CaratHunter
Plans
Radiant|Lab Grown|IGI

1.77ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG665410575

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

Certificate IGI LG665410575

Diamond specifications and retailer prices

From $471 AUD
$331 USD
As of October 27, 2026
Save $6,119 AUD (93%) vs most expensive(unlock to see where)
30 retailers carry this diamond
Most expensive: $6,590 AUD at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 1.77ct lab-grown radiant diamond

This 1.77ct lab-grown radiant sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG665410575 or 665410575. Listed at 30 retailers as of October 27, 2026, with prices from $471 to $6,590, a $6,119 spread on the same certified stone. Brilliant Earth lists it at $6,590. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.77
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.7°
Pavilion angle33.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG665410575
Dimensions6.16 × 6.16 × 3.99 mm
L/W Ratio1.00
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
6.16 mm6.16 mm1.77 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG665410575
Side View
Table 61.0%Crown 40.7°Girdle: MediumPavilion 33.9°Culet: NoneDepth 64.8%

Caratlytics Score

How it works →
A
Excellent
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: Oct 27
Current: $6,590 AUD|Low: $471 AUD|High: $6,590 AUD|Avg: $1,759 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
Retailer 19
Retailer 20
Retailer 21
Retailer 22
October 29, 2026
Retailer 3$471 AUD
Retailer 19$528 AUD
Retailer 10$674 AUD
Retailer 18$804 AUD
Retailer 4$826 AUD
Retailer 21$949 AUD
Retailer 8$965 AUD
Retailer 17$1,005 AUD
Retailer 2$1,044 AUD
Retailer 9$1,330 AUD
Retailer 16$1,363 AUD
Retailer 22$1,715 AUD
Retailer 5$1,939 AUD
Retailer 12$1,942 AUD
Retailer 14$1,961 AUD
Retailer 15$1,964 AUD
Retailer 7$2,211 AUD
Retailer 6$2,295 AUD
Retailer 13$2,355 AUD
Retailer 11$2,453 AUD
Retailer 20$3,800 AUD
Brilliant Earth$6,590 AUD

34 data points across 22 retailers

30 retailers$471 AUD to $6,590 AUD

A
Cheapest Retailer
-
$471 AUD
$331 USD
A
Retailer 2
-
$471 AUD
$331 USD
View
Price last confirmed 21 days ago
A
Retailer 3
-
$491 AUD
$345 USD
View
Price last confirmed 29 days ago
A
Retailer 4
-
$528 AUD
$371 USD
View
Final sale: no returns
A
Retailer 5
-
$571 AUD
$401 USD
View
Price last confirmed 32 days ago
A
Retailer 6
-
$585 AUD
$411 USD
View
Price last confirmed 26 days ago
A
Retailer 7
-
$602 AUD
$423 USD
View
Price last confirmed 30 days ago
A
Retailer 8
-
$674 AUD
HK$3,700 HKD
View
A
Retailer 9
-
$804 AUD
$565 USD
View
A
Retailer 10
-
$826 AUD
$580 USD
View
A
Retailer 11
-
$949 AUD
€635 EUR
View
A
Retailer 12
-
$965 AUD
$678 USD
View
A
Retailer 13
-
$1,005 AUD
ZAR 11,405 ZAR
View
A
Retailer 14
-
$1,044 AUD
£577 GBP
View
A
Retailer 15
-
$1,330 AUD
$935 USD
View
A
Retailer 16
-
$1,363 AUD
View
A
Retailer 17
-
$1,715 AUD
$1,205 USD
View
B+
Retailer 18
-
$1,880 AUD
$1,321 USD
View
Price last confirmed 19 days ago
B+
Retailer 19
-
$1,880 AUD
$1,321 USD
View
B+
Retailer 20
-
$1,939 AUD
$1,362 USD
View
B+
Retailer 21
-
$1,942 AUD
$1,365 USD
View
B+
Retailer 22
-
$1,960 AUD
$1,377 USD
View
Price last confirmed 28 days ago
B+
Retailer 23
-
$1,961 AUD
SGD 1,862 SGD
View
B+
Retailer 24
-
$1,964 AUD
$1,380 USD
View
B+
Retailer 25
-
$2,211 AUD
$1,553 USD
View
B+
Retailer 26
-
$2,295 AUD
$1,613 USD
View
B+
Retailer 27
-
$2,355 AUD
£1,303 GBP
View
B+
Retailer 28
-
$2,453 AUD
View
Price last confirmed 26 days ago
B+
Retailer 29
-
$3,800 AUD
$2,670 USD
View
Price last confirmed 8 days ago
Most Expensive
B
Brilliant Earth
12598441A · Oct 28
$6,590 AUD
$4,630 USD
View
29 more retailers have this diamond
Prices start from $471 AUDSave up to $6,119 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
1.77ct Radiant
$471 AUD