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Radiant|Lab Grown|IGI

4.51ct D VS1 Radiant Lab Grown Diamond

ID • D/VS1 • IGI LG787610099

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

Certificate IGI LG787610099

Diamond specifications and retailer prices

From $1,172 AUD
$823 USD
As of October 29, 2026
Save $6,003 AUD (84%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $10,342 AUD at Queensmith · As of October 10, 2026
View at Queensmith

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 LG787610099 or 787610099. Listed at 20 retailers as of October 28, 2026, with a 512% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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 angle37.5°
Pavilion angle37.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG787610099
Dimensions12.01 × 7.91 × 5.25 mm
L/W Ratio1.52
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.01 mm7.91 mm4.51 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG787610099
Side View
Table 64.0%Crown 37.5°Girdle: ThickPavilion 37.5°Culet: NoneDepth 66.4%

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 29
Current: $1,945 AUD|Low: $1,006 AUD|High: $7,260 AUD|Avg: $2,755 AUD|-12.9%
Retailer 1
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 29, 2026
Retailer 3$1,048 AUD
Retailer 16$1,172 AUD
Retailer 5$1,216 AUD
Retailer 7$1,216 AUD
Retailer 13$1,502 AUD
Retailer 4$1,725 AUD
Retailer 2$1,740 AUD
Retailer 1$1,945 AUD
Retailer 14$2,010 AUD
Retailer 12$2,587 AUD
Retailer 15$2,602 AUD
Retailer 18$2,994 AUD
Retailer 6$3,479 AUD
Retailer 9$3,942 AUD
Retailer 10$4,189 AUD
Retailer 8$4,332 AUD
Retailer 11$4,798 AUD
Retailer 17$7,175 AUD

37 data points across 18 retailers

20 retailers$1,172 AUD to $7,175 AUD

Retailer 1
-
$1,048 AUD
$736 USD
Price last confirmed 12 days ago
A
Retailer 2
-
$1,172 AUD
$823 USD
View
Final sale: no returns
Retailer 3
-
$1,216 AUD
$854 USD
View
Price last confirmed 15 days ago
Retailer 4
-
$1,216 AUD
$854 USD
View
Price last confirmed 12 days ago
A
Retailer 5
-
$1,502 AUD
$1,055 USD
View
A
Retailer 6
-
$1,725 AUD
$1,212 USD
View
B+
Retailer 7
-
$1,740 AUD
$1,222 USD
View
A
Retailer 8
-
$1,945 AUD
£1,076 GBP
View
Retailer 9
-
$2,010 AUD
€1,345 EUR
View
Price last confirmed 8 days ago
A
Retailer 10
-
$2,587 AUD
ZAR 29,354 ZAR
View
Retailer 11
-
$2,602 AUD
View
Price last confirmed 10 days ago
B+
Retailer 12
-
$2,994 AUD
$2,103 USD
View
B+
Retailer 13
-
$3,479 AUD
$2,444 USD
View
B+
Retailer 14
-
$3,942 AUD
$2,769 USD
View
B+
Retailer 15
-
$4,109 AUD
$2,886 USD
View
B+
Retailer 16
-
$4,189 AUD
$2,943 USD
View
B+
Retailer 17
-
$4,332 AUD
$3,043 USD
View
B+
Retailer 18
-
$4,798 AUD
£2,654 GBP
View
B
Retailer 19
-
$7,175 AUD
$5,040 USD
View
Most Expensive
Queensmith
LG787610099 · Oct 10
$10,342 AUD
£5,720 GBP
View
Price last confirmed 21 days ago
19 more retailers have this diamond
Prices start from $1,172 AUDSave up to $6,003 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
$1,172 AUD