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Oval|Lab Grown|IGI

1.72ct D SI1 Oval Lab Grown Diamond

ID • D/SI1 • IGI LG735550873

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG735550873

Diamond specifications and retailer prices

From £172 GBP
$229 USD
As of October 29, 2026
Save £879 GBP (84%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £1,051 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.72ct lab-grown oval diamond

This 1.72ct lab-grown oval sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG735550873 or 735550873. Listed at 19 retailers as of October 29, 2026, with prices from £172 to £1,051, a £879 spread on the same certified stone. Brilliant Earth lists it at £1,051. 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

1.72
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG735550873
Dimensions10.02 × 6.61 × 4.18 mm
L/W Ratio1.52
Girdle conditionFaceted
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
10.02 mm6.61 mm1.72 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG735550873
Side View
Table 61.0%Crown 35.6°Girdle: MediumPavilion 41.2°Culet: NoneDepth 63.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 29
Current: £1,051 GBP|Low: £165 GBP|High: £1,051 GBP|Avg: £455 GBP
Brilliant Earth
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
October 30, 2026
Retailer 12£172 GBP
Retailer 6£192 GBP
Retailer 4£200 GBP
Retailer 13£213 GBP
Retailer 2£238 GBP
Retailer 8£351 GBP
Retailer 14£362 GBP
Retailer 7£401 GBP
Retailer 5£466 GBP
Retailer 3£686 GBP
Retailer 11£688 GBP
Retailer 10£859 GBP
Retailer 9£860 GBP
Brilliant Earth£1,051 GBP

43 data points across 14 retailers

19 retailers£172 GBP to £1,051 GBP

A
Cheapest Retailer
-
£172 GBP
$229 USD
A
Retailer 2
-
£192 GBP
$256 USD
View
Final sale: no returns
A
Retailer 3
-
£200 GBP
$266 USD
View
A
Retailer 4
-
£213 GBP
$284 USD
View
A
Retailer 5
-
£213 GBP
$284 USD
View
A
Retailer 6
-
£238 GBP
View
A
Retailer 7
-
£351 GBP
€445 EUR
View
B+
Retailer 8
-
£362 GBP
$482 USD
View
A
Retailer 9
-
£401 GBP
View
B+
Retailer 10
-
£466 GBP
$620 USD
View
B+
Retailer 11
-
£469 GBP
$624 USD
View
B
Retailer 12
-
£681 GBP
SGD 1,226 SGD
View
B
Retailer 13
-
£686 GBP
$913 USD
View
B+
Retailer 14
-
£688 GBP
$916 USD
View
B
Retailer 15
-
£725 GBP
$965 USD
View
B
Retailer 16
-
£859 GBP
View
Retailer 17
-
£860 GBP
$1,145 USD
View
Price last confirmed 11 days ago
Retailer 18
-
£871 GBP
$1,160 USD
View
Price last confirmed 15 days ago
Most Expensive
B
Brilliant Earth
16385956A · Oct 29
£1,051 GBP
$1,400 USD
View
18 more retailers have this diamond
Prices start from £172 GBPSave up to £879 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
1.72ct Oval
£172 GBP