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Radiant|Lab Grown|IGI

2.78ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG724573630

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

Certificate IGI LG724573630

Diamond specifications and retailer prices

From $1,258 AUD
$884 USD
As of October 30, 2026
Save $9,917 AUD (89%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $11,175 AUD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 2.78ct lab-grown radiant diamond

This 2.78ct lab-grown radiant sits in the two to three carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG724573630 or 724573630. Listed at 23 retailers as of October 30, 2026, with prices from $1,258 to $11,175, a $9,917 spread on the same certified stone. Do Amore Diamonds lists it at $11,175. 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

2.78
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.4°
Pavilion angle36.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG724573630
Dimensions9.91 × 7.10 × 4.72 mm
L/W Ratio1.40
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
9.91 mm7.10 mm2.78 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG724573630
Side View
Table 62.0%Crown 40.4°Girdle: MED-STKPavilion 36.9°Culet: NoneDepth 66.5%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $11,175 AUD|Low: $1,258 AUD|High: $12,713 AUD|Avg: $3,751 AUD|-12.1%
Do Amore Diamonds
Retailer 2
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Retailer 22
October 31, 2026
Retailer 3$1,258 AUD
Retailer 22$1,368 AUD
Retailer 12$1,407 AUD
Retailer 6$1,459 AUD
Retailer 21$1,644 AUD
Retailer 16$1,778 AUD
Retailer 9$1,942 AUD
Retailer 4$2,343 AUD
Retailer 2$2,463 AUD
Retailer 7$3,018 AUD
Retailer 20$3,101 AUD
Retailer 10$3,317 AUD
Retailer 19$3,820 AUD
Retailer 17$4,155 AUD
Retailer 8$4,448 AUD
Retailer 5$4,564 AUD
Retailer 18$5,469 AUD
Retailer 14$5,696 AUD
Retailer 11$5,735 AUD
Retailer 15$6,270 AUD
Retailer 13$10,193 AUD
Do Amore Diamonds$11,175 AUD

32 data points across 22 retailers

23 retailers$1,258 AUD to $11,175 AUD

A
Cheapest Retailer
-
$1,258 AUD
$884 USD
A
Retailer 2
-
$1,368 AUD
$961 USD
View
A
Retailer 3
-
$1,407 AUD
$988 USD
View
Final sale: no returns
A
Retailer 4
-
$1,459 AUD
$1,025 USD
View
A
Retailer 5
-
$1,644 AUD
$1,155 USD
View
A
Retailer 6
-
$1,778 AUD
£983 GBP
View
A
Retailer 7
-
$1,942 AUD
$1,364 USD
View
A
Retailer 8
-
$2,343 AUD
$1,646 USD
View
A
Retailer 9
-
$2,463 AUD
£1,363 GBP
View
A
Retailer 10
-
$3,018 AUD
$2,120 USD
View
A
Retailer 11
-
$3,101 AUD
$2,178 USD
View
A
Retailer 12
-
$3,317 AUD
$2,330 USD
View
Retailer 13
-
$3,472 AUD
$2,439 USD
View
Price last confirmed 30 days ago
Retailer 14
-
$3,820 AUD
View
Price last confirmed 9 days ago
A
Retailer 15
-
$4,155 AUD
ZAR 47,151 ZAR
View
B+
Retailer 16
-
$4,448 AUD
£2,460 GBP
View
B+
Retailer 17
-
$4,564 AUD
$3,206 USD
View
B+
Retailer 18
-
$5,469 AUD
£3,025 GBP
View
B+
Retailer 19
-
$5,696 AUD
SGD 5,407 SGD
View
B+
Retailer 20
-
$5,735 AUD
$4,028 USD
View
Retailer 21
-
$6,270 AUD
View
Price last confirmed 26 days ago
B
Retailer 22
-
$10,193 AUD
$7,160 USD
View
Most Expensive
B
Do Amore Diamonds
27-768322126 · Oct 31
$11,175 AUD
$7,850 USD
View
22 more retailers have this diamond
Prices start from $1,258 AUDSave up to $9,917 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
2.78ct Radiant
$1,258 AUD