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Oval|Lab Grown|IGI

1.27ct I SI1 Oval Lab Grown Diamond

ID • I/SI1 • IGI LG447000617

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG447000617

Diamond specifications and retailer prices

From £478 GBP
$641 USD
As of October 29, 2026
Save £1,873 GBP (80%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £2,352 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.27ct lab-grown oval diamond

This 1.27ct lab-grown oval sits in the one-and-a-quarter to one-and-a-half carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG447000617 or 447000617. Listed at 11 retailers as of October 29, 2026, with prices from £478 to £2,352, a £1,873 spread on the same certified stone. MOH London lists it at £2,352. 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

1.27
Carat
I
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle35.5°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG447000617
Dimensions8.41 × 6.19 × 3.86 mm
L/W Ratio1.36
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
8.41 mm6.19 mm1.27 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG447000617
Side View
Table 60.0%Crown 35.5°Girdle: MED-THKPavilion 41.4°Culet: NoneDepth 62.4%

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: Oct 29
Current: £2,352 GBP|Low: £460 GBP|High: £2,368 GBP|Avg: £985 GBP|-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 30, 2026
Retailer 8£478 GBP
Retailer 12£521 GBP
Retailer 13£536 GBP
Retailer 3£555 GBP
Retailer 9£555 GBP
Retailer 7£687 GBP
Retailer 2£845 GBP
Retailer 4£902 GBP
Retailer 10£907 GBP
Retailer 6£1,419 GBP
Retailer 11£1,561 GBP
Retailer 5£1,590 GBP
MOH London£2,352 GBP

36 data points across 13 retailers

11 retailers£478 GBP to £2,352 GBP

B+
Cheapest Retailer
-
£478 GBP
$641 USD
B+
Retailer 2
-
£521 GBP
$698 USD
View
B+
Retailer 3
-
£536 GBP
$718 USD
View
Final sale: no returns
Retailer 4
-
£555 GBP
$744 USD
View
Price last confirmed 15 days ago
B+
Retailer 5
-
£555 GBP
$744 USD
View
B+
Retailer 6
-
£687 GBP
$920 USD
View
B
Retailer 7
-
£845 GBP
View
B
Retailer 8
-
£907 GBP
$1,215 USD
View
B
Retailer 9
-
£1,419 GBP
$1,901 USD
View
B
Retailer 10
-
£1,561 GBP
$2,092 USD
View
Most Expensive
B
MOH London
LG447000617 · Oct 29
£2,352 GBP
View
10 more retailers have this diamond
Prices start from £478 GBPSave up to £1,873 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+
1.27ct Oval
£478 GBP