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Oval|Lab Grown|IGI

1.68ct D FL Oval Lab Grown Diamond

ID • D/FL • IGI LG818681511

Certificate IGI LG818681511

Diamond specifications and retailer prices

From $650 USD
Save $5,440 USD (89%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $6,090 USD at Brilliant Earth
View at Brilliant Earth

About this 1.68ct lab-grown oval diamond

This 1.68ct lab-grown oval sits in the one-and-a-half to two carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818681511 or 818681511. Listed at 10 retailers, with prices from $650 to $6,090 at Brilliant Earth, a $5,440 spread on the same certified stone. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.68
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818681511
Dimensions9.33 × 6.60 × 4.25 mm
L/W Ratio1.41
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
9.33 mm6.60 mm1.68 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818681511
Side View
Table 59.0%Crown 35.6°Girdle: STK-THKPavilion 41.1°Culet: NoneDepth 64.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0-100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 2
Current: $6,090 USD|Low: $650 USD|High: $6,650 USD|Avg: $2,424 USD|-8.4%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 1, 2026
Retailer 9$650 USD
Retailer 8$778 USD
Retailer 2$874 USD
Retailer 6$1,285 USD
Retailer 7$1,337 USD
Retailer 3$1,925 USD
Retailer 5$2,225 USD
Retailer 10$2,468 USD
Retailer 4$4,415 USD
Brilliant Earth$6,090 USD

18 data points across 10 retailers

10 retailers$650 USD to $6,090 USD

B+
Cheapest Retailer
-
$650 USD
B+
Retailer 2
-
$778 USD
View
B
Retailer 3
-
$874 USD
€832 EUR
View
B
Retailer 4
-
$1,285 USD
View
B
Retailer 5
-
$1,337 USD
View
C
Retailer 6
-
$1,925 USD
£1,516 GBP
View
C
Retailer 7
-
$2,225 USD
View
C
Retailer 8
-
$2,518 USD
View
C
Retailer 9
-
$4,415 USD
View
Most Expensive
D
Brilliant Earth
20991603A · Oct 1
$6,090 USD
View
9 more retailers have this diamond
Prices start from $650 USDSave up to $5,440 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.

B+
1.68ct Oval
$650 USD