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Radiant|Lab Grown|IGI

1.78ct I VVS2 Radiant Lab Grown Diamond

ID • I/VVS2 • IGI LG487108788

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

Certificate IGI LG487108788

Diamond specifications and retailer prices

From $1,810 AUD
As of November 2, 2026
Save $3,518 AUD (66%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $6,148 AUD at Flawless Fine Jewelry · As of November 3, 2026
View at Flawless Fine Jewelry

About this 1.78ct lab-grown radiant diamond

This 1.78ct lab-grown radiant sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and VVS2 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG487108788 or 487108788. Listed at 12 retailers as of November 2, 2026, with a 194% 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

1.78
Carat
I
Colour
VVS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.8°
Pavilion angle29.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG487108788
Dimensions8.07 × 6.01 × 3.98 mm
L/W Ratio1.34
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
8.07 mm6.01 mm1.78 ctI / VVS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG487108788
Side View
Table 64.5%Crown 44.8°Girdle: MediumPavilion 29.3°Culet: NoneDepth 66.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $6,148 AUD|Low: $1,810 AUD|High: $9,377 AUD|Avg: $4,572 AUD
Flawless Fine Jewelry
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 3, 2026
Retailer 7$1,810 AUD
Retailer 9$2,797 AUD
Retailer 13$3,043 AUD
Retailer 10$3,244 AUD
Retailer 5$3,480 AUD
Retailer 3$3,485 AUD
Retailer 4$4,152 AUD
Retailer 12$4,460 AUD
Retailer 11$5,080 AUD
Retailer 8$5,329 AUD
Retailer 2$5,983 AUD
Flawless Fine Jewelry$6,148 AUD
Retailer 6$9,267 AUD

22 data points across 13 retailers

12 retailers$1,810 AUD to $5,329 AUD

B+
Cheapest Retailer
-
$1,810 AUD
B
Retailer 2
-
$2,797 AUD
View
B
Retailer 3
-
$3,043 AUD
View
Retailer 4
-
$3,244 AUD
View
Price last confirmed 25 days ago
B
Retailer 5
-
$3,244 AUD
View
B
Retailer 6
-
$3,485 AUD
View
B
Retailer 7
-
$4,460 AUD
View
B
Retailer 8
-
$5,080 AUD
View
B
Retailer 9
-
$5,329 AUD
View
Retailer 10
-
$5,983 AUD
View
Price under review
Most Expensive
Flawless Fine Jewelry
18DE7A6D6 · Nov 3
$6,148 AUD
£3,396 GBP
View
Price under review
10 more retailers have this diamond
Prices start from $1,810 AUDSave up to $3,518 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.

B+
1.78ct Radiant
$1,810 AUD