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Round|Lab Grown|IGI

1.72ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG787640381

Certificate IGI LG787640381

Diamond specifications and retailer prices

From £837 GBP
$1,114 USD
As of October 29, 2026
Save £808 GBP (49%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £1,645 GBP at Jared · As of October 30, 2026
View at Jared

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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG787640381 or 787640381. Listed at 4 retailers as of October 29, 2026, with prices from £837 to £1,645, a £808 spread on the same certified stone. Jared lists it at £1,645. 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
OriginLab Grown
Grading LabIGI
CertificateIGI LG787640381
Dimensions7.70 × 7.74 × 4.67 mm
L/W Ratio1.01
Top View
7.70 mm7.74 mm1.72 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG787640381
Side View
Table 59.0%CrownGirdle: MediumPavilionCulet: NoneDepth 60.5%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 29
Current: £1,645 GBP|Low: £837 GBP|High: £1,645 GBP|Avg: £1,313 GBP
Jared
Retailer 2
Retailer 3
Retailer 4
September 26, 2026
Retailer 2£837 GBP
Retailer 3£1,141 GBP
Retailer 4£1,141 GBP
Jared£1,645 GBP

6 data points across 4 retailers

4 retailers£837 GBP to £1,645 GBP

B
Cheapest Retailer
-
£837 GBP
$1,114 USD
B
Retailer 2
-
£1,141 GBP
$1,520 USD
View
B
Retailer 3
-
£1,141 GBP
$1,520 USD
View
Most Expensive
B
Jared
158608383 · Oct 30
£1,645 GBP
$2,190 USD
View
3 more retailers have this diamond
Prices start from £837 GBPSave up to £808 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
1.72ct Round
£837 GBP