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Radiant|Lab Grown|IGI

1.29ct D IF Radiant Lab Grown Diamond

EX • D/IF • IGI LG754563637

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG754563637

Diamond specifications and retailer prices

From £173 GBP
As of November 4, 2026
Save £1,582 GBP (90%) vs most expensive(unlock to see where)
29 retailers carry this diamond
Most expensive: £1,756 GBP at Do Amore Diamonds · As of November 4, 2026
View at Do Amore Diamonds

About this 1.29ct lab-grown radiant diamond

This 1.29ct lab-grown radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG754563637 or 754563637. Listed at 29 retailers as of November 4, 2026, with prices from £173 to £1,756, a £1,582 spread on the same certified stone. Do Amore Diamonds lists it at £1,756. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.29
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.4°
Pavilion angle32.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754563637
Dimensions5.28 × 5.28 × 3.58 mm
L/W Ratio1.00
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
5.28 mm5.28 mm1.29 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754563637
Side View
Table 63.0%Crown 45.4°Girdle: MED-STKPavilion 32.5°Culet: NoneDepth 67.8%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: £332 GBP|Low: £173 GBP|High: £1,837 GBP|Avg: £703 GBP
Retailer 1
Retailer 2
Retailer 3
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Retailer 18
November 4, 2026
Retailer 11£173 GBP
Retailer 13£203 GBP
Retailer 1£332 GBP
Retailer 16£335 GBP
Retailer 2£394 GBP
Retailer 6£432 GBP
Retailer 18£448 GBP
Retailer 3£525 GBP
Retailer 4£581 GBP
Retailer 14£693 GBP
Retailer 12£763 GBP
Retailer 5£887 GBP
Retailer 17£952 GBP
Retailer 10£959 GBP
Retailer 15£963 GBP
Retailer 7£1,004 GBP
Retailer 9£1,367 GBP
Retailer 8£1,385 GBP

39 data points across 18 retailers

29 retailers£173 GBP to £1,756 GBP

A
Cheapest Retailer
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£173 GBP
Retailer 2
-
£183 GBP
View
Price last confirmed 27 days ago
Retailer 3
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£183 GBP
View
Price last confirmed 35 days ago
A
Retailer 4
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£203 GBP
View
Final sale: no returns
Retailer 5
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£213 GBP
View
Price last confirmed 38 days ago
Retailer 6
-
£224 GBP
View
Price last confirmed 36 days ago
Retailer 7
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£227 GBP
View
Price last confirmed 32 days ago
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Retailer 8
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£332 GBP
View
A
Retailer 9
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£335 GBP
View
A
Retailer 10
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£394 GBP
View
A
Retailer 11
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£406 GBP
View
A
Retailer 12
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£432 GBP
View
Retailer 13
-
£436 GBP
View
Price last confirmed 20 days ago
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Retailer 14
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£448 GBP
View
A
Retailer 15
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£499 GBP
View
A
Retailer 16
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£525 GBP
View
A
Retailer 17
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£581 GBP
View
B+
Retailer 18
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£693 GBP
View
B+
Retailer 19
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£763 GBP
View
Retailer 20
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£806 GBP
View
Price last confirmed 25 days ago
Retailer 21
-
£806 GBP
View
Price last confirmed 35 days ago
B+
Retailer 22
-
£887 GBP
View
B
Retailer 23
-
£952 GBP
View
Retailer 24
-
£959 GBP
View
Price last confirmed 30 days ago
B
Retailer 25
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£963 GBP
View
B+
Retailer 26
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£1,004 GBP
View
Retailer 27
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£1,367 GBP
View
Price last confirmed 17 days ago
B
Retailer 28
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£1,385 GBP
View
Most Expensive
B
Do Amore Diamonds
27-A0F5154EC · Nov 4
£1,756 GBP
$2,370 USD
View
28 more retailers have this diamond
Prices start from £173 GBPSave up to £1,582 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
1.29ct Radiant
£173 GBP