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Oval|Lab Grown|IGI

1.74ct D SI1 Oval Lab Grown Diamond

VG • D/SI1 • IGI LG510193309

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG510193309

Diamond specifications and retailer prices

From £171 GBP
$228 USD
As of October 29, 2026
Save £748 GBP (81%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £919 GBP at MOH London · As of October 26, 2026
View at MOH London

About this 1.74ct lab-grown oval diamond

This 1.74ct 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 very-good cut grade and certified by IGI LG510193309 or 510193309. Listed at 15 retailers as of October 26, 2026, with prices from £171 to £919, a £748 spread on the same certified stone. MOH London lists it at £919. 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

1.74
Carat
D
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG510193309
Dimensions9.53 × 6.80 × 4.31 mm
L/W Ratio1.40
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
9.53 mm6.80 mm1.74 ctD / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG510193309
Side View
Table 60.0%Crown 35.3°Girdle: MED-THKPavilion 41°Culet: NoneDepth 63.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 29
Current: £919 GBP|Low: £147 GBP|High: £929 GBP|Avg: £534 GBP|-0.9%
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
Retailer 14
October 30, 2026
Retailer 3£171 GBP
Retailer 13£191 GBP
Retailer 12£199 GBP
Retailer 7£213 GBP
Retailer 9£285 GBP
Retailer 2£396 GBP
Retailer 8£409 GBP
Retailer 4£411 GBP
Retailer 11£477 GBP
Retailer 10£683 GBP
Retailer 14£722 GBP
Retailer 6£739 GBP
Retailer 5£856 GBP
MOH London£919 GBP

43 data points across 14 retailers

15 retailers£171 GBP to £919 GBP

A
Cheapest Retailer
-
£171 GBP
$228 USD
A
Retailer 2
-
£191 GBP
$255 USD
View
Final sale: no returns
A
Retailer 3
-
£199 GBP
$265 USD
View
A
Retailer 4
-
£213 GBP
$283 USD
View
A
Retailer 5
-
£229 GBP
$305 USD
View
B+
Retailer 6
-
£285 GBP
$380 USD
View
A
Retailer 7
-
£396 GBP
View
B+
Retailer 8
-
£409 GBP
$544 USD
View
B+
Retailer 9
-
£411 GBP
€521 EUR
View
Price last confirmed 7 days ago
B+
Retailer 10
-
£477 GBP
$635 USD
View
B
Retailer 11
-
£683 GBP
$909 USD
View
B
Retailer 12
-
£722 GBP
$961 USD
View
B
Retailer 13
-
£739 GBP
$984 USD
View
Retailer 14
-
£856 GBP
$1,140 USD
View
Price last confirmed 11 days ago
Most Expensive
B
MOH London
LG510193309 · Oct 26
£919 GBP
View
14 more retailers have this diamond
Prices start from £171 GBPSave up to £748 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
1.74ct Oval
£171 GBP