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Oval|Lab Grown|IGI

1.39ct H SI1 Oval Lab Grown Diamond

ID • H/SI1 • IGI LG494170699

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG494170699

Diamond specifications and retailer prices

From £252 GBP
$338 USD
As of October 31, 2026
Save £1,681 GBP (87%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £1,933 GBP at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 1.39ct lab-grown oval diamond

This 1.39ct 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 top-tier cut grade and certified by IGI LG494170699 or 494170699. Listed at 13 retailers as of October 31, 2026, with prices from £252 to £1,933, a £1,681 spread on the same certified stone. Do Amore Diamonds lists it at £1,933. 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

1.39
Carat
H
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.9°
Pavilion angle36.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG494170699
Dimensions8.79 × 6.45 × 3.88 mm
L/W Ratio1.36
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
8.79 mm6.45 mm1.39 ctH / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG494170699
Side View
Table 55.5%Crown 36.9°Girdle: STK-THKPavilion 36.1°Culet: NoneDepth 60.2%

Caratlytics Score

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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 31
Current: £1,933 GBP|Low: £252 GBP|High: £1,933 GBP|Avg: £727 GBP
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 1, 2026
Retailer 7£252 GBP
Retailer 6£270 GBP
Retailer 11£270 GBP
Retailer 3£299 GBP
Retailer 4£388 GBP
Retailer 5£406 GBP
Retailer 10£443 GBP
Retailer 9£516 GBP
Retailer 8£829 GBP
Retailer 12£1,078 GBP
Retailer 2£1,193 GBP
Do Amore Diamonds£1,933 GBP

21 data points across 12 retailers

13 retailers£252 GBP to £1,933 GBP

A
Cheapest Retailer
-
£252 GBP
$338 USD
A
Retailer 2
-
£270 GBP
$362 USD
View
Retailer 3
-
£270 GBP
$362 USD
View
Price last confirmed 7 days ago
A
Retailer 4
-
£299 GBP
$401 USD
View
A
Retailer 5
-
£388 GBP
$520 USD
View
A
Retailer 6
-
£406 GBP
View
A
Retailer 7
-
£443 GBP
$593 USD
View
B+
Retailer 8
-
£516 GBP
$692 USD
View
B
Retailer 9
-
£829 GBP
$1,111 USD
View
B
Retailer 10
-
£958 GBP
$1,283 USD
View
B
Retailer 11
-
£1,078 GBP
$1,445 USD
View
B
Retailer 12
-
£1,193 GBP
View
Most Expensive
B
Do Amore Diamonds
27-C97038B3E · Oct 31
£1,933 GBP
$2,590 USD
View
12 more retailers have this diamond
Prices start from £252 GBPSave up to £1,681 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
1.39ct Oval
£252 GBP