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Radiant|Lab Grown|IGI

2.66ct E IF Radiant Lab Grown Diamond

EX • E/IF • IGI LG778667127

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

Certificate IGI LG778667127

Diamond specifications and retailer prices

From $1,412 AUD
$992 USD
As of October 30, 2026
Save $6,005 AUD (81%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: $7,417 AUD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 2.66ct lab-grown radiant diamond

This 2.66ct lab-grown radiant sits in the two to three carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG778667127 or 778667127. Listed at 27 retailers as of October 30, 2026, with prices from $1,412 to $7,417, a $6,005 spread on the same certified stone. Brilliant Earth lists it at $7,417. 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

2.66
Carat
E
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.6°
Pavilion angle34°
OriginLab Grown
Grading LabIGI
CertificateIGI LG778667127
Dimensions8.09 × 7.41 × 4.83 mm
L/W Ratio1.09
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.09 mm7.41 mm2.66 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG778667127
Side View
Table 67.0%Crown 42.6°Girdle: Slightly ThickPavilion 34°Culet: NoneDepth 65.2%

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: $7,417 AUD|Low: $1,355 AUD|High: $7,417 AUD|Avg: $3,699 AUD
Brilliant Earth
Retailer 2
Retailer 3
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Retailer 5
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Retailer 7
Retailer 8
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Retailer 17
Retailer 18
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Retailer 21
Retailer 22
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Retailer 24
November 2, 2026
Retailer 6$1,412 AUD
Retailer 5$1,536 AUD
Retailer 9$1,580 AUD
Retailer 12$1,637 AUD
Retailer 24$1,886 AUD
Retailer 4$1,895 AUD
Retailer 11$1,993 AUD
Retailer 3$2,342 AUD
Retailer 2$2,527 AUD
Retailer 20$2,605 AUD
Retailer 8$3,069 AUD
Retailer 22$3,133 AUD
Retailer 19$3,887 AUD
Retailer 15$3,999 AUD
Retailer 7$4,106 AUD
Retailer 23$4,225 AUD
Retailer 16$4,513 AUD
Retailer 18$5,077 AUD
Retailer 10$5,295 AUD
Retailer 14$5,490 AUD
Retailer 21$5,537 AUD
Retailer 13$5,554 AUD
Retailer 17$5,707 AUD
Brilliant Earth$7,417 AUD

33 data points across 24 retailers

27 retailers$1,412 AUD to $7,417 AUD

A
Cheapest Retailer
-
$1,412 AUD
$992 USD
A
Retailer 2
-
$1,536 AUD
$1,079 USD
View
A
Retailer 3
-
$1,580 AUD
$1,110 USD
View
Final sale: no returns
A
Retailer 4
-
$1,637 AUD
$1,150 USD
View
Retailer 5
-
$1,637 AUD
$1,150 USD
View
Price last confirmed 15 days ago
A
Retailer 6
-
$1,886 AUD
$1,325 USD
View
A
Retailer 7
-
$1,895 AUD
HK$10,400 HKD
View
A
Retailer 8
-
$1,993 AUD
$1,400 USD
View
A
Retailer 9
-
$2,342 AUD
$1,645 USD
View
A
Retailer 10
-
$2,527 AUD
£1,397 GBP
View
A
Retailer 11
-
$2,605 AUD
€1,743 EUR
View
A
Retailer 12
-
$3,069 AUD
$2,156 USD
View
A
Retailer 13
-
$3,133 AUD
$2,201 USD
View
A
Retailer 14
-
$3,219 AUD
$2,261 USD
View
B+
Retailer 15
-
$3,887 AUD
View
B+
Retailer 16
-
$3,999 AUD
$2,809 USD
View
B+
Retailer 17
-
$4,106 AUD
$2,884 USD
View
B+
Retailer 18
-
$4,225 AUD
ZAR 47,940 ZAR
View
B+
Retailer 19
-
$4,513 AUD
£2,496 GBP
View
B+
Retailer 20
-
$4,837 AUD
$3,398 USD
View
B+
Retailer 21
-
$5,077 AUD
$3,566 USD
View
B+
Retailer 22
-
$5,295 AUD
$3,720 USD
View
B+
Retailer 23
-
$5,490 AUD
SGD 5,211 SGD
View
B+
Retailer 24
-
$5,537 AUD
View
B+
Retailer 25
-
$5,554 AUD
£3,072 GBP
View
B+
Retailer 26
-
$5,707 AUD
$4,009 USD
View
Most Expensive
B
Brilliant Earth
18340359A · Oct 31
$7,417 AUD
$5,210 USD
View
26 more retailers have this diamond
Prices start from $1,412 AUDSave up to $6,005 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
2.66ct Radiant
$1,412 AUD