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Oval|Lab Grown|IGI

1.70ct E FL Oval Lab Grown Diamond

ID • E/FL • IGI LG816611171

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG816611171

Diamond specifications and retailer prices

From £305 GBP
$406 USD
As of October 28, 2026
Save £2,928 GBP (91%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £3,233 GBP at Rare Carat · As of October 28, 2026
View at Rare Carat

About this 1.7ct lab-grown oval diamond

This 1.7ct lab-grown oval 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 LG816611171 or 816611171. Listed at 18 retailers as of October 28, 2026, with prices from £305 to £3,233, a £2,928 spread on the same certified stone. Rare Carat lists it at £3,233. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816611171
Dimensions9.76 × 6.69 × 4.15 mm
L/W Ratio1.46
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
9.76 mm6.69 mm1.70 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816611171
Side View
Table 62.0%Crown 35.3°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 62.0%

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 28
Current: £3,233 GBP|Low: £305 GBP|High: £3,950 GBP|Avg: £985 GBP|-2.0%
Rare Carat
Retailer 2
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Retailer 10
Retailer 11
Retailer 12
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Retailer 18
October 29, 2026
Retailer 3£305 GBP
Retailer 8£326 GBP
Retailer 9£399 GBP
Retailer 10£405 GBP
Retailer 13£477 GBP
Retailer 15£571 GBP
Retailer 12£581 GBP
Retailer 2£608 GBP
Retailer 7£641 GBP
Retailer 4£773 GBP
Retailer 16£959 GBP
Retailer 5£1,118 GBP
Retailer 6£1,135 GBP
Retailer 18£1,177 GBP
Retailer 14£1,288 GBP
Retailer 11£1,329 GBP
Retailer 17£2,688 GBP
Rare Carat£3,233 GBP

37 data points across 18 retailers

18 retailers£305 GBP to £3,233 GBP

A
Cheapest Retailer
-
£305 GBP
$406 USD
Final sale: no returns
A
Retailer 2
-
£326 GBP
$434 USD
View
Price last confirmed 18 days ago
A
Retailer 3
-
£405 GBP
$539 USD
View
Price last confirmed 27 days ago
A
Retailer 4
-
£405 GBP
$539 USD
View
Price last confirmed 17 days ago
A
Retailer 5
-
£477 GBP
$635 USD
View
A
Retailer 6
-
£571 GBP
$760 USD
View
A
Retailer 7
-
£581 GBP
ZAR 12,508 ZAR
View
A
Retailer 8
-
£608 GBP
View
A
Retailer 9
-
£773 GBP
$1,029 USD
View
B+
Retailer 10
-
£959 GBP
$1,277 USD
View
B+
Retailer 11
-
£1,118 GBP
$1,489 USD
View
B+
Retailer 12
-
£1,135 GBP
$1,511 USD
View
B+
Retailer 13
-
£1,177 GBP
$1,568 USD
View
B+
Retailer 14
-
£1,288 GBP
$1,715 USD
View
B+
Retailer 15
-
£1,301 GBP
$1,732 USD
View
Price last confirmed 22 days ago
B+
Retailer 16
-
£1,329 GBP
View
B
Retailer 17
-
£2,688 GBP
$3,580 USD
View
Most Expensive
B
Rare Carat
C451-27A · Oct 28
£3,233 GBP
$4,305 USD
View
17 more retailers have this diamond
Prices start from £305 GBPSave up to £2,928 GBP

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 Oval
£305 GBP