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Radiant|Lab Grown|IGI

2.50ct G SI1 Radiant Lab Grown Diamond

ID • G/SI1 • IGI LG517202190

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

Certificate IGI LG517202190

Diamond specifications and retailer prices

From $2,823 AUD
As of November 6, 2026
Save $11,616 AUD (80%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $17,679 AUD at Reve Diamonds · As of November 6, 2026
View at Reve Diamonds

About this 2.5ct lab-grown radiant diamond

This 2.5ct lab-grown radiant sits in the two to three carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG517202190 or 517202190. Listed at 14 retailers as of November 5, 2026, with a 411% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

2.50
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41°
Pavilion angle32.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG517202190
Dimensions8.89 × 6.62 × 4.69 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
8.89 mm6.62 mm2.50 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG517202190
Side View
Table 64.0%Crown 41°Girdle: MED-STKPavilion 32.1°Culet: NoneDepth 70.8%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: $8,788 AUD|Low: $2,823 AUD|High: $17,679 AUD|Avg: $9,328 AUD|-2.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Reve Diamonds
November 7, 2026
Retailer 5$2,823 AUD
Retailer 4$5,827 AUD
Retailer 8$6,525 AUD
Retailer 6$6,759 AUD
Retailer 1$8,788 AUD
Retailer 3$8,964 AUD
Retailer 7$10,469 AUD
Retailer 2$14,439 AUD
Reve Diamonds$17,679 AUD

45 data points across 9 retailers

14 retailers$2,823 AUD to $14,439 AUD

B+
Cheapest Retailer
-
$2,823 AUD
B
Retailer 2
-
$5,827 AUD
View
B
Retailer 3
-
$6,107 AUD
View
B
Retailer 4
-
$6,145 AUD
View
B
Retailer 5
-
$6,525 AUD
View
Final sale: no returns
B
Retailer 6
-
$6,759 AUD
View
Retailer 7
-
$6,759 AUD
View
Price last confirmed 26 days ago
B
Retailer 8
-
$6,840 AUD
View
B
Retailer 9
-
$8,446 AUD
View
B
Retailer 10
-
$8,788 AUD
View
B
Retailer 11
-
$8,964 AUD
View
B
Retailer 12
-
$10,469 AUD
View
B
Retailer 13
-
$14,439 AUD
View
Most Expensive
Reve Diamonds
BBCD2517D · Nov 6
$17,679 AUD
$12,148 USD
View
Price under review
13 more retailers have this diamond
Prices start from $2,823 AUDSave up to $11,616 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+
2.50ct Radiant
$2,823 AUD