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Round|Lab Grown|IGI

1.51ct E SI1 Round Lab Grown Diamond

EX • E/SI1 • IGI LG793631681

Shape and cutting style on the report: Round brilliant

Certificate IGI LG793631681

Diamond specifications and retailer prices

From £175 GBP
As of November 5, 2026
Save £796 GBP (82%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £970 GBP at Reve Diamonds · As of November 4, 2026
View at Reve Diamonds

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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG793631681 or 793631681. Listed at 21 retailers as of November 4, 2026, with prices from £175 to £970, a £796 spread on the same certified stone. Reve Diamonds lists it at £970. 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
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG793631681
Dimensions7.33 × 7.28 × 4.62 mm
L/W Ratio1.01
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
7.33 mm7.28 mm1.51 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG793631681
Side View
Table 55.0%Crown 36°Girdle: MediumPavilion 41.2°Culet: NoneDepth 63.3%

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 5
Current: £404 GBP|Low: £173 GBP|High: £970 GBP|Avg: £474 GBP|+6.5%
Retailer 1
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
Reve Diamonds
November 6, 2026
Retailer 5£175 GBP
Retailer 11£195 GBP
Retailer 12£203 GBP
Retailer 2£217 GBP
Retailer 14£217 GBP
Retailer 3£366 GBP
Retailer 13£403 GBP
Retailer 1£404 GBP
Retailer 10£407 GBP
Retailer 6£697 GBP
Retailer 9£699 GBP
Retailer 4£735 GBP
Retailer 7£810 GBP
Retailer 8£866 GBP
Reve Diamonds£970 GBP

45 data points across 15 retailers

21 retailers£175 GBP to £970 GBP

Retailer 1
-
£173 GBP
Price last confirmed 45 days ago
A
Retailer 2
-
£175 GBP
View
A
Retailer 3
-
£195 GBP
View
Final sale: no returns
A
Retailer 4
-
£203 GBP
View
Retailer 5
-
£212 GBP
View
Price last confirmed 45 days ago
Retailer 6
-
£217 GBP
View
Price last confirmed 12 days ago
A
Retailer 7
-
£217 GBP
View
A
Retailer 8
-
£323 GBP
View
B+
Retailer 9
-
£366 GBP
View
B+
Retailer 10
-
£403 GBP
View
B+
Retailer 11
-
£404 GBP
View
B+
Retailer 12
-
£407 GBP
View
B+
Retailer 13
-
£578 GBP
View
Retailer 14
-
£691 GBP
View
Price last confirmed 46 days ago
B
Retailer 15
-
£697 GBP
View
B
Retailer 16
-
£699 GBP
View
B
Retailer 17
-
£735 GBP
View
B
Retailer 18
-
£773 GBP
View
B
Retailer 19
-
£810 GBP
View
B
Retailer 20
-
£866 GBP
View
Most Expensive
B
Reve Diamonds
956C4DEDD · Nov 4
£970 GBP
$1,306 USD
View
20 more retailers have this diamond
Prices start from £175 GBPSave up to £796 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
£175 GBP