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Radiant|Lab Grown|IGI

1.55ct D VVS1 Radiant Lab Grown Diamond

ID • D/VVS1 • IGI LG685577864

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

Certificate IGI LG685577864

Diamond specifications and retailer prices

From $341 AUD
As of November 4, 2026
Save $3,850 AUD (92%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $4,319 AUD at Brilliant Earth · As of October 16, 2026
View at Brilliant Earth

About this 1.55ct lab-grown radiant diamond

This 1.55ct lab-grown radiant sits in the one-and-a-half to two carat band, graded D colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG685577864 or 685577864. Listed at 20 retailers as of November 4, 2026, with a 1130% 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

1.55
Carat
D
Colour
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.6°
Pavilion angle34.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG685577864
Dimensions8.12 × 5.66 × 3.85 mm
L/W Ratio1.43
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.12 mm5.66 mm1.55 ctD / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG685577864
Side View
Table 64.0%Crown 43.6°Girdle: Slightly ThickPavilion 34.4°Culet: NoneDepth 68.0%

Caratlytics Score

How it works →
A+
Exceptional
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 4
Current: $4,319 AUD|Low: $341 AUD|High: $4,319 AUD|Avg: $1,298 AUD
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 5, 2026
Retailer 13$341 AUD
Retailer 15$381 AUD
Retailer 3$395 AUD
Retailer 11$422 AUD
Retailer 9$425 AUD
Retailer 18$566 AUD
Retailer 10$770 AUD
Retailer 8$780 AUD
Retailer 6$813 AUD
Retailer 12$882 AUD
Retailer 4$1,096 AUD
Retailer 17$1,193 AUD
Retailer 16$1,498 AUD
Retailer 7$1,736 AUD
Retailer 14$1,738 AUD
Retailer 5$1,889 AUD
Retailer 2$3,264 AUD
Brilliant Earth$4,319 AUD

23 data points across 18 retailers

20 retailers$341 AUD to $4,191 AUD

A+
Cheapest Retailer
-
$341 AUD
A
Retailer 2
-
$381 AUD
View
Final sale: no returns
A
Retailer 3
-
$395 AUD
View
A
Retailer 4
-
$422 AUD
View
Retailer 5
-
$425 AUD
View
Price last confirmed 11 days ago
B+
Retailer 6
-
$566 AUD
View
A
Retailer 7
-
$780 AUD
View
A
Retailer 8
-
$813 AUD
View
A
Retailer 9
-
$882 AUD
View
B+
Retailer 10
-
$1,096 AUD
View
B+
Retailer 11
-
$1,193 AUD
View
B+
Retailer 12
-
$1,498 AUD
View
B
Retailer 13
-
$1,711 AUD
View
B+
Retailer 14
-
$1,736 AUD
View
B+
Retailer 15
-
$1,738 AUD
View
B+
Retailer 16
-
$1,889 AUD
View
Retailer 17
-
$1,954 AUD
View
Price last confirmed 17 days ago
B
Retailer 18
-
$3,264 AUD
View
B
Retailer 19
-
$4,191 AUD
View
Most Expensive
Brilliant Earth
14384747Y · Oct 16
$4,319 AUD
$3,030 USD
View
Price last confirmed 19 days ago
19 more retailers have this diamond
Prices start from $341 AUDSave up to $3,850 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+
1.55ct Radiant
$341 AUD