CaratHunter
Plans
Radiant|Lab Grown|IGI

1.28ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG801686051

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

Certificate IGI LG801686051

Diamond specifications and retailer prices

From £313 GBP
$420 USD
As of November 1, 2026
Save £1,677 GBP (84%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,990 GBP at Do Amore Diamonds · As of November 1, 2026
View at Do Amore Diamonds

About this 1.28ct lab-grown radiant diamond

This 1.28ct 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 LG801686051 or 801686051. Listed at 15 retailers as of November 1, 2026, with prices from £313 to £1,990, a £1,677 spread on the same certified stone. Do Amore Diamonds lists it at £1,990. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.5°
Pavilion angle35.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG801686051
Dimensions7.76 × 5.38 × 3.59 mm
L/W Ratio1.44
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
7.76 mm5.38 mm1.28 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG801686051
Side View
Table 63.0%Crown 42.5°Girdle: MED-STKPavilion 35.2°Culet: NoneDepth 66.7%

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 1
Current: £1,990 GBP|Low: £313 GBP|High: £2,534 GBP|Avg: £970 GBP|-9.8%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 4£313 GBP
Retailer 2£316 GBP
Retailer 8£397 GBP
Retailer 12£410 GBP
Retailer 10£455 GBP
Retailer 3£516 GBP
Retailer 6£521 GBP
Retailer 9£855 GBP
Retailer 5£1,230 GBP
Retailer 7£1,774 GBP
Retailer 11£1,844 GBP
Do Amore Diamonds£1,990 GBP

35 data points across 12 retailers

15 retailers£313 GBP to £1,990 GBP

Retailer 1
-
£236 GBP
$317 USD
Price last confirmed 22 days ago
Retailer 2
-
£273 GBP
$367 USD
View
Price last confirmed 20 days ago
A
Retailer 3
-
£313 GBP
$420 USD
View
Final sale: no returns
A
Retailer 4
-
£316 GBP
View
A
Retailer 5
-
£397 GBP
$533 USD
View
A
Retailer 6
-
£410 GBP
$550 USD
View
A
Retailer 7
-
£455 GBP
$611 USD
View
A
Retailer 8
-
£516 GBP
$692 USD
View
A
Retailer 9
-
£521 GBP
€666 EUR
View
B+
Retailer 10
-
£855 GBP
$1,147 USD
View
Retailer 11
-
£1,039 GBP
$1,394 USD
View
Price last confirmed 23 days ago
B+
Retailer 12
-
£1,230 GBP
View
B
Retailer 13
-
£1,774 GBP
$2,380 USD
View
Retailer 14
-
£1,844 GBP
$2,475 USD
View
Price last confirmed 15 days ago
Most Expensive
B
Do Amore Diamonds
27-43D2CC484 · Nov 1
£1,990 GBP
$2,670 USD
View
14 more retailers have this diamond
Prices start from £313 GBPSave up to £1,677 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
1.28ct Radiant
£313 GBP