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Round|Lab Grown|IGI

1.51ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG792616784

Shape and cutting style on the report: Round brilliant

Certificate IGI LG792616784

Diamond specifications and retailer prices

From £144 GBP
$193 USD
As of November 1, 2026
Save £692 GBP (83%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £836 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 1.51ct lab-grown round diamond

This 1.51ct lab-grown round sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG792616784 or 792616784. Listed at 19 retailers as of November 1, 2026, with prices from £144 to £836, a £692 spread on the same certified stone. MOH London lists it at £836. 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

1.51
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.8°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG792616784
Dimensions7.34 × 7.29 × 4.55 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.34 mm7.29 mm1.51 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG792616784
Side View
Table 56.0%Crown 33.8°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 62.2%

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: Nov 1
Current: £836 GBP|Low: £141 GBP|High: £863 GBP|Avg: £409 GBP|-1.8%
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
Retailer 15
Retailer 16
November 1, 2026
Retailer 5£144 GBP
Retailer 15£161 GBP
Retailer 14£167 GBP
Retailer 9£179 GBP
Retailer 6£180 GBP
Retailer 16£313 GBP
Retailer 2£325 GBP
Retailer 12£338 GBP
Retailer 13£427 GBP
Retailer 11£463 GBP
Retailer 7£534 GBP
Retailer 10£575 GBP
Retailer 3£582 GBP
Retailer 4£615 GBP
Retailer 8£642 GBP
MOH London£836 GBP

37 data points across 16 retailers

19 retailers£144 GBP to £836 GBP

Retailer 1
-
£144 GBP
$193 USD
Price last confirmed 44 days ago
A
Retailer 2
-
£144 GBP
$193 USD
View
A
Retailer 3
-
£161 GBP
$216 USD
View
Final sale: no returns
A
Retailer 4
-
£167 GBP
$224 USD
View
Retailer 5
-
£175 GBP
$235 USD
View
Price last confirmed 43 days ago
A
Retailer 6
-
£179 GBP
$240 USD
View
Retailer 7
-
£180 GBP
$241 USD
View
Price last confirmed 7 days ago
B+
Retailer 8
-
£313 GBP
$419 USD
View
A
Retailer 9
-
£325 GBP
View
A
Retailer 10
-
£338 GBP
$453 USD
View
B+
Retailer 11
-
£427 GBP
$572 USD
View
B+
Retailer 12
-
£463 GBP
$620 USD
View
Retailer 13
-
£534 GBP
$715 USD
View
Price last confirmed 11 days ago
Retailer 14
-
£572 GBP
$766 USD
View
Price last confirmed 41 days ago
B
Retailer 15
-
£575 GBP
$771 USD
View
B+
Retailer 16
-
£582 GBP
SGD 1,053 SGD
View
B+
Retailer 17
-
£615 GBP
$824 USD
View
B
Retailer 18
-
£642 GBP
$860 USD
View
Most Expensive
B
MOH London
LG792616784 · Nov 1
£836 GBP
View
18 more retailers have this diamond
Prices start from £144 GBPSave up to £692 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
1.51ct Round
£144 GBP