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Oval|Lab Grown|IGI

1.30ct H SI1 Oval Lab Grown Diamond

GD • H/SI1 • IGI LG451056277

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG451056277

Diamond specifications and retailer prices

From £548 GBP
As of November 5, 2026
Save £1,951 GBP (78%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £2,499 GBP at MOH London · As of November 3, 2026
View at MOH London

About this 1.3ct lab-grown oval diamond

This 1.3ct lab-grown oval sits in the one-and-a-quarter to one-and-a-half carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG451056277 or 451056277. Listed at 11 retailers as of November 3, 2026, with prices from £548 to £2,499, a £1,951 spread on the same certified stone. MOH London lists it at £2,499. 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

1.30
Carat
H
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishGood
SymmetryGood
FluorescenceNone
Crown angle35.7°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451056277
Dimensions8.93 × 6.07 × 3.77 mm
L/W Ratio1.47
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
8.93 mm6.07 mm1.30 ctH / SI1
OriginLab Grown
CutGood
PolishGood
SymmetryGood
FluorescenceNone
CertificateIGI LG451056277
Side View
Table 58.5%Crown 35.7°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 62.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £2,499 GBP|Low: £548 GBP|High: £2,532 GBP|Avg: £1,177 GBP
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£548 GBP
Retailer 2£553 GBP
Retailer 8£614 GBP
Retailer 6£637 GBP
Retailer 3£770 GBP
Retailer 9£1,005 GBP
Retailer 7£1,033 GBP
Retailer 4£1,567 GBP
Retailer 10£1,822 GBP
MOH London£2,499 GBP

19 data points across 10 retailers

11 retailers£548 GBP to £2,499 GBP

B+
Cheapest Retailer
-
£548 GBP
B+
Retailer 2
-
£553 GBP
View
B
Retailer 3
-
£597 GBP
View
B
Retailer 4
-
£614 GBP
View
Final sale: no returns
Retailer 5
-
£637 GBP
View
Price last confirmed 25 days ago
B
Retailer 6
-
£637 GBP
View
B
Retailer 7
-
£770 GBP
View
C
Retailer 8
-
£1,033 GBP
View
C
Retailer 9
-
£1,567 GBP
View
C
Retailer 10
-
£1,789 GBP
View
Most Expensive
C
MOH London
LG451056277 · Nov 3
£2,499 GBP
View
10 more retailers have this diamond
Prices start from £548 GBPSave up to £1,951 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.

B+
1.30ct Oval
£548 GBP