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Radiant|Lab Grown|IGI

4.51ct D VS1 Radiant Lab Grown Diamond

ID • D/VS1 • IGI LG839647920

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

Certificate IGI LG839647920

Diamond specifications and retailer prices

From $1,494 AUD
HK$8,200 HKD
As of October 30, 2026
Save $5,681 AUD (79%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $7,175 AUD at Rare Carat · As of October 28, 2026
View at Rare Carat

About this 4.51ct lab-grown radiant diamond

This 4.51ct lab-grown radiant sits in the three to five carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG839647920 or 839647920. Listed at 17 retailers as of October 28, 2026, with prices from $1,494 to $7,175, a $5,681 spread on the same certified stone. Rare Carat lists it at $7,175. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

4.51
Carat
D
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.2°
Pavilion angle32.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG839647920
Dimensions12.11 × 8.00 × 5.28 mm
L/W Ratio1.51
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.11 mm8.00 mm4.51 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG839647920
Side View
Table 61.0%Crown 44.2°Girdle: MediumPavilion 32.4°Culet: NoneDepth 66.0%

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: $7,175 AUD|Low: $1,237 AUD|High: $7,253 AUD|Avg: $3,284 AUD|-1.1%
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
Retailer 18
October 31, 2026
Retailer 8$1,237 AUD
Retailer 5$1,237 AUD
Retailer 14$1,494 AUD
Retailer 6$1,530 AUD
Retailer 16$1,940 AUD
Retailer 11$1,955 AUD
Retailer 17$2,071 AUD
Retailer 13$2,705 AUD
Retailer 15$2,746 AUD
Retailer 2$2,782 AUD
Retailer 7$3,499 AUD
Retailer 18$4,119 AUD
Retailer 9$4,314 AUD
Retailer 3$4,336 AUD
Retailer 4$4,432 AUD
Retailer 12$4,815 AUD
Retailer 10$6,119 AUD
Rare Carat$7,175 AUD

21 data points across 18 retailers

17 retailers$1,494 AUD to $7,175 AUD

Retailer 1
-
$1,237 AUD
£684 GBP
Price last confirmed 23 days ago
A
Retailer 2
-
$1,494 AUD
HK$8,200 HKD
View
A
Retailer 3
-
$1,530 AUD
$1,075 USD
View
Retailer 4
-
$1,940 AUD
€1,298 EUR
View
Price last confirmed 7 days ago
A
Retailer 5
-
$1,955 AUD
£1,081 GBP
View
A
Retailer 6
-
$2,071 AUD
$1,455 USD
View
A
Retailer 7
-
$2,705 AUD
ZAR 30,695 ZAR
View
Retailer 8
-
$2,746 AUD
View
Price last confirmed 9 days ago
B+
Retailer 9
-
$2,782 AUD
$1,954 USD
View
B+
Retailer 10
-
$3,499 AUD
$2,458 USD
View
B+
Retailer 11
-
$4,119 AUD
$2,893 USD
View
B+
Retailer 12
-
$4,314 AUD
SGD 4,095 SGD
View
B+
Retailer 13
-
$4,336 AUD
$3,046 USD
View
B+
Retailer 14
-
$4,432 AUD
$3,113 USD
View
B+
Retailer 15
-
$4,815 AUD
£2,663 GBP
View
B
Retailer 16
-
$6,119 AUD
$4,298 USD
View
Most Expensive
B
Rare Carat
172691-BB · Oct 28
$7,175 AUD
$5,040 USD
View
16 more retailers have this diamond
Prices start from $1,494 AUDSave up to $5,681 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
4.51ct Radiant
$1,494 AUD