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0.31ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG704592349

Shape and cutting style on the report: Round brilliant

Certificate IGI LG704592349

Diamond specifications and retailer prices

From $78 USD
As of October 29, 2026
Save $631 USD (89%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $709 USD at MOH London · As of October 26, 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 LG704592349 or 704592349. Listed at 13 retailers as of October 26, 2026, with prices from $78 to $709, a $631 spread on the same certified stone. MOH London lists it at $709. 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 angle35.5°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG704592349
Dimensions4.35 × 4.33 × 2.70 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
4.35 mm4.33 mm0.31 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG704592349
Side View
Table 58.0%Crown 35.5°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 62.2%

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: $709 USD|Low: $59 USD|High: $712 USD|Avg: $219 USD|+0.5%
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 29, 2026
Retailer 13$78 USD
Retailer 9$87 USD
Retailer 4$90 USD
Retailer 10$103 USD
Retailer 11$103 USD
Retailer 7$130 USD
Retailer 2$166 USD
Retailer 6$208 USD
Retailer 5$213 USD
Retailer 3$310 USD
Retailer 8$323 USD
Retailer 12$370 USD
MOH London$709 USD

44 data points across 13 retailers

13 retailers$78 USD to $709 USD

A
Cheapest Retailer
-
$78 USD
A
Retailer 2
-
$87 USD
View
Final sale: no returns
A
Retailer 3
-
$90 USD
View
A
Retailer 4
-
$103 USD
View
A
Retailer 5
-
$103 USD
View
A
Retailer 6
-
$130 USD
View
Price last confirmed 11 days ago
A
Retailer 7
-
$166 USD
£131 GBP
View
B+
Retailer 8
-
$208 USD
€198 EUR
View
B+
Retailer 9
-
$213 USD
View
B+
Retailer 10
-
$310 USD
View
B
Retailer 11
-
$323 USD
View
B
Retailer 12
-
$370 USD
View
Most Expensive
B
MOH London
LG704592349 · Oct 26
$709 USD
£558 GBP
View
12 more retailers have this diamond
Prices start from $78 USDSave up to $631 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
$78 USD