailer 8
-
$144 AUD
$101 USD
View
A
Retailer 9
-
$253 AUD
£140 GBP
View
B+
Retailer 10
-
$290 AUD
€194 EUR
View
B+
Retailer 11
-
$300 AUD
$211 USD
View
Retailer 12
-
$313 AUD
$220 USD
View
Price last confirmed 19 days ago
Retailer 13
-
$430 AUD
$302 USD
View
Price last confirmed 40 days ago
B+
Retailer 14
-
$433 AUD
$304 USD
View
B
Retailer 15
-
$457 AUD
$321 USD
View
B
Retailer 16
-
$518 AUD
$364 USD
View
Most Expensive
B
MOH London
LG677530369 · Oct 29
$994 AUD
£550 GBP
View
16 more retailers have this diamond
Prices start from $108 AUDSave up to $886 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
0.31ct Round
$108 AUD