Round|Lab Grown|IGI

1.70ct E FL Round Lab Grown Diamond

ID • E/FL • IGI LG816615240

Shape and cutting style on the report: Round brilliant

Certificate IGI LG816615240

Diamond specifications and retailer prices

From $439 USD
As of October 29, 2026
Save $2,551 USD (85%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $3,075 USD at Rare Carat · As of October 18, 2026
View at Rare Carat

About this 1.7ct lab-grown round diamond

This 1.7ct lab-grown round 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 LG816615240 or 816615240. Listed at 22 retailers as of October 29, 2026, with a 581% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816615240
Dimensions7.65 × 7.59 × 4.75 mm
L/W Ratio1.01
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
7.65 mm7.59 mm1.70 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816615240
Side View
Table 56.0%Crown 34.8°Girdle: MediumPavilion 40.8°Culet: NoneDepth 62.2%

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 29
Current: $3,075 USD|Low: $439 USD|High: $5,150 USD|Avg: $1,449 USD|-1.1%
Rare Carat
Retailer 2
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Retailer 6
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Retailer 11
Retailer 12
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Retailer 20
November 1, 2026
Retailer 7$439 USD
Retailer 14$490 USD
Retailer 3$491 USD
Retailer 12$544 USD
Retailer 20$544 USD
Retailer 19$690 USD
Retailer 5$855 USD
Retailer 2$896 USD
Retailer 15$902 USD
Retailer 18$935 USD
Retailer 8$1,122 USD
Retailer 6$1,314 USD
Retailer 11$1,748 USD
Retailer 10$1,782 USD
Retailer 9$1,878 USD
Retailer 13$1,892 USD
Retailer 17$2,009 USD
Retailer 4$2,578 USD
Retailer 16$2,990 USD
Rare Carat$3,075 USD

24 data points across 20 retailers

22 retailers$439 USD to $2,990 USD

A
Cheapest Retailer
-
$439 USD
A
Retailer 2
-
$490 USD
View
Final sale: no returns
A
Retailer 3
-
$491 USD
View
A
Retailer 4
-
$544 USD
View
A
Retailer 5
-
$544 USD
View
A
Retailer 6
-
$690 USD
View
A
Retailer 7
-
$855 USD
View
A
Retailer 8
-
$896 USD
£705 GBP
View
A
Retailer 9
-
$902 USD
€859 EUR
View
A
Retailer 10
-
$935 USD
ZAR 15,099 ZAR
View
A
Retailer 11
-
$1,122 USD
View
B+
Retailer 12
-
$1,314 USD
View
Retailer 13
-
$1,626 USD
View
Price last confirmed 45 days ago
B+
Retailer 14
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$1,748 USD
View
B+
Retailer 15
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$1,782 USD
View
B+
Retailer 16
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$1,878 USD
SGD 2,538 SGD
View
B+
Retailer 17
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$1,892 USD
View
B+
Retailer 18
-
$2,009 USD
£1,582 GBP
View
B
Retailer 19
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$2,578 USD
View
Retailer 20
-
$2,925 USD
View
Price last confirmed 14 days ago
B
Retailer 21
-
$2,990 USD
View
Most Expensive
Rare Carat
PD-227831 · Oct 18
$3,075 USD
View
Price last confirmed 14 days ago
21 more retailers have this diamond
Prices start from $439 USDSave up to $2,551 USD

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 Round
$439 USD