CaratHunter
Plans
Radiant|Lab Grown|IGI

1.21ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG735580809

Shape and cutting style on the report: Cut cornered rectangular mixed cut

Certificate IGI LG735580809

Diamond specifications and retailer prices

From €262 EUR
$293 USD
As of October 30, 2026
Save €1,071 EUR (80%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: €1,719 EUR at Rare Carat · As of September 28, 2026
View at Rare Carat

About this 1.21ct lab-grown radiant diamond

This 1.21ct lab-grown radiant sits in the classic one-carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG735580809 or 735580809. Listed at 20 retailers as of October 30, 2026, with a 409% 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

1.21
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle25.5°
Pavilion angle33.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG735580809
Dimensions7.65 × 4.90 × 3.18 mm
L/W Ratio1.56
Culet sizeLong
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.65 mm4.90 mm1.21 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG735580809
Side View
Table 60.0%Crown 25.5°Girdle: MED-STKPavilion 33.4°Culet: LNGDepth 64.9%

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: Oct 30
Current: €1,719 EUR|Low: €252 EUR|High: €1,719 EUR|Avg: €712 EUR
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
November 1, 2026
Retailer 16€262 EUR
Retailer 7€294 EUR
Retailer 5€304 EUR
Retailer 3€325 EUR
Retailer 6€325 EUR
Retailer 15€452 EUR
Retailer 13€465 EUR
Retailer 10€524 EUR
Retailer 12€559 EUR
Retailer 9€576 EUR
Retailer 14€866 EUR
Retailer 4€1,045 EUR
Retailer 11€1,088 EUR
Retailer 8€1,269 EUR
Retailer 2€1,303 EUR
Rare Carat€1,719 EUR

43 data points across 16 retailers

20 retailers€262 EUR to €1,334 EUR

A
Cheapest Retailer
-
€262 EUR
$293 USD
A
Retailer 2
-
€294 EUR
$328 USD
View
Final sale: no returns
A
Retailer 3
-
€304 EUR
$340 USD
View
Retailer 4
-
€325 EUR
$363 USD
View
Price last confirmed 7 days ago
A
Retailer 5
-
€325 EUR
$363 USD
View
A
Retailer 6
-
€452 EUR
$505 USD
View
A
Retailer 7
-
€465 EUR
$520 USD
View
A
Retailer 8
-
€524 EUR
View
A
Retailer 9
-
€559 EUR
ZAR 10,081 ZAR
View
A
Retailer 10
-
€560 EUR
$626 USD
View
A
Retailer 11
-
€576 EUR
£506 GBP
View
B+
Retailer 12
-
€866 EUR
$968 USD
View
B
Retailer 13
-
€1,045 EUR
$1,167 USD
View
B+
Retailer 14
-
€1,088 EUR
A$1,870 AUD
View
B
Retailer 15
-
€1,088 EUR
$1,216 USD
View
B
Retailer 16
-
€1,199 EUR
$1,339 USD
View
B
Retailer 17
-
€1,269 EUR
£1,116 GBP
View
B
Retailer 18
-
€1,303 EUR
£1,146 GBP
View
B
Retailer 19
-
€1,334 EUR
$1,490 USD
View
Most Expensive
Rare Carat
91965A_l_735580809 · Sep 28
€1,719 EUR
$1,920 USD
View
Price last confirmed 34 days ago
19 more retailers have this diamond
Prices start from €262 EURSave up to €1,071 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
1.21ct Radiant
€262 EUR