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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 €296 EUR
$331 USD
As of October 30, 2026
Save €2,604 EUR (90%) vs most expensive(unlock to see where)
30 retailers carry this diamond
Most expensive: €2,900 EUR at Brilliant Earth · As of October 31, 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 30, 2026, with prices from €296 to €2,900, a €2,604 spread on the same certified stone. Brilliant Earth lists it at €2,900. 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
Color
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

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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: €2,900 EUR|Low: €296 EUR|High: €4,144 EUR|Avg: €1,119 EUR|-30.0%
Brilliant Earth
Retailer 2
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Retailer 22
October 31, 2026
Retailer 4€296 EUR
Retailer 13€355 EUR
Retailer 11€424 EUR
Retailer 17€465 EUR
Retailer 5€519 EUR
Retailer 2€599 EUR
Retailer 9€607 EUR
Retailer 21€632 EUR
Retailer 16€658 EUR
Retailer 10€837 EUR
Retailer 20€857 EUR
Retailer 3€1,079 EUR
Retailer 6€1,219 EUR
Retailer 12€1,221 EUR
Retailer 14€1,233 EUR
Retailer 15€1,235 EUR
Retailer 8€1,390 EUR
Retailer 7€1,443 EUR
Retailer 19€1,481 EUR
Retailer 18€1,530 EUR
Retailer 22€2,390 EUR
Brilliant Earth€2,900 EUR

34 data points across 22 retailers

30 retailers€296 EUR to €2,900 EUR

A
Cheapest Retailer
-
€296 EUR
$331 USD
Retailer 2
-
€296 EUR
$331 USD
View
Price last confirmed 24 days ago
Retailer 3
-
€309 EUR
$345 USD
View
Price last confirmed 32 days ago
A
Retailer 4
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€355 EUR
$397 USD
View
Final sale: no returns
Retailer 5
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€359 EUR
$401 USD
View
Price last confirmed 35 days ago
Retailer 6
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€368 EUR
$411 USD
View
Price last confirmed 29 days ago
Retailer 7
-
€379 EUR
$423 USD
View
Price last confirmed 33 days ago
A
Retailer 8
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€424 EUR
HK$3,700 HKD
View
A
Retailer 9
-
€465 EUR
$520 USD
View
A
Retailer 10
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€519 EUR
$580 USD
View
A
Retailer 11
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€599 EUR
View
A
Retailer 12
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€607 EUR
$678 USD
View
A
Retailer 13
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€632 EUR
ZAR 11,405 ZAR
View
A
Retailer 14
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€658 EUR
£579 GBP
View
A
Retailer 15
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€837 EUR
$935 USD
View
A
Retailer 16
-
€857 EUR
A$1,473 AUD
View
B+
Retailer 17
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€1,079 EUR
$1,205 USD
View
Retailer 18
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€1,182 EUR
$1,321 USD
View
Price last confirmed 22 days ago
B+
Retailer 19
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€1,182 EUR
$1,321 USD
View
B+
Retailer 20
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€1,219 EUR
$1,362 USD
View
B+
Retailer 21
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€1,221 EUR
$1,365 USD
View
Retailer 22
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€1,233 EUR
$1,377 USD
View
Price last confirmed 31 days ago
B+
Retailer 23
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€1,233 EUR
SGD 1,862 SGD
View
B+
Retailer 24
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€1,235 EUR
$1,380 USD
View
B+
Retailer 25
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€1,390 EUR
$1,553 USD
View
B+
Retailer 26
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€1,443 EUR
$1,613 USD
View
B+
Retailer 27
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€1,481 EUR
£1,303 GBP
View
B+
Retailer 28
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€1,530 EUR
A$2,629 AUD
View
Retailer 29
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€2,390 EUR
$2,670 USD
View
Price last confirmed 11 days ago
Most Expensive
B
Brilliant Earth
12598441A · Oct 31
€2,900 EUR
$3,240 USD
View
29 more retailers have this diamond
Prices start from €296 EURSave up to €2,604 EUR

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
€296 EUR