Radiant|Lab Grown|IGI

1.27ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG799643975

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

Certificate IGI LG799643975

Diamond specifications and retailer prices

From £241 GBP
$324 USD
As of November 1, 2026
Save £1,301 GBP (84%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £1,859 GBP at Rare Carat · As of October 18, 2026
View at Rare Carat

About this 1.27ct lab-grown radiant diamond

This 1.27ct lab-grown radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG799643975 or 799643975. Listed at 21 retailers as of October 31, 2026, with a 539% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.27
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.7°
Pavilion angle36.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG799643975
Dimensions7.66 × 5.58 × 3.56 mm
L/W Ratio1.37
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
7.66 mm5.58 mm1.27 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG799643975
Side View
Table 65.0%Crown 44.7°Girdle: MediumPavilion 36.3°Culet: NoneDepth 63.8%

Caratlytics Score

How it works →
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: £1,859 GBP|Low: £224 GBP|High: £2,534 GBP|Avg: £883 GBP|-0.6%
Rare Carat
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
November 2, 2026
Retailer 11£241 GBP
Retailer 8£332 GBP
Retailer 14£384 GBP
Retailer 3£411 GBP
Retailer 10£426 GBP
Retailer 16£435 GBP
Retailer 13£473 GBP
Retailer 2£474 GBP
Retailer 5£628 GBP
Retailer 17£760 GBP
Retailer 4£833 GBP
Retailer 7£936 GBP
Retailer 12£991 GBP
Retailer 6£1,048 GBP
Retailer 9£1,295 GBP
Retailer 15£1,543 GBP
Rare Carat£1,859 GBP

29 data points across 17 retailers

21 retailers£241 GBP to £1,543 GBP

A
Cheapest Retailer
-
£241 GBP
$324 USD
Final sale: no returns
Retailer 2
-
£257 GBP
$345 USD
View
Price last confirmed 32 days ago
Retailer 3
-
£311 GBP
$417 USD
View
Price last confirmed 36 days ago
Retailer 4
-
£332 GBP
$446 USD
View
Price last confirmed 31 days ago
A
Retailer 5
-
£384 GBP
$515 USD
View
A
Retailer 6
-
£411 GBP
$551 USD
View
A
Retailer 7
-
£426 GBP
ZAR 9,246 ZAR
View
A
Retailer 8
-
£435 GBP
$584 USD
View
A
Retailer 9
-
£473 GBP
€605 EUR
View
A
Retailer 10
-
£474 GBP
View
B+
Retailer 11
-
£628 GBP
$843 USD
View
Retailer 12
-
£757 GBP
$1,016 USD
View
Price last confirmed 28 days ago
B+
Retailer 13
-
£760 GBP
$1,020 USD
View
B+
Retailer 14
-
£833 GBP
$1,118 USD
View
B+
Retailer 15
-
£936 GBP
SGD 1,697 SGD
View
B+
Retailer 16
-
£991 GBP
View
B
Retailer 17
-
£1,048 GBP
$1,406 USD
View
Retailer 18
-
£1,069 GBP
$1,434 USD
View
Price last confirmed 33 days ago
B
Retailer 19
-
£1,543 GBP
$2,070 USD
View
Retailer 20
-
£1,841 GBP
$2,470 USD
View
Price last confirmed 15 days ago
Most Expensive
Rare Carat
7388-U_l_800679998 · Oct 18
£1,859 GBP
$2,495 USD
View
Price last confirmed 15 days ago
20 more retailers have this diamond
Prices start from £241 GBPSave up to £1,301 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
1.27ct Radiant
£241 GBP