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Radiant|Lab Grown|IGI

1.28ct D IF Radiant Lab Grown Diamond

VG • D/IF • IGI LG762546104

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

Certificate IGI LG762546104

Diamond specifications and retailer prices

From €412 EUR
HK$3,600 HKD
As of October 31, 2026
Save €1,243 EUR (75%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: €1,656 EUR at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

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 IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG762546104 or 762546104. Listed at 13 retailers as of October 30, 2026, with prices from €412 to €1,656, a €1,243 spread on the same certified stone. Brilliant Earth lists it at €1,656. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.28
Carat
D
Color
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.9°
Pavilion angle33.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG762546104
Dimensions5.45 × 5.45 × 3.47 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
5.45 mm5.45 mm1.28 ctD / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG762546104
Side View
Table 66.0%Crown 41.9°Girdle: MediumPavilion 33.3°Culet: NoneDepth 63.7%

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: Oct 31
Current: €1,656 EUR|Low: €349 EUR|High: €2,417 EUR|Avg: €884 EUR|-31.5%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 31, 2026
Retailer 3€412 EUR
Retailer 12€425 EUR
Retailer 4€488 EUR
Retailer 2€498 EUR
Retailer 8€517 EUR
Retailer 6€524 EUR
Retailer 13€593 EUR
Retailer 5€670 EUR
Retailer 11€1,118 EUR
Retailer 7€1,133 EUR
Retailer 9€1,207 EUR
Retailer 10€1,651 EUR
Brilliant Earth€1,656 EUR

40 data points across 13 retailers

13 retailers€412 EUR to €1,656 EUR

A
Cheapest Retailer
-
€412 EUR
HK$3,600 HKD
A
Retailer 2
-
€425 EUR
$475 USD
View
A
Retailer 3
-
€488 EUR
$545 USD
View
A
Retailer 4
-
€498 EUR
View
A
Retailer 5
-
€517 EUR
ZAR 9,332 ZAR
View
A
Retailer 6
-
€524 EUR
£461 GBP
View
A
Retailer 7
-
€593 EUR
$663 USD
View
B+
Retailer 8
-
€670 EUR
$749 USD
View
B
Retailer 9
-
€1,118 EUR
$1,249 USD
View
B
Retailer 10
-
€1,133 EUR
A$1,947 AUD
View
B
Retailer 11
-
€1,207 EUR
£1,062 GBP
View
Retailer 12
-
€1,651 EUR
$1,845 USD
View
Price last confirmed 14 days ago
Most Expensive
B
Brilliant Earth
21476681Y · Oct 30
€1,656 EUR
$1,850 USD
View
12 more retailers have this diamond
Prices start from €412 EURSave up to €1,243 EUR

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
€412 EUR