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Radiant|Lab Grown|IGI

0.51ct D FL Radiant Lab Grown Diamond

VG • D/FL • IGI LG818658686

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

Certificate IGI LG818658686

Diamond specifications and retailer prices

From $340 AUD
$238 USD
As of November 1, 2026
Save $1,422 AUD (81%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,761 AUD at Reve Diamonds · As of November 1, 2026
View at Reve Diamonds

About this 0.51ct lab-grown radiant diamond

This 0.51ct lab-grown radiant sits in the half to three-quarter carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG818658686 or 818658686. Listed at 15 retailers as of November 1, 2026, with prices from $340 to $1,761, a $1,422 spread on the same certified stone. Reve Diamonds lists it at $1,761. 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

0.51
Carat
D
Colour
FL
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle29°
Pavilion angle38.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818658686
Dimensions5.78 × 4.05 × 2.67 mm
L/W Ratio1.43
Girdle conditionFaceted
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
5.78 mm4.05 mm0.51 ctD / FL
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818658686
Side View
Table 70.0%Crown 29°Girdle: Slightly ThickPavilion 38.2°Culet: NoneDepth 65.9%

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: Nov 1
Current: $684 AUD|Low: $340 AUD|High: $1,761 AUD|Avg: $905 AUD|+1.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Reve Diamonds
November 1, 2026
Retailer 9$340 AUD
Retailer 10$519 AUD
Retailer 7$531 AUD
Retailer 4$632 AUD
Retailer 1$684 AUD
Retailer 3$697 AUD
Retailer 8$809 AUD
Retailer 6$1,214 AUD
Retailer 2$1,286 AUD
Retailer 5$1,511 AUD
Reve Diamonds$1,761 AUD

28 data points across 11 retailers

15 retailers$340 AUD to $1,761 AUD

Retailer 1
-
$304 AUD
$213 USD
Price last confirmed 25 days ago
A
Retailer 2
-
$340 AUD
$238 USD
View
Final sale: no returns
Retailer 3
-
$377 AUD
$264 USD
View
Price last confirmed 21 days ago
Retailer 4
-
$377 AUD
$264 USD
View
Price last confirmed 30 days ago
B+
Retailer 5
-
$519 AUD
$364 USD
View
B+
Retailer 6
-
$531 AUD
$372 USD
View
B+
Retailer 7
-
$632 AUD
€422 EUR
View
B+
Retailer 8
-
$684 AUD
ZAR 7,748 ZAR
View
B+
Retailer 9
-
$697 AUD
£384 GBP
View
B
Retailer 10
-
$809 AUD
$567 USD
View
Retailer 11
-
$1,210 AUD
$848 USD
View
Price last confirmed 32 days ago
B
Retailer 12
-
$1,214 AUD
$851 USD
View
B
Retailer 13
-
$1,286 AUD
$901 USD
View
B
Retailer 14
-
$1,511 AUD
£834 GBP
View
Most Expensive
B
Reve Diamonds
A8A2A97B3 · Nov 1
$1,761 AUD
$1,234 USD
View
14 more retailers have this diamond
Prices start from $340 AUDSave up to $1,422 AUD

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
0.51ct Radiant
$340 AUD