CaratHunter
Plans
Round|Lab Grown|IGI

1.51ct F SI1 Round Lab Grown Diamond

EX • F/SI1 • IGI LG759506912

Shape and cutting style on the report: Round brilliant

Certificate IGI LG759506912

Diamond specifications and retailer prices

From £166 GBP
As of November 5, 2026
Save £777 GBP (82%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £943 GBP at Reve Diamonds · As of November 6, 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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG759506912 or 759506912. Listed at 22 retailers as of November 5, 2026, with prices from £166 to £943, a £777 spread on the same certified stone. Reve Diamonds lists it at £943. 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
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.8°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG759506912
Dimensions7.48 × 7.45 × 4.46 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.48 mm7.45 mm1.51 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG759506912
Side View
Table 61.0%Crown 32.8°Girdle: THN-MEDPavilion 41.3°Culet: NoneDepth 59.7%

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: Nov 5
Current: £189 GBP|Low: £165 GBP|High: £943 GBP|Avg: £432 GBP|+2.4%
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Reve Diamonds
November 6, 2026
Retailer 9£166 GBP
Retailer 1£189 GBP
Retailer 18£193 GBP
Retailer 5£206 GBP
Retailer 6£206 GBP
Retailer 3£323 GBP
Retailer 7£351 GBP
Retailer 11£357 GBP
Retailer 12£376 GBP
Retailer 14£379 GBP
Retailer 4£395 GBP
Retailer 2£429 GBP
Retailer 16£542 GBP
Retailer 13£654 GBP
Retailer 10£663 GBP
Retailer 17£665 GBP
Retailer 8£701 GBP
Retailer 15£823 GBP
Reve Diamonds£943 GBP

31 data points across 19 retailers

22 retailers£166 GBP to £943 GBP

A
Cheapest Retailer
-
£166 GBP
A
Retailer 2
-
£189 GBP
View
Final sale: no returns
A
Retailer 3
-
£193 GBP
View
Retailer 4
-
£206 GBP
View
Price last confirmed 12 days ago
A
Retailer 5
-
£206 GBP
View
A
Retailer 6
-
£323 GBP
View
B+
Retailer 7
-
£351 GBP
View
A
Retailer 8
-
£357 GBP
View
A
Retailer 9
-
£376 GBP
View
B+
Retailer 10
-
£379 GBP
View
B+
Retailer 11
-
£395 GBP
View
B+
Retailer 12
-
£429 GBP
View
B
Retailer 13
-
£542 GBP
View
B
Retailer 14
-
£573 GBP
View
B
Retailer 15
-
£654 GBP
View
B
Retailer 16
-
£654 GBP
View
Retailer 17
-
£657 GBP
View
Price last confirmed 46 days ago
B
Retailer 18
-
£663 GBP
View
B
Retailer 19
-
£665 GBP
View
B
Retailer 20
-
£701 GBP
View
B
Retailer 21
-
£823 GBP
View
Most Expensive
B
Reve Diamonds
70B9D45A9 · Nov 6
£943 GBP
$1,269 USD
View
21 more retailers have this diamond
Prices start from £166 GBPSave up to £777 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
£166 GBP