Oval|Lab Grown|IGI

0.31ct D SI1 Oval Lab Grown Diamond

VG • D/SI1 • IGI LG791649929

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG791649929

Diamond specifications and retailer prices

From £74 GBP
$99 USD
As of October 29, 2026
Save £240 GBP (76%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £329 GBP at NZ Jewellers · As of October 18, 2026
View at NZ Jewellers

About this 0.31ct lab-grown oval diamond

This 0.31ct lab-grown oval sits in the sub-half-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG791649929 or 791649929. Listed at 13 retailers as of October 29, 2026, with a 325% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
D
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle27.1°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG791649929
Dimensions5.66 × 3.96 × 2.35 mm
L/W Ratio1.43
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
5.66 mm3.96 mm0.31 ctD / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateIGI LG791649929
Side View
Table 53.0%Crown 27.1°Girdle: MED-THKPavilion 40.3°Culet: NoneDepth 59.3%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 29
Current: £329 GBP|Low: £74 GBP|High: £876 GBP|Avg: £234 GBP|-0.5%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
October 29, 2026
Retailer 8£74 GBP
Retailer 12£87 GBP
Retailer 14£87 GBP
Retailer 13£99 GBP
Retailer 15£101 GBP
Retailer 10£134 GBP
Retailer 4£172 GBP
Retailer 3£202 GBP
Retailer 5£202 GBP
Retailer 11£203 GBP
Retailer 6£207 GBP
Retailer 9£314 GBP
NZ Jewellers£329 GBP
Retailer 7£357 GBP
Retailer 2£853 GBP

19 data points across 15 retailers

13 retailers£74 GBP to £314 GBP

A
Cheapest Retailer
-
£74 GBP
$99 USD
Retailer 2
-
£75 GBP
$100 USD
View
Price last confirmed 12 days ago
Retailer 3
-
£87 GBP
$116 USD
View
Price last confirmed 10 days ago
A
Retailer 4
-
£87 GBP
$117 USD
View
Retailer 5
-
£99 GBP
$132 USD
View
Price last confirmed 12 days ago
A
Retailer 6
-
£101 GBP
$135 USD
View
B+
Retailer 7
-
£134 GBP
CA$249 CAD
View
B
Retailer 8
-
£172 GBP
$230 USD
View
B
Retailer 9
-
£202 GBP
$270 USD
View
B
Retailer 10
-
£202 GBP
$270 USD
View
B
Retailer 11
-
£314 GBP
$421 USD
View
Most Expensive
NZ Jewellers
54d18b79-1dd0-40ac-bde6-d8dc9818cac7 · Oct 18
£329 GBP
$441 USD
View
Price last confirmed 12 days ago
11 more retailers have this diamond
Prices start from £74 GBPSave up to £240 GBP

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 Oval
£74 GBP