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Marquise|Lab Grown|IGI

1.70ct E FL Marquise Lab Grown Diamond

EX • E/FL • IGI LG817693361

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG817693361

Diamond specifications and retailer prices

From $1,284 AUD
$902 USD
As of October 30, 2026
Save $4,268 AUD (77%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $5,552 AUD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.7ct lab-grown marquise diamond

This 1.7ct lab-grown marquise sits in the one-and-a-half to two carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG817693361 or 817693361. Listed at 21 retailers as of October 30, 2026, with prices from $1,284 to $5,552, a $4,268 spread on the same certified stone. Brilliant Earth lists it at $5,552. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.70
Carat
E
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG817693361
Dimensions11.99 × 6.28 × 3.93 mm
L/W Ratio1.91
Girdle conditionFaceted
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
11.99 mm6.28 mm1.70 ctE / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG817693361
Side View
Table 57.0%Crown 35.6°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 62.6%

Caratlytics Score

How it works →
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: $5,552 AUD|Low: $1,284 AUD|High: $7,275 AUD|Avg: $3,533 AUD|-23.7%
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
October 30, 2026
Retailer 4$1,284 AUD
Retailer 19$1,397 AUD
Retailer 6$1,436 AUD
Retailer 16$1,489 AUD
Retailer 5$1,731 AUD
Retailer 15$1,737 AUD
Retailer 20$2,081 AUD
Retailer 2$2,293 AUD
Retailer 13$2,375 AUD
Retailer 7$2,387 AUD
Retailer 14$2,738 AUD
Retailer 10$3,313 AUD
Retailer 3$4,122 AUD
Retailer 17$4,187 AUD
Retailer 8$4,419 AUD
Retailer 9$4,888 AUD
Retailer 11$5,001 AUD
Retailer 18$5,057 AUD
Retailer 12$5,174 AUD
Brilliant Earth$5,552 AUD

35 data points across 20 retailers

21 retailers$1,284 AUD to $5,552 AUD

A
Cheapest Retailer
-
$1,284 AUD
$902 USD
A
Retailer 2
-
$1,397 AUD
$981 USD
View
A
Retailer 3
-
$1,436 AUD
$1,009 USD
View
Final sale: no returns
A
Retailer 4
-
$1,489 AUD
$1,046 USD
View
A
Retailer 5
-
$1,731 AUD
HK$9,500 HKD
View
A
Retailer 6
-
$1,737 AUD
$1,220 USD
View
Retailer 7
-
$1,863 AUD
$1,309 USD
View
Price last confirmed 13 days ago
A
Retailer 8
-
$2,081 AUD
$1,462 USD
View
A
Retailer 9
-
$2,293 AUD
£1,268 GBP
View
A
Retailer 10
-
$2,375 AUD
€1,589 EUR
View
A
Retailer 11
-
$2,387 AUD
$1,677 USD
View
B+
Retailer 12
-
$2,738 AUD
ZAR 31,066 ZAR
View
B+
Retailer 13
-
$3,313 AUD
$2,327 USD
View
B+
Retailer 14
-
$4,122 AUD
£2,280 GBP
View
B
Retailer 15
-
$4,187 AUD
$2,941 USD
View
B+
Retailer 16
-
$4,419 AUD
$3,104 USD
View
B
Retailer 17
-
$4,888 AUD
$3,433 USD
View
B
Retailer 18
-
$5,001 AUD
SGD 4,747 SGD
View
B
Retailer 19
-
$5,057 AUD
£2,797 GBP
View
B
Retailer 20
-
$5,174 AUD
$3,634 USD
View
Most Expensive
B
Brilliant Earth
20860257A · Oct 30
$5,552 AUD
$3,900 USD
View
20 more retailers have this diamond
Prices start from $1,284 AUDSave up to $4,268 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
1.70ct Marquise
$1,284 AUD