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1.72ct I SI2 Round Lab Grown Diamond

EX • I/SI2 • IGI LG440011519

Shape and cutting style on the report: Round brilliant

Certificate IGI LG440011519

Diamond specifications and retailer prices

From £716 GBP
$960 USD
As of October 30, 2026
Save £2,758 GBP (79%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £3,475 GBP at MOH London · As of October 27, 2026
View at MOH London

About this 1.72ct lab-grown round diamond

This 1.72ct lab-grown round sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG440011519 or 440011519. Listed at 10 retailers as of October 27, 2026, with prices from £716 to £3,475, a £2,758 spread on the same certified stone. MOH London lists it at £3,475. 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
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG440011519
Dimensions7.75 × 7.72 × 4.71 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.75 mm7.72 mm1.72 ctI / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG440011519
Side View
Table 57.0%Crown 32°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 60.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £3,475 GBP|Low: £716 GBP|High: £3,516 GBP|Avg: £1,903 GBP|+0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 30, 2026
Retailer 2£716 GBP
Retailer 4£1,172 GBP
Retailer 7£1,356 GBP
Retailer 6£1,664 GBP
Retailer 3£1,919 GBP
Retailer 5£2,205 GBP
Retailer 8£2,721 GBP
MOH London£3,475 GBP

13 data points across 8 retailers

10 retailers£716 GBP to £3,475 GBP

A
Cheapest Retailer
-
£716 GBP
$960 USD
B+
Retailer 2
-
£1,048 GBP
$1,404 USD
View
B+
Retailer 3
-
£1,140 GBP
$1,527 USD
View
B+
Retailer 4
-
£1,172 GBP
$1,571 USD
View
Final sale: no returns
Retailer 5
-
£1,215 GBP
$1,628 USD
View
Price last confirmed 17 days ago
B+
Retailer 6
-
£1,215 GBP
$1,628 USD
View
B
Retailer 7
-
£1,919 GBP
$2,571 USD
View
B
Retailer 8
-
£2,205 GBP
$2,955 USD
View
B
Retailer 9
-
£2,278 GBP
$3,052 USD
View
Most Expensive
B
MOH London
LG440011519 · Oct 27
£3,475 GBP
View
9 more retailers have this diamond
Prices start from £716 GBPSave up to £2,758 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 Round
£716 GBP