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Round|Lab Grown|IGI

0.31ct F SI1 Round Lab Grown Diamond

VG • F/SI1 • IGI LG480170746

Shape and cutting style on the report: Round brilliant

Certificate IGI LG480170746

Diamond specifications and retailer prices

From $170 USD
As of November 1, 2026
Save $821 USD (83%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $991 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 F colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG480170746 or 480170746. Listed at 11 retailers as of October 29, 2026, with prices from $170 to $991, a $821 spread on the same certified stone. MOH London lists it at $991. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.31
Carat
F
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle37°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG480170746
Dimensions4.28 × 4.32 × 2.69 mm
L/W Ratio1.01
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
4.28 mm4.32 mm0.31 ctF / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG480170746
Side View
Table 60.5%Crown 37°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.6%

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: $991 USD|Low: $163 USD|High: $998 USD|Avg: $373 USD|+0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 5$170 USD
Retailer 8$197 USD
Retailer 3$210 USD
Retailer 6$211 USD
Retailer 9$283 USD
Retailer 2$372 USD
Retailer 7$377 USD
Retailer 4$434 USD
Retailer 10$473 USD
MOH London$991 USD

42 data points across 10 retailers

11 retailers$170 USD to $991 USD

A
Cheapest Retailer
-
$170 USD
B+
Retailer 2
-
$197 USD
View
B+
Retailer 3
-
$210 USD
View
Retailer 4
-
$211 USD
View
Price last confirmed 7 days ago
B+
Retailer 5
-
$211 USD
View
B
Retailer 6
-
$372 USD
£293 GBP
View
B
Retailer 7
-
$377 USD
View
B
Retailer 8
-
$434 USD
€413 EUR
View
B
Retailer 9
-
$490 USD
£386 GBP
View
B
Retailer 10
-
$678 USD
View
Most Expensive
B
MOH London
LG480170746 · Oct 29
$991 USD
£780 GBP
View
10 more retailers have this diamond
Prices start from $170 USDSave up to $821 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
$170 USD